From f718fa23331ada21a3dc3094ef6d76ac8de1d84d Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sdsang@taosdata.com>
Date: Tue, 9 Jun 2020 15:17:16 +0800
Subject: [PATCH 1/4] 6mb => 8mb

---
 src/inc/taosdef.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/inc/taosdef.h b/src/inc/taosdef.h
index c75fc70d75..88156d1b71 100644
--- a/src/inc/taosdef.h
+++ b/src/inc/taosdef.h
@@ -206,7 +206,7 @@ void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
 #define TSDB_MAX_SAVED_SQL_LEN    TSDB_MAX_COLUMNS * 64
 #define TSDB_MAX_SQL_LEN          TSDB_PAYLOAD_SIZE
 #define TSDB_MAX_SQL_SHOW_LEN     256
-#define TSDB_MAX_ALLOWED_SQL_LEN  (8*1024*1024U)          // sql length should be less than 6mb
+#define TSDB_MAX_ALLOWED_SQL_LEN  (8*1024*1024U)          // sql length should be less than 8mb
 
 #define TSDB_MAX_BYTES_PER_ROW    TSDB_MAX_COLUMNS * 64
 #define TSDB_MAX_TAGS_LEN         65536

From b4c35d860ab93eb80d96ae2ddf9d19c8dc0c3b43 Mon Sep 17 00:00:00 2001
From: Hui Li <huili@taosdata.com>
Date: Wed, 10 Jun 2020 09:32:25 +0800
Subject: [PATCH 2/4] [add cluster sim cases]

---
 .../dn3_mn1_replica_change_dropDnod.sim       | 137 +++++++++
 .../dn3_mn1_vnode_corruptFile_offline.sim     | 226 +++++++++++++++
 .../dn3_mn1_vnode_corruptFile_online.sim      | 154 ++++++++++
 .../arbitrator/dn3_mn1_vnode_delDir.sim       | 273 ++++++++++++++++++
 .../offline_replica2_alterTable_online.sim    | 205 +++++++++++++
 .../offline_replica2_createTable_online.sim   | 217 ++++++++++++++
 .../offline_replica2_dropDb_online.sim        | 169 +++++++++++
 .../offline_replica2_dropTable_online.sim     | 203 +++++++++++++
 .../offline_replica3_alterTable_online.sim    | 205 +++++++++++++
 .../offline_replica3_createTable_online.sim   | 217 ++++++++++++++
 .../offline_replica3_dropDb_online.sim        | 169 +++++++++++
 .../offline_replica3_dropTable_online.sim     | 203 +++++++++++++
 .../sync_replica2_alterTable_add.sim          | 193 +++++++++++++
 .../sync_replica2_alterTable_drop.sim         | 193 +++++++++++++
 .../sync_replica3_alterTable_add.sim          | 193 +++++++++++++
 .../sync_replica3_alterTable_drop.sim         | 193 +++++++++++++
 ...sync_replica_alterTable_background_add.sim |  25 ++
 ...ync_replica_alterTable_background_drop.sim |  25 ++
 18 files changed, 3200 insertions(+)
 create mode 100644 tests/script/unique/arbitrator/dn3_mn1_replica_change_dropDnod.sim
 create mode 100644 tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_offline.sim
 create mode 100644 tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_online.sim
 create mode 100644 tests/script/unique/arbitrator/dn3_mn1_vnode_delDir.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica2_alterTable_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica2_createTable_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica2_dropDb_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica2_dropTable_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica3_alterTable_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica3_createTable_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica3_dropDb_online.sim
 create mode 100644 tests/script/unique/arbitrator/offline_replica3_dropTable_online.sim
 create mode 100644 tests/script/unique/arbitrator/sync_replica2_alterTable_add.sim
 create mode 100644 tests/script/unique/arbitrator/sync_replica2_alterTable_drop.sim
 create mode 100644 tests/script/unique/arbitrator/sync_replica3_alterTable_add.sim
 create mode 100644 tests/script/unique/arbitrator/sync_replica3_alterTable_drop.sim
 create mode 100644 tests/script/unique/arbitrator/sync_replica_alterTable_background_add.sim
 create mode 100644 tests/script/unique/arbitrator/sync_replica_alterTable_background_drop.sim

diff --git a/tests/script/unique/arbitrator/dn3_mn1_replica_change_dropDnod.sim b/tests/script/unique/arbitrator/dn3_mn1_replica_change_dropDnod.sim
new file mode 100644
index 0000000000..a7aaf018f1
--- /dev/null
+++ b/tests/script/unique/arbitrator/dn3_mn1_replica_change_dropDnod.sim
@@ -0,0 +1,137 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode5 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 2, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 10000
+$sleepTimer = 10000
+
+$db = db
+sql create database $db replica 2 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 100
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+sleep 1000
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: drop dnode4, then check rows
+#system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sql drop dnode $hostname4
+sleep $sleepTimer
+
+wait_dnode4_dropped:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_dropped
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode2Status != ready then
+  sleep 2000
+  goto wait_dnode4_dropped
+endi
+if $dnode3Status != ready then
+  sleep 2000
+  goto wait_dnode4_dropped
+endi
+
+sql reset query cache
+sql select count(*) from $stb
+sleep 1000
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print      drop dnode $hostname3, return error: not drop dnode for repica is 2, need 2 dnodes.
+sql_error drop dnode $hostname3
diff --git a/tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_offline.sim b/tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_offline.sim
new file mode 100644
index 0000000000..9f6486cfcb
--- /dev/null
+++ b/tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_offline.sim
@@ -0,0 +1,226 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode5 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3 and add into cluster , then create database with replica 2, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+#system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+#sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 100
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+sleep 1000
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode3, then corrupt vnode data file in dnode3
+system sh/exec.sh -n dnode3 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode3_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode3_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode3Status != offline then
+  sleep 2000
+  goto wait_dnode3_offline_0
+endi
+
+wait_dnode3_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode3_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode3Vtatus = $data4_2
+$dnode2Vtatus = $data7_2
+
+if $dnode3Vtatus != offline then
+  sleep 2000
+  goto wait_dnode3_vgroup_offline
+endi
+if $dnode2Vtatus != master then
+  sleep 2000
+  goto wait_dnode3_vgroup_offline
+endi
+
+# del the second row
+system sed '2d' ../../../sim/dnode3/data/vnode/vnode2/tsdb/data/v1849.data
+sleep 1000
+
+print ============== step4: restart dnode3, and run query 
+system sh/exec.sh -n dnode3 -s start
+sleep $sleepTimer
+wait_dnode3_reready:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode3_reready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode3Status != ready then
+  sleep 2000
+  goto wait_dnode4_reready
+endi
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: stop dnode2, and check if dnode3 sync success
+system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode2_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode2_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode2Status != offline then
+  sleep 2000
+  goto wait_dnode2_offline_0
+endi
+
+wait_dnode3_vgroup_master:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode3_vgroup_master
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode2Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode2Vtatus != offline then
+  sleep 2000
+  goto wait_dnode3_vgroup_master
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode3_vgroup_master
+endi
diff --git a/tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_online.sim b/tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_online.sim
new file mode 100644
index 0000000000..b3b71ccf51
--- /dev/null
+++ b/tests/script/unique/arbitrator/dn3_mn1_vnode_corruptFile_online.sim
@@ -0,0 +1,154 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode5 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3 and add into cluster , then create database with replica 2, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+#system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+#sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 100
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+sleep 1000
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: corrupt vnode data file in dnode3, not stop dnode3
+# del the second row
+system sed '2d' ../../../sim/dnode3/data/vnode/vnode2/tsdb/data/v1849.data
+sleep 1000
+
+print ============== step4: run query 
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: stop dnode2, and check if dnode3 sync success
+system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode2_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode2_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode2Status != offline then
+  sleep 2000
+  goto wait_dnode2_offline_0
+endi
+
+wait_dnode3_vgroup_master:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode3_vgroup_master
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode2Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode2Vtatus != offline then
+  sleep 2000
+  goto wait_dnode3_vgroup_master
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode3_vgroup_master
+endi
diff --git a/tests/script/unique/arbitrator/dn3_mn1_vnode_delDir.sim b/tests/script/unique/arbitrator/dn3_mn1_vnode_delDir.sim
new file mode 100644
index 0000000000..46b4023aa2
--- /dev/null
+++ b/tests/script/unique/arbitrator/dn3_mn1_vnode_delDir.sim
@@ -0,0 +1,273 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode5 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 2, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 100
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+sleep 1000
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4, and remove its vnodeX subdirector 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+
+system rm -rf ../../../sim/dnode4/data/vnode/*
+sleep 1000
+
+print ============== step4: restart dnode4, waiting sync end 
+system sh/exec.sh -n dnode4 -s start
+sleep $sleepTimer
+wait_dnode4_reready:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_reready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_reready
+endi
+
+wait_dnode4_vgroup_slave:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_slave
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+print dnode4Vtatus: $dnode4Vtatus
+print dnode3Vtatus: $dnode3Vtatus 
+if $dnode4Vtatus != slave then
+  sleep 2000
+  goto wait_dnode4_vgroup_slave
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_slave
+endi
+
+print ============== step5: stop dnode3/dnode2, and check rows
+system sh/exec.sh -n dnode2 -s stop
+system sh/exec.sh -n dnode3 -s stop
+sleep $sleepTimer
+
+wait_dnode23_offline:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode23_offline
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode2Status != offline then
+  sleep 2000
+  goto wait_dnode23_offline
+endi
+if $dnode3Status != offline then
+  sleep 2000
+  goto wait_dnode23_offline
+endi
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode23_offline
+endi
+
+wait_dnode4_vgroup_master:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_master
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+print dnode4Vtatus: $dnode4Vtatus
+print dnode3Vtatus: $dnode3Vtatus 
+if $dnode4Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_master
+endi
+if $dnode3Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_master
+endi
+
+# check using select
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+sql insert into $tb values ( now , 20000 ) ( now + 1a, 20001 ) ( now + 2a, 20002 )
+$totalRows = $totalRows + 3
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
diff --git a/tests/script/unique/arbitrator/offline_replica2_alterTable_online.sim b/tests/script/unique/arbitrator/offline_replica2_alterTable_online.sim
new file mode 100644
index 0000000000..990c77b050
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica2_alterTable_online.sim
@@ -0,0 +1,205 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+#system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+#sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: alter table and insert more data rows
+sql alter table $stb drop column c1
+sql alter table $stb add column f1 double
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql inset into $tb values (now, 10001) (now + 1s, 10002) (now + 2s, 10003) (now + 3s, 10004)
+  $i = $i + 1
+endw 
+$addRows = 4 * $tblNum
+$totalRows = $totalRows + $addRows
+
+print ============== step5: restart dnode4, waiting dnode4 synced
+system sh/exec.sh -n dnode4 -s start
+
+wait_dnode4_ready:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+#$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+
+print ============== step6: check result
+
+sql reset query cache
+
+$cnt = 0
+wait_table_dropped:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00 totalRows: $totalRows
+	sleep 2000
+	goto wait_table_dropped
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica2_createTable_online.sim b/tests/script/unique/arbitrator/offline_replica2_createTable_online.sim
new file mode 100644
index 0000000000..eb76908ac9
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica2_createTable_online.sim
@@ -0,0 +1,217 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+#system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+#sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: create more tables and insert data rows
+$tsStart = $tsEnd + 1000
+$i = $tblNum
+$tblNum = $tblNum * 2
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+  
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: restart dnode4, waiting dnode4 synced
+system sh/exec.sh -n dnode4 -s start
+
+wait_dnode4_ready:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+#$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+
+print ============== step6: check result
+
+sql reset query cache
+
+$cnt = 0
+wait_table_altered:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00
+	sleep 2000
+	goto wait_table_altered
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica2_dropDb_online.sim b/tests/script/unique/arbitrator/offline_replica2_dropDb_online.sim
new file mode 100644
index 0000000000..f4af4f4c9d
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica2_dropDb_online.sim
@@ -0,0 +1,169 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 2, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+#system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+#sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 2 maxTables $totalTableNum
+sql create database $db replica 2 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: drop db
+sql drop database $db
+
+print ============== step5: restart dnode4 
+system sh/exec.sh -n dnode4 -s start
+
+print ============== step6: check result
+sql reset query cache
+$cnt = 0
+wait_database_dropped:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql show databases
+if $rows != 0 then
+	sleep 2000
+	goto wait_database_dropped
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica2_dropTable_online.sim b/tests/script/unique/arbitrator/offline_replica2_dropTable_online.sim
new file mode 100644
index 0000000000..56e468bf1a
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica2_dropTable_online.sim
@@ -0,0 +1,203 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+#system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+#sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: drop some tables
+$i = 1
+$dropTblNum = 21
+
+while $i < $dropTblNum
+  $tb = tb . $i
+  sql drop table if exists $tb
+  $i = $i + 1
+endw 
+$tblNum = $tblNum - 20
+
+print ============== step5: restart dnode4, waiting dnode4 synced
+system sh/exec.sh -n dnode4 -s start
+
+wait_dnode4_ready:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+#$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+
+print ============== step6: check result
+
+sql reset query cache
+
+$cnt = 0
+wait_table_dropped:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(tbname) from $stb
+if $data00 != $tblNum then
+  print data00: $data00 tblNum: $tblNum
+	sleep 2000
+	goto wait_table_dropped
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica3_alterTable_online.sim b/tests/script/unique/arbitrator/offline_replica3_alterTable_online.sim
new file mode 100644
index 0000000000..24deed212d
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica3_alterTable_online.sim
@@ -0,0 +1,205 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: alter table and insert more data rows
+sql alter table $stb drop column c1
+sql alter table $stb add column f1 double
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql inset into $tb values (now, 10001) (now + 1s, 10002) (now + 2s, 10003) (now + 3s, 10004)
+  $i = $i + 1
+endw 
+$addRows = 4 * $tblNum
+$totalRows = $totalRows + $addRows
+
+print ============== step5: restart dnode4, waiting dnode4 synced
+system sh/exec.sh -n dnode4 -s start
+
+wait_dnode4_ready:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+#$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+
+print ============== step6: check result
+
+sql reset query cache
+
+$cnt = 0
+wait_table_dropped:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00 totalRows: $totalRows
+	sleep 2000
+	goto wait_table_dropped
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica3_createTable_online.sim b/tests/script/unique/arbitrator/offline_replica3_createTable_online.sim
new file mode 100644
index 0000000000..f395d57211
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica3_createTable_online.sim
@@ -0,0 +1,217 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: create more tables and insert data rows
+$tsStart = $tsEnd + 1000
+$i = $tblNum
+$tblNum = $tblNum * 2
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+  
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: restart dnode4, waiting dnode4 synced
+system sh/exec.sh -n dnode4 -s start
+
+wait_dnode4_ready:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+#$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+
+print ============== step6: check result
+
+sql reset query cache
+
+$cnt = 0
+wait_table_altered:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00
+	sleep 2000
+	goto wait_table_altered
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica3_dropDb_online.sim b/tests/script/unique/arbitrator/offline_replica3_dropDb_online.sim
new file mode 100644
index 0000000000..0c7211d9e5
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica3_dropDb_online.sim
@@ -0,0 +1,169 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: drop db
+sql drop database $db
+
+print ============== step5: restart dnode4 
+system sh/exec.sh -n dnode4 -s start
+
+print ============== step6: check result
+sql reset query cache
+$cnt = 0
+wait_database_dropped:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql show databases
+if $rows != 0 then
+	sleep 2000
+	goto wait_database_dropped
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/offline_replica3_dropTable_online.sim b/tests/script/unique/arbitrator/offline_replica3_dropTable_online.sim
new file mode 100644
index 0000000000..8e59acc234
--- /dev/null
+++ b/tests/script/unique/arbitrator/offline_replica3_dropTable_online.sim
@@ -0,0 +1,203 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: drop some tables
+$i = 1
+$dropTblNum = 21
+
+while $i < $dropTblNum
+  $tb = tb . $i
+  sql drop table if exists $tb
+  $i = $i + 1
+endw 
+$tblNum = $tblNum - 20
+
+print ============== step5: restart dnode4, waiting dnode4 synced
+system sh/exec.sh -n dnode4 -s start
+
+wait_dnode4_ready:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+#$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != ready then
+  sleep 2000
+  goto wait_dnode4_ready
+endi
+
+print ============== step6: check result
+
+sql reset query cache
+
+$cnt = 0
+wait_table_dropped:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(tbname) from $stb
+if $data00 != $tblNum then
+  print data00: $data00 tblNum: $tblNum
+	sleep 2000
+	goto wait_table_dropped
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/sync_replica2_alterTable_add.sim b/tests/script/unique/arbitrator/sync_replica2_alterTable_add.sim
new file mode 100644
index 0000000000..06747ed589
--- /dev/null
+++ b/tests/script/unique/arbitrator/sync_replica2_alterTable_add.sim
@@ -0,0 +1,193 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+#system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+#sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: insert more data rows
+$tsStart = $tsEnd + 1000
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: restart dnode4, while alter table and insert data in other thead when dnode4 is syncing
+system sh/exec.sh -n dnode4 -s start
+run_back unique/arbitrator/sync_replica_alterTable_background_add.sim
+
+print ============== step6: check result
+#in background.sim, add one column and insert 200 rows
+$totalRows = $totalRows + 200
+
+$cnt = 0
+wait_table_altered:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00
+	sleep 2000
+	goto wait_table_altered
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/sync_replica2_alterTable_drop.sim b/tests/script/unique/arbitrator/sync_replica2_alterTable_drop.sim
new file mode 100644
index 0000000000..ecd8208281
--- /dev/null
+++ b/tests/script/unique/arbitrator/sync_replica2_alterTable_drop.sim
@@ -0,0 +1,193 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+#system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+#sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 3 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: insert more data rows
+$tsStart = $tsEnd + 1000
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: restart dnode4, while alter table and insert data in other thead when dnode4 is syncing
+system sh/exec.sh -n dnode4 -s start
+run_back unique/arbitrator/sync_replica_alterTable_background_drop.sim
+
+print ============== step6: check result
+#in background.sim, drop one column and add one new column, then insert 200 rows
+$totalRows = $totalRows + 200
+
+$cnt = 0
+wait_table_altered:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00
+	sleep 2000
+	goto wait_table_altered
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/sync_replica3_alterTable_add.sim b/tests/script/unique/arbitrator/sync_replica3_alterTable_add.sim
new file mode 100644
index 0000000000..d9dcea2b22
--- /dev/null
+++ b/tests/script/unique/arbitrator/sync_replica3_alterTable_add.sim
@@ -0,0 +1,193 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: insert more data rows
+$tsStart = $tsEnd + 1000
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: restart dnode4, while alter table and insert data in other thead when dnode4 is syncing
+system sh/exec.sh -n dnode4 -s start
+run_back unique/arbitrator/sync_replica_alterTable_background_add.sim
+
+print ============== step6: check result
+#in background.sim, add one column and insert 200 rows
+$totalRows = $totalRows + 200
+
+$cnt = 0
+wait_table_altered:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00 totalRows: $totalRows
+	sleep 2000
+	goto wait_table_altered
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/sync_replica3_alterTable_drop.sim b/tests/script/unique/arbitrator/sync_replica3_alterTable_drop.sim
new file mode 100644
index 0000000000..2c0a9f8747
--- /dev/null
+++ b/tests/script/unique/arbitrator/sync_replica3_alterTable_drop.sim
@@ -0,0 +1,193 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+system sh/deploy.sh -n dnode2 -i 2
+system sh/deploy.sh -n dnode3 -i 3
+system sh/deploy.sh -n dnode4 -i 4
+
+system sh/cfg.sh -n dnode1 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode2 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode3 -c numOfMnodes -v 1
+system sh/cfg.sh -n dnode4 -c numOfMnodes -v 1
+
+system sh/cfg.sh -n dnode1 -c walLevel -v 2
+system sh/cfg.sh -n dnode2 -c walLevel -v 2
+system sh/cfg.sh -n dnode3 -c walLevel -v 2
+system sh/cfg.sh -n dnode4 -c walLevel -v 2
+
+system sh/cfg.sh -n dnode1 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode2 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode3 -c balanceInterval -v 10
+system sh/cfg.sh -n dnode4 -c balanceInterval -v 10
+
+system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode2 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode3 -c numOfTotalVnodes -v 4
+system sh/cfg.sh -n dnode4 -c numOfTotalVnodes -v 4
+
+system sh/cfg.sh -n dnode1 -c alternativeRole -v 1
+system sh/cfg.sh -n dnode2 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode3 -c alternativeRole -v 2
+system sh/cfg.sh -n dnode4 -c alternativeRole -v 2
+
+system sh/cfg.sh -n dnode1 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode2 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode3 -c maxtablesPerVnode -v 4
+system sh/cfg.sh -n dnode4 -c maxtablesPerVnode -v 4
+
+system sh/cfg.sh -n dnode1 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode2 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode3 -c arbitrator -v $arbitrator
+system sh/cfg.sh -n dnode4 -c arbitrator -v $arbitrator
+
+print ============== step0: start tarbitrator
+system sh/exec_tarbitrator.sh -s start
+
+print ============== step1: start dnode1, only deploy mnode
+system sh/exec.sh -n dnode1 -s start
+sleep 3000
+sql connect
+
+print ============== step2: start dnode2/dnode3/dnode4 and add into cluster , then create database with replica 3, and create table, insert data
+system sh/exec.sh -n dnode2 -s start
+system sh/exec.sh -n dnode3 -s start
+system sh/exec.sh -n dnode4 -s start
+sql create dnode $hostname2
+sql create dnode $hostname3
+sql create dnode $hostname4
+sleep 3000
+
+$totalTableNum = 100
+$sleepTimer = 3000
+
+$db = db
+print create database $db replica 3 maxTables $totalTableNum
+sql create database $db replica 3 maxTables $totalTableNum
+sql use $db
+
+# create table , insert data
+$stb = stb
+sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+$rowNum = 500
+$tblNum = $totalTableNum
+$totalRows = 0
+$tsStart = 1420041600000
+$tsEnd = 0
+
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+  sql create table $tb using $stb tags( $i )
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+$tsEnd = $tsStart + $totalRows / $tblNum
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step3: stop dnode4 
+system sh/exec.sh -n dnode4 -s stop -x SIGINT
+sleep $sleepTimer
+wait_dnode4_offline_0:
+sql show dnodes
+if $rows != 4 then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3
+#print $data0_4  $data1_4  $data2_4  $data3_4  $data4_4
+#print $data0_5  $data1_5  $data2_5  $data3_5  $data4_5
+#print $data0_6  $data1_6  $data2_6  $data3_6  $data4_6
+#$dnode1Status = $data4_1  
+$dnode2Status = $data4_2
+$dnode3Status = $data4_3  
+$dnode4Status = $data4_4 
+#$dnode5Status = $data4_5
+
+if $dnode4Status != offline then
+  sleep 2000
+  goto wait_dnode4_offline_0
+endi
+
+wait_dnode4_vgroup_offline:
+sql show vgroups
+if $rows != 1 then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+print show vgroups:
+print $data0_1  $data1_1  $data2_1  $data3_1  $data4_1  $data5_1  $data6_1  $data7_1  $data8_1  $data9_1
+print $data0_2  $data1_2  $data2_2  $data3_2  $data4_2  $data5_2  $data6_2  $data7_2  $data8_2  $data9_2
+print $data0_3  $data1_3  $data2_3  $data3_3  $data4_3  $data5_3  $data6_3  $data7_3  $data8_3  $data9_3
+$dnode4Vtatus = $data4_2
+$dnode3Vtatus = $data7_2
+
+if $dnode4Vtatus != offline then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+if $dnode3Vtatus != master then
+  sleep 2000
+  goto wait_dnode4_vgroup_offline
+endi
+
+print ============== step4: insert more data rows
+$tsStart = $tsEnd + 1000
+$i = 0
+while $i < $tblNum
+  $tb = tb . $i
+ 
+  $x = 0
+  while $x < $rowNum
+    $ts = $tsStart + $x
+    sql insert into $tb values ( $ts + 0a , $x ) ( $ts + 1a , $x ) ( $ts + 2a , $x ) ( $ts + 3a , $x ) ( $ts + 4a , $x ) ( $ts + 5a , $x ) ( $ts + 6a , $x ) ( $ts + 7a , $x ) ( $ts + 8a , $x ) ( $ts + 9a , $x ) ( $ts + 10a , $x ) ( $ts + 11a , $x ) ( $ts + 12a , $x ) ( $ts + 13a , $x ) ( $ts + 14a , $x ) ( $ts + 15a , $x ) ( $ts + 16a , $x ) ( $ts + 17a , $x ) ( $ts + 18a , $x ) ( $ts + 19a , $x ) ( $ts + 20a , $x ) ( $ts + 21a , $x ) ( $ts + 22a , $x ) ( $ts + 23a , $x ) ( $ts + 24a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 25a , $x ) ( $ts + 26a , $x ) ( $ts + 27a , $x ) ( $ts + 28a , $x ) ( $ts + 29a , $x ) ( $ts + 30a , $x ) ( $ts + 31a , $x ) ( $ts + 32a , $x ) ( $ts + 33a , $x ) ( $ts + 34a , $x ) ( $ts + 35a , $x ) ( $ts + 36a , $x ) ( $ts + 37a , $x ) ( $ts + 38a , $x ) ( $ts + 39a , $x ) ( $ts + 40a , $x ) ( $ts + 41a , $x ) ( $ts + 42a , $x ) ( $ts + 43a , $x ) ( $ts + 44a , $x ) ( $ts + 45a , $x ) ( $ts + 46a , $x ) ( $ts + 47a , $x ) ( $ts + 48a , $x ) ( $ts + 49a , $x ) ( $ts + 50a , $x ) ( $ts + 51a , $x ) ( $ts + 52a , $x ) ( $ts + 53a , $x ) ( $ts + 54a , $x ) ( $ts + 55a , $x ) ( $ts + 56a , $x ) ( $ts + 57a , $x ) ( $ts + 58a , $x ) ( $ts + 59a , $x ) 
+    $x = $x + 60
+  endw 
+  $totalRows = $totalRows + $x
+  print       info: inserted $x rows into $tb and totalRows: $totalRows
+  $i = $i + 1
+endw 
+
+sql select count(*) from $stb
+print data00 $data00
+if $data00 != $totalRows then
+	return -1
+endi
+
+print ============== step5: restart dnode4, while alter table and insert data in other thead when dnode4 is syncing
+system sh/exec.sh -n dnode4 -s start
+run_back unique/arbitrator/sync_replica_alterTable_background_drop.sim
+
+print ============== step6: check result
+#in background.sim, drop one column and add one new column, then insert 200 rows
+$totalRows = $totalRows + 200
+
+$cnt = 0
+wait_table_altered:
+$cnt = $cnt + 1
+if $cnt == 20 then
+  return -1
+endi
+sql select count(*) from $stb
+if $data00 != $totalRows then
+  print data00: $data00
+	sleep 2000
+	goto wait_table_altered
+endi
+
+
+
+
diff --git a/tests/script/unique/arbitrator/sync_replica_alterTable_background_add.sim b/tests/script/unique/arbitrator/sync_replica_alterTable_background_add.sim
new file mode 100644
index 0000000000..c5f9157e26
--- /dev/null
+++ b/tests/script/unique/arbitrator/sync_replica_alterTable_background_add.sim
@@ -0,0 +1,25 @@
+sql connect
+
+$db = db
+$stb = stb
+print =============== sync_replica_alterTable_background_add.sim step0: alter table and insert data
+$totalTableNum = 100
+
+sql use $db
+
+#sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+print alter table $stb add column f1 float
+sql alter table $stb add column f1 float
+
+$tblNum = $totalTableNum
+$alterTblNum = 51
+
+$i = 1
+while $i < $alterTblNum
+  $tb = tb . $i
+  sql insert into $tb values (now, 10001, 10001) (now + 1s, 10002, 10002) (now + 2s, 10003, 10003) (now + 3s, 10004, 10004)
+  $i = $i + 1
+endw 
+
+
+
diff --git a/tests/script/unique/arbitrator/sync_replica_alterTable_background_drop.sim b/tests/script/unique/arbitrator/sync_replica_alterTable_background_drop.sim
new file mode 100644
index 0000000000..5540eb96df
--- /dev/null
+++ b/tests/script/unique/arbitrator/sync_replica_alterTable_background_drop.sim
@@ -0,0 +1,25 @@
+sql connect
+
+$db = db
+$stb = stb
+print =============== sync_replica_alterTable_background_drop.sim step0: alter table and insert data
+$totalTableNum = 100
+
+sql use $db
+
+#sql create table $stb (ts timestamp, c1 int) tags(t1 int)
+sql alter table $stb drop column c1
+sql alter table $stb add column f1 double
+
+$tblNum = $totalTableNum
+$alterTblNum = 51
+
+$i = 1
+while $i < $alterTblNum
+  $tb = tb . $i
+  sql insert into $tb values (now, 10001) (now + 1s, 10002) (now + 2s, 10003) (now + 3s, 10004)
+  $i = $i + 1
+endw 
+
+
+

From b0810ef3913cb13fb704ada4ac93ea11fd3fab21 Mon Sep 17 00:00:00 2001
From: Shuduo Sang <sdsang@taosdata.com>
Date: Wed, 10 Jun 2020 10:17:44 +0800
Subject: [PATCH 3/4] make test-all.sh flexible to manually execute.

---
 tests/test-all.sh | 93 ++++++++++++++++++++++++++---------------------
 1 file changed, 51 insertions(+), 42 deletions(-)

diff --git a/tests/test-all.sh b/tests/test-all.sh
index cee638e03c..485c852dc5 100755
--- a/tests/test-all.sh
+++ b/tests/test-all.sh
@@ -24,65 +24,74 @@ GREEN_DARK='\033[0;32m'
 GREEN_UNDERLINE='\033[4;32m'
 NC='\033[0m'
 
-echo "### run TSIM test case ###"
-cd script
+totalFailed=0
+totalPyFailed=0
 
-[ -f out.log ] && rm -f out.log
 
-if [ "$1" == "cron" ]; then
-  echo "### run TSIM regression test ###"
-  runSimCaseOneByOne regressionSuite.sim
-elif [ "$1" == "full" ]; then
-  echo "### run TSIM full test ###"
-  runSimCaseOneByOne fullGeneralSuite.sim
-else
-  echo "### run TSIM smoke test ###"
-  runSimCaseOneByOne basicSuite.sim
-fi
+current_dir=`pwd`
 
-totalSuccess=`grep 'success' out.log | wc -l`
-totalBasic=`grep success out.log | grep Suite | wc -l`
+if [ "$2" != "python" ]; then
+  echo "### run TSIM test case ###"
+  cd $current_dir/script
 
-if [ "$totalSuccess" -gt "0" ]; then
-  totalSuccess=`expr $totalSuccess - $totalBasic`
-fi
+  [ -f out.log ] && rm -f out.log
+  if [ "$1" == "cron" ]; then
+    echo "### run TSIM regression test ###"
+    runSimCaseOneByOne regressionSuite.sim
+  elif [ "$1" == "full" ]; then
+    echo "### run TSIM full test ###"
+    runSimCaseOneByOne fullGeneralSuite.sim
+  else
+    echo "### run TSIM smoke test ###"
+    runSimCaseOneByOne basicSuite.sim
+  fi
 
-echo -e "${GREEN} ### Total $totalSuccess TSIM case(s) succeed! ### ${NC}"
+  totalSuccess=`grep 'success' out.log | wc -l`
+  totalBasic=`grep success out.log | grep Suite | wc -l`
 
-totalFailed=`grep 'failed\|fault' out.log | wc -l`
+  if [ "$totalSuccess" -gt "0" ]; then
+    totalSuccess=`expr $totalSuccess - $totalBasic`
+  fi
+
+  echo -e "${GREEN} ### Total $totalSuccess TSIM case(s) succeed! ### ${NC}"
+
+  totalFailed=`grep 'failed\|fault' out.log | wc -l`
 # echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
 
-if [ "$totalFailed" -ne "0" ]; then
-  echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
+  if [ "$totalFailed" -ne "0" ]; then
+    echo -e "${RED} ### Total $totalFailed TSIM case(s) failed! ### ${NC}"
 
 #  exit $totalFailed
+  fi
 fi
 
-echo "### run Python test case ###"
-cd ../pytest
+if [ "$2" != "sim" ]; then
+  echo "### run Python test case ###"
+  cd $current_dir/pytest
 
-[ -f pytest-out.log ] && rm -f pytest-out.log
+  [ -f pytest-out.log ] && rm -f pytest-out.log
 
-if [ "$1" == "cron" ]; then
-  echo "### run Python regression test ###"
-  runPyCaseOneByOne regressiontest.sh
-elif [ "$1" == "full" ]; then
-  echo "### run Python full test ###"
-  runPyCaseOneByOne fulltest.sh
-else
-  echo "### run Python smoke test ###"
-  runPyCaseOneByOne smoketest.sh
-fi
-totalPySuccess=`grep 'successfully executed' pytest-out.log | wc -l`
+  if [ "$1" == "cron" ]; then
+    echo "### run Python regression test ###"
+    runPyCaseOneByOne regressiontest.sh
+  elif [ "$1" == "full" ]; then
+    echo "### run Python full test ###"
+    runPyCaseOneByOne fulltest.sh
+  else
+    echo "### run Python smoke test ###"
+    runPyCaseOneByOne smoketest.sh
+  fi
+  totalPySuccess=`grep 'successfully executed' pytest-out.log | wc -l`
 
-if [ "$totalPySuccess" -gt "0" ]; then
-  echo -e "${GREEN} ### Total $totalPySuccess python case(s) succeed! ### ${NC}"
-fi
+  if [ "$totalPySuccess" -gt "0" ]; then
+    echo -e "${GREEN} ### Total $totalPySuccess python case(s) succeed! ### ${NC}"
+  fi
 
-totalPyFailed=`grep 'failed\|fault' pytest-out.log | wc -l`
-if [ "$totalPyFailed" -ne "0" ]; then
-  echo -e "${RED} ### Total $totalPyFailed python case(s) failed! ### ${NC}"
+  totalPyFailed=`grep 'failed\|fault' pytest-out.log | wc -l`
+  if [ "$totalPyFailed" -ne "0" ]; then
+    echo -e "${RED} ### Total $totalPyFailed python case(s) failed! ### ${NC}"
 #  exit $totalPyFailed
+  fi
 fi
 
 exit $(($totalFailed + $totalPyFailed))

From c3cc71c030b743f85f5e1e36c6d1318d1636e8f7 Mon Sep 17 00:00:00 2001
From: Shengliang Guan <slguan@taosdata.com>
Date: Wed, 10 Jun 2020 12:16:51 +0800
Subject: [PATCH 4/4] scripts

---
 tests/script/general/alter/cached_schema_after_alter.sim | 2 +-
 tests/script/general/alter/metrics.sim                   | 4 ++--
 tests/script/general/alter/table.sim                     | 4 ++--
 tests/script/general/cache/restart_metrics.sim           | 3 ++-
 tests/script/general/column/commit.sim                   | 4 ++--
 tests/script/general/column/metrics.sim                  | 4 ++--
 tests/script/general/column/table.sim                    | 4 ++--
 tests/script/general/compress/commitlog.sim              | 2 +-
 tests/script/general/compress/compress.sim               | 2 +-
 tests/script/general/compress/compress2.sim              | 2 +-
 tests/script/general/db/alter_tables_d2.sim              | 8 ++++----
 tests/script/general/db/alter_tables_v1.sim              | 8 ++++----
 tests/script/general/db/alter_tables_v4.sim              | 8 ++++----
 tests/script/general/db/alter_vgroups.sim                | 8 ++++----
 tests/script/general/db/backup/keep.sim                  | 8 ++++----
 tests/script/general/db/delete.sim                       | 2 +-
 tests/script/general/db/dropdnodes.sim                   | 5 +++--
 tests/script/general/import/replica1.sim                 | 4 ++--
 tests/script/general/insert/insert_drop.sim              | 4 ++--
 tests/script/general/parser/auto_create_tb.sim           | 2 +-
 tests/script/general/parser/commit.sim                   | 2 +-
 tests/script/general/parser/first_last.sim               | 2 +-
 tests/script/general/parser/interp.sim                   | 2 +-
 tests/script/general/parser/lastrow.sim                  | 2 +-
 tests/script/general/parser/limit.sim                    | 2 +-
 tests/script/general/parser/limit1.sim                   | 2 +-
 tests/script/general/parser/limit1_tblocks100.sim        | 2 +-
 tests/script/general/parser/limit2.sim                   | 2 +-
 tests/script/general/parser/select_from_cache_disk.sim   | 2 +-
 tests/script/general/parser/single_row_in_tb.sim         | 2 +-
 tests/script/general/parser/slimit.sim                   | 2 +-
 tests/script/general/parser/slimit1.sim                  | 2 +-
 tests/script/general/parser/slimit_alter_tags.sim        | 2 +-
 tests/script/general/parser/tbnameIn.sim                 | 2 +-
 tests/script/general/stable/disk.sim                     | 2 +-
 tests/script/general/stable/dnode3.sim                   | 9 +--------
 tests/script/general/tag/commit.sim                      | 2 +-
 tests/script/unique/big/balance.sim                      | 2 ++
 tests/script/unique/cluster/balance1.sim                 | 2 +-
 tests/script/unique/cluster/balance3.sim                 | 2 ++
 tests/script/unique/db/commit.sim                        | 4 ++--
 tests/script/unique/db/delete.sim                        | 2 +-
 tests/script/unique/db/replica_add13.sim                 | 6 +++---
 tests/script/unique/db/replica_reduce21.sim              | 2 +-
 tests/script/unique/dnode/balance2.sim                   | 2 ++
 tests/script/unique/dnode/balance3.sim                   | 3 ++-
 tests/script/unique/dnode/balancex.sim                   | 1 +
 tests/script/unique/dnode/remove1.sim                    | 1 +
 tests/script/unique/dnode/remove2.sim                    | 2 +-
 tests/script/unique/dnode/vnode_clean.sim                | 5 +++--
 tests/script/unique/mnode/mgmt22.sim                     | 2 +-
 tests/script/windows/alter/metrics.sim                   | 4 ++--
 tests/script/windows/alter/table.sim                     | 4 ++--
 53 files changed, 89 insertions(+), 84 deletions(-)

diff --git a/tests/script/general/alter/cached_schema_after_alter.sim b/tests/script/general/alter/cached_schema_after_alter.sim
index 921cfee3d1..d06856d5ff 100644
--- a/tests/script/general/alter/cached_schema_after_alter.sim
+++ b/tests/script/general/alter/cached_schema_after_alter.sim
@@ -53,7 +53,7 @@ endi
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/alter/metrics.sim b/tests/script/general/alter/metrics.sim
index b346b3b2c0..a2c5b7b465 100644
--- a/tests/script/general/alter/metrics.sim
+++ b/tests/script/general/alter/metrics.sim
@@ -375,9 +375,9 @@ endi
 print ======== step9
 print ======== step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql use d2
 sql describe tb
diff --git a/tests/script/general/alter/table.sim b/tests/script/general/alter/table.sim
index c6402b45f7..25d3b42066 100644
--- a/tests/script/general/alter/table.sim
+++ b/tests/script/general/alter/table.sim
@@ -326,9 +326,9 @@ endi
 print ======== step9
 print ======== step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql use d1
 sql describe tb
diff --git a/tests/script/general/cache/restart_metrics.sim b/tests/script/general/cache/restart_metrics.sim
index c85a66869a..376a491f26 100644
--- a/tests/script/general/cache/restart_metrics.sim
+++ b/tests/script/general/cache/restart_metrics.sim
@@ -57,7 +57,8 @@ system sh/exec.sh -n dnode1 -s start
 
 print =============== step3
 print ==> sleep 8 seconds to renew cache
-sleep 8000
+sql reset query cache
+sleep 1000
 
 print =============== step4
 sql create database $db
diff --git a/tests/script/general/column/commit.sim b/tests/script/general/column/commit.sim
index 035d28d3e5..c574db1aa9 100644
--- a/tests/script/general/column/commit.sim
+++ b/tests/script/general/column/commit.sim
@@ -89,9 +89,9 @@ endi
 
 print =============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 4000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 print =============== step5
 
diff --git a/tests/script/general/column/metrics.sim b/tests/script/general/column/metrics.sim
index 401a4ae54e..673b66c9e2 100644
--- a/tests/script/general/column/metrics.sim
+++ b/tests/script/general/column/metrics.sim
@@ -157,9 +157,9 @@ endi
 
 print =============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 2000
+sleep 5000
 
 print =============== step5
 
diff --git a/tests/script/general/column/table.sim b/tests/script/general/column/table.sim
index 8e9c44fc46..aec0dc3c75 100644
--- a/tests/script/general/column/table.sim
+++ b/tests/script/general/column/table.sim
@@ -129,9 +129,9 @@ endi
 
 print =============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 2000
+sleep 5000
 
 print ==============  step5
 
diff --git a/tests/script/general/compress/commitlog.sim b/tests/script/general/compress/commitlog.sim
index 7c167db3f3..b5d653fe83 100644
--- a/tests/script/general/compress/commitlog.sim
+++ b/tests/script/general/compress/commitlog.sim
@@ -89,7 +89,7 @@ print =============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 print =============== step5
 
diff --git a/tests/script/general/compress/compress.sim b/tests/script/general/compress/compress.sim
index 93fdcbaafa..6975f87996 100644
--- a/tests/script/general/compress/compress.sim
+++ b/tests/script/general/compress/compress.sim
@@ -84,7 +84,7 @@ print =============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 print =============== step5
 
diff --git a/tests/script/general/compress/compress2.sim b/tests/script/general/compress/compress2.sim
index 0eb58bd94b..cf96f572ac 100644
--- a/tests/script/general/compress/compress2.sim
+++ b/tests/script/general/compress/compress2.sim
@@ -84,7 +84,7 @@ print =============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 print =============== step5
 
diff --git a/tests/script/general/db/alter_tables_d2.sim b/tests/script/general/db/alter_tables_d2.sim
index 1fd24f9cec..bf950a5e49 100644
--- a/tests/script/general/db/alter_tables_d2.sim
+++ b/tests/script/general/db/alter_tables_d2.sim
@@ -211,10 +211,10 @@ endi
 print ============================ step7
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 system sh/exec.sh -n dnode2 -s start
-sleep 3000
+sleep 5000
 
 sql reset query cache
 sleep 1000
@@ -334,10 +334,10 @@ endi
 print ============================ step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 system sh/exec.sh -n dnode2 -s start
-sleep 3000
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/general/db/alter_tables_v1.sim b/tests/script/general/db/alter_tables_v1.sim
index 17aa746ce3..ccddb8f959 100644
--- a/tests/script/general/db/alter_tables_v1.sim
+++ b/tests/script/general/db/alter_tables_v1.sim
@@ -143,9 +143,9 @@ endi
 
 print ============================ step7
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql reset query cache
 sleep 1000
@@ -245,9 +245,9 @@ endi
 
 print ============================ step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/general/db/alter_tables_v4.sim b/tests/script/general/db/alter_tables_v4.sim
index db00219ed0..75687b417e 100644
--- a/tests/script/general/db/alter_tables_v4.sim
+++ b/tests/script/general/db/alter_tables_v4.sim
@@ -204,9 +204,9 @@ endi
 
 print ============================ step7
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql reset query cache
 sleep 1000
@@ -325,9 +325,9 @@ endi
 
 print ============================ step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/general/db/alter_vgroups.sim b/tests/script/general/db/alter_vgroups.sim
index 1aae7b9383..93f3b1c0e5 100644
--- a/tests/script/general/db/alter_vgroups.sim
+++ b/tests/script/general/db/alter_vgroups.sim
@@ -70,9 +70,9 @@ endi
 print ============================ step3
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 2
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql create table db.t100 using db.st tags(0)
 sql create table db.t101 using db.st tags(1)
@@ -132,9 +132,9 @@ print ============================ step5
 
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 system sh/cfg.sh -n dnode1 -c numOfTotalVnodes -v 3
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql create table db.t200 using db.st tags(0)
 sql create table db.t201 using db.st tags(1)
diff --git a/tests/script/general/db/backup/keep.sim b/tests/script/general/db/backup/keep.sim
index 156b32ba4c..29771fc978 100644
--- a/tests/script/general/db/backup/keep.sim
+++ b/tests/script/general/db/backup/keep.sim
@@ -50,9 +50,9 @@ endi
 
 print ======== step2 stop dnode
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode2 -s start
-sleep 3000
+sleep 5000
 
 sql select * from tb
 print ===> rows $rows
@@ -112,9 +112,9 @@ endi
 
 print ======== step5 stop dnode
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode2 -s start
-sleep 3000
+sleep 5000
 
 sql select * from tb
 print ===> rows $rows
diff --git a/tests/script/general/db/delete.sim b/tests/script/general/db/delete.sim
index f95676088b..6d0090a78d 100644
--- a/tests/script/general/db/delete.sim
+++ b/tests/script/general/db/delete.sim
@@ -43,7 +43,7 @@ endi
 
 print ======= step3
 system sh/exec.sh -n dnode1 -s stop  -x SIGINT
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start 
 
 $x = 0
diff --git a/tests/script/general/db/dropdnodes.sim b/tests/script/general/db/dropdnodes.sim
index 7ba5e7b66e..be160910c5 100644
--- a/tests/script/general/db/dropdnodes.sim
+++ b/tests/script/general/db/dropdnodes.sim
@@ -70,7 +70,7 @@ endi
 print ========== step3
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 500
+sleep 5000
 sql drop dnode $hostname2
 sleep 2000
 
@@ -101,4 +101,5 @@ endi
 sql_error select * from db.t1
 sql_error select * from db.t9
 
-system sh/exec.sh -n dnode1 -s stop -x SIGINT
\ No newline at end of file
+system sh/exec.sh -n dnode1 -s stop -x SIGINT
+system sh/exec.sh -n dnode2 -s stop -x SIGINT
\ No newline at end of file
diff --git a/tests/script/general/import/replica1.sim b/tests/script/general/import/replica1.sim
index c212e8723e..d450b3fb49 100644
--- a/tests/script/general/import/replica1.sim
+++ b/tests/script/general/import/replica1.sim
@@ -93,7 +93,7 @@ endi
 
 print ================== dnode restart
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 sleep 5000
 
@@ -162,7 +162,7 @@ endi
 
 print ================= step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 sleep 5000
 
diff --git a/tests/script/general/insert/insert_drop.sim b/tests/script/general/insert/insert_drop.sim
index c688a35557..cf29656067 100644
--- a/tests/script/general/insert/insert_drop.sim
+++ b/tests/script/general/insert/insert_drop.sim
@@ -43,7 +43,7 @@ print ====== tables created
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
@@ -69,7 +69,7 @@ endw
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 4000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/parser/auto_create_tb.sim b/tests/script/general/parser/auto_create_tb.sim
index ad65ea723f..6065daa6d3 100644
--- a/tests/script/general/parser/auto_create_tb.sim
+++ b/tests/script/general/parser/auto_create_tb.sim
@@ -208,7 +208,7 @@ endi
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/commit.sim b/tests/script/general/parser/commit.sim
index f1c980f3db..ecf7113926 100644
--- a/tests/script/general/parser/commit.sim
+++ b/tests/script/general/parser/commit.sim
@@ -81,7 +81,7 @@ endw
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 sleep 3000
 print ================== server restart completed
diff --git a/tests/script/general/parser/first_last.sim b/tests/script/general/parser/first_last.sim
index 48288daeca..fa2d7675d2 100644
--- a/tests/script/general/parser/first_last.sim
+++ b/tests/script/general/parser/first_last.sim
@@ -75,7 +75,7 @@ run general/parser/first_last_query.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/interp.sim b/tests/script/general/parser/interp.sim
index 4033d1c735..1cd857162d 100644
--- a/tests/script/general/parser/interp.sim
+++ b/tests/script/general/parser/interp.sim
@@ -60,7 +60,7 @@ run general/parser/interp_test.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/parser/lastrow.sim b/tests/script/general/parser/lastrow.sim
index 29f535942d..48f6e65a4f 100644
--- a/tests/script/general/parser/lastrow.sim
+++ b/tests/script/general/parser/lastrow.sim
@@ -61,7 +61,7 @@ run general/parser/lastrow_query.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/limit.sim b/tests/script/general/parser/limit.sim
index e3e952bdd3..2129c6b82a 100644
--- a/tests/script/general/parser/limit.sim
+++ b/tests/script/general/parser/limit.sim
@@ -61,7 +61,7 @@ run general/parser/limit_stb.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/limit1.sim b/tests/script/general/parser/limit1.sim
index 48fb6aaede..84b760ced9 100644
--- a/tests/script/general/parser/limit1.sim
+++ b/tests/script/general/parser/limit1.sim
@@ -61,7 +61,7 @@ run general/parser/limit1_stb.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/parser/limit1_tblocks100.sim b/tests/script/general/parser/limit1_tblocks100.sim
index 126c3227a7..99ffd31f6d 100644
--- a/tests/script/general/parser/limit1_tblocks100.sim
+++ b/tests/script/general/parser/limit1_tblocks100.sim
@@ -61,7 +61,7 @@ run general/parser/limit1_stb.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/parser/limit2.sim b/tests/script/general/parser/limit2.sim
index 5f71232585..d16ee29cf7 100644
--- a/tests/script/general/parser/limit2.sim
+++ b/tests/script/general/parser/limit2.sim
@@ -71,7 +71,7 @@ print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 
 return
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/parser/select_from_cache_disk.sim b/tests/script/general/parser/select_from_cache_disk.sim
index 9ffdf817d7..629d456761 100644
--- a/tests/script/general/parser/select_from_cache_disk.sim
+++ b/tests/script/general/parser/select_from_cache_disk.sim
@@ -36,7 +36,7 @@ sql insert into $tb values ('2018-09-17 09:00:00.030', 3)
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/single_row_in_tb.sim b/tests/script/general/parser/single_row_in_tb.sim
index 200047140e..2313a98b41 100644
--- a/tests/script/general/parser/single_row_in_tb.sim
+++ b/tests/script/general/parser/single_row_in_tb.sim
@@ -31,7 +31,7 @@ run general/parser/single_row_in_tb_query.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/parser/slimit.sim b/tests/script/general/parser/slimit.sim
index be63f91803..3d28ac3d54 100644
--- a/tests/script/general/parser/slimit.sim
+++ b/tests/script/general/parser/slimit.sim
@@ -98,7 +98,7 @@ run general/parser/slimit_query.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/slimit1.sim b/tests/script/general/parser/slimit1.sim
index b987a6852b..05e34bc7f4 100644
--- a/tests/script/general/parser/slimit1.sim
+++ b/tests/script/general/parser/slimit1.sim
@@ -57,7 +57,7 @@ run general/parser/slimit1_query.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/slimit_alter_tags.sim b/tests/script/general/parser/slimit_alter_tags.sim
index b8397f950c..54bc868f6a 100644
--- a/tests/script/general/parser/slimit_alter_tags.sim
+++ b/tests/script/general/parser/slimit_alter_tags.sim
@@ -170,7 +170,7 @@ endi
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 sql connect
diff --git a/tests/script/general/parser/tbnameIn.sim b/tests/script/general/parser/tbnameIn.sim
index 16302888d0..fd5f32972a 100644
--- a/tests/script/general/parser/tbnameIn.sim
+++ b/tests/script/general/parser/tbnameIn.sim
@@ -68,7 +68,7 @@ run general/parser/tbnameIn_query.sim
 
 print ================== restart server to commit data into disk
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 print ================== server restart completed
 
diff --git a/tests/script/general/stable/disk.sim b/tests/script/general/stable/disk.sim
index 0865719a14..c7ddfb0591 100644
--- a/tests/script/general/stable/disk.sim
+++ b/tests/script/general/stable/disk.sim
@@ -58,7 +58,7 @@ endi
 
 sleep 1000
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 sleep 6000
 
diff --git a/tests/script/general/stable/dnode3.sim b/tests/script/general/stable/dnode3.sim
index 38d05a924b..7e85641598 100644
--- a/tests/script/general/stable/dnode3.sim
+++ b/tests/script/general/stable/dnode3.sim
@@ -213,11 +213,4 @@ if $rows != 0 then
   return -1
 endi
 
-system sh/exec.sh -n dnode1 -s stop  -x SIGINT
-system sh/exec.sh -n dnode2 -s stop  -x SIGINT
-system sh/exec.sh -n dnode3 -s stop  -x SIGINT
-system sh/exec.sh -n dnode4 -s stop  -x SIGINT
-system sh/exec.sh -n dnode5 -s stop  -x SIGINT
-system sh/exec.sh -n dnode6 -s stop  -x SIGINT
-system sh/exec.sh -n dnode7 -s stop  -x SIGINT
-system sh/exec.sh -n dnode8 -s stop  -x SIGINT
\ No newline at end of file
+system sh/exec.sh -n dnode1 -s stop  -x SIGINT
\ No newline at end of file
diff --git a/tests/script/general/tag/commit.sim b/tests/script/general/tag/commit.sim
index 94dc13f0cf..fca94ee7d4 100644
--- a/tests/script/general/tag/commit.sim
+++ b/tests/script/general/tag/commit.sim
@@ -824,7 +824,7 @@ endi
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
 sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 print =============== step1
 $i = 0
diff --git a/tests/script/unique/big/balance.sim b/tests/script/unique/big/balance.sim
index 09fca14931..b2a15b0b96 100644
--- a/tests/script/unique/big/balance.sim
+++ b/tests/script/unique/big/balance.sim
@@ -171,6 +171,7 @@ if $data2_3 != 2 then
 endi
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep 5000
 
 sql reset query cache
 sleep 1000
@@ -227,6 +228,7 @@ if $data2_3 != null then
 endi
 
 system sh/exec.sh -n dnode3 -s stop -x SIGINT
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/unique/cluster/balance1.sim b/tests/script/unique/cluster/balance1.sim
index 80dfd81e34..c402c111cf 100644
--- a/tests/script/unique/cluster/balance1.sim
+++ b/tests/script/unique/cluster/balance1.sim
@@ -163,7 +163,7 @@ print dnode4 ==> $dnode4Role
 print ============================== step5
 print ========= add dnode2
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode3 -s start
 sql create dnode $hostname3
 sleep 9000
diff --git a/tests/script/unique/cluster/balance3.sim b/tests/script/unique/cluster/balance3.sim
index 77eba2a2a5..8920ec9fc1 100644
--- a/tests/script/unique/cluster/balance3.sim
+++ b/tests/script/unique/cluster/balance3.sim
@@ -381,6 +381,7 @@ if $dnode7Vnodes != 3 then
 endi
 
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
+sleep 5000
 
 print ============================== step11
 print ========= add db4
@@ -429,6 +430,7 @@ if $dnode7Vnodes != 4 then
 endi
 
 system sh/exec.sh -n dnode1 -s stop  -x SIGINT
+sleep 5000
 
 print ============================== step13
 sql reset query cache
diff --git a/tests/script/unique/db/commit.sim b/tests/script/unique/db/commit.sim
index 98256b01dc..caff3c6a78 100644
--- a/tests/script/unique/db/commit.sim
+++ b/tests/script/unique/db/commit.sim
@@ -50,7 +50,7 @@ print ======== step2 stop dnode
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
 sleep 5000
 system sh/exec.sh -n dnode2 -s start
-sleep 3000
+sleep 5000
 
 sql select * from tb order by ts desc
 print ===> rows $rows
@@ -101,7 +101,7 @@ print ======== step5 stop dnode
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
 sleep 5000
 system sh/exec.sh -n dnode2 -s start
-sleep 3000
+sleep 5000
 
 sql select * from tb
 print ===> rows $rows
diff --git a/tests/script/unique/db/delete.sim b/tests/script/unique/db/delete.sim
index d9b6e8a9f9..819da67c8a 100644
--- a/tests/script/unique/db/delete.sim
+++ b/tests/script/unique/db/delete.sim
@@ -69,7 +69,7 @@ system sh/exec.sh -n dnode1 -s stop  -x SIGINT
 system sh/exec.sh -n dnode2 -s stop  -x SIGINT
 system sh/exec.sh -n dnode3 -s stop  -x SIGINT
 
-sleep 1000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
 system sh/exec.sh -n dnode2 -s start
 system sh/exec.sh -n dnode3 -s start
diff --git a/tests/script/unique/db/replica_add13.sim b/tests/script/unique/db/replica_add13.sim
index 1b5a01a9fd..9cc1545bfa 100644
--- a/tests/script/unique/db/replica_add13.sim
+++ b/tests/script/unique/db/replica_add13.sim
@@ -171,7 +171,7 @@ print ========= step6
 system sh/exec.sh -n dnode2 -s start
 sleep 5000
 system sh/exec.sh -n dnode3 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 
 sql insert into d1.t1 values(1589529000014, 4)
 sql insert into d2.t2 values(1589529000024, 4)
@@ -206,7 +206,7 @@ print ========= step7
 system sh/exec.sh -n dnode3 -s start
 sleep 5000
 system sh/exec.sh -n dnode4 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 
 sql insert into d1.t1 values(1589529000015, 5)
 sql insert into d2.t2 values(1589529000025, 5)
@@ -237,7 +237,7 @@ print ========= step8
 system sh/exec.sh -n dnode4 -s start
 sleep 5000
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 
 sql insert into d1.t1 values(1589529000016, 6)
 sql insert into d2.t2 values(1589529000026, 6)
diff --git a/tests/script/unique/db/replica_reduce21.sim b/tests/script/unique/db/replica_reduce21.sim
index 9dc5abcd0d..a61cb84c11 100644
--- a/tests/script/unique/db/replica_reduce21.sim
+++ b/tests/script/unique/db/replica_reduce21.sim
@@ -118,7 +118,7 @@ endi
 
 print ======== step9 stop dnode2
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 
 sql insert into d5.t5 values(now, 3)
 sql insert into d2.t2 values(now, 3)
diff --git a/tests/script/unique/dnode/balance2.sim b/tests/script/unique/dnode/balance2.sim
index 374e3dd5ba..e23562d8b4 100644
--- a/tests/script/unique/dnode/balance2.sim
+++ b/tests/script/unique/dnode/balance2.sim
@@ -84,6 +84,7 @@ if $data2_3 != 2 then
 endi
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep 5000
 
 print ========== step3
 sql create dnode $hostname4
@@ -210,6 +211,7 @@ if $data2_5 != 3 then
 endi
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/unique/dnode/balance3.sim b/tests/script/unique/dnode/balance3.sim
index 786b4404ba..a09fd7e4ea 100644
--- a/tests/script/unique/dnode/balance3.sim
+++ b/tests/script/unique/dnode/balance3.sim
@@ -99,7 +99,7 @@ if $data2_4 != 2 then
 endi
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
-
+sleep 5000
 print ========== step
 sql create dnode $hostname5
 system sh/exec.sh -n dnode5 -s start
@@ -239,6 +239,7 @@ if $data2_5 != 3 then
 endi
 
 system sh/exec.sh -n dnode3 -s stop -x SIGINT
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/unique/dnode/balancex.sim b/tests/script/unique/dnode/balancex.sim
index fdb20434ff..0d5da5bbf6 100644
--- a/tests/script/unique/dnode/balancex.sim
+++ b/tests/script/unique/dnode/balancex.sim
@@ -140,6 +140,7 @@ if $data2_3 != 3 then
 endi
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep 5000
 
 sql reset query cache
 sleep 1000
diff --git a/tests/script/unique/dnode/remove1.sim b/tests/script/unique/dnode/remove1.sim
index 5c4d30e728..246808c56c 100644
--- a/tests/script/unique/dnode/remove1.sim
+++ b/tests/script/unique/dnode/remove1.sim
@@ -110,6 +110,7 @@ if $data2_2 != null then
 endi
 
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
+sleep 5000
 
 print ========== step5
 sql create dnode $hostname4
diff --git a/tests/script/unique/dnode/remove2.sim b/tests/script/unique/dnode/remove2.sim
index 76c5fbb08e..cf9954c767 100644
--- a/tests/script/unique/dnode/remove2.sim
+++ b/tests/script/unique/dnode/remove2.sim
@@ -76,7 +76,7 @@ endi
 print ========== step3
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
 sql drop dnode $hostname2
-sleep 4000
+sleep 5000
 
 sql show dnodes
 print dnode1 openVnodes $data2_1
diff --git a/tests/script/unique/dnode/vnode_clean.sim b/tests/script/unique/dnode/vnode_clean.sim
index 6ab63bd94f..e1ee1da2aa 100644
--- a/tests/script/unique/dnode/vnode_clean.sim
+++ b/tests/script/unique/dnode/vnode_clean.sim
@@ -101,7 +101,7 @@ endi
 system sh/exec.sh -n dnode2 -s stop -x SIGINT
 
 print ========== step5
-sleep 2000
+sleep 5000
 sql create dnode $hostname3
 system sh/exec.sh -n dnode3 -s start
 
@@ -222,7 +222,8 @@ if $data2_4 != 4 then
   goto show9
 endi
 
-system sh/exec.sh -n dnode3 -s stop -x SIGINT
+system sh/exec.sh -n dnode3 -s stop 
+sleep 5000
 
 print ========== step10
 sql select * from d1.t1  order by t desc
diff --git a/tests/script/unique/mnode/mgmt22.sim b/tests/script/unique/mnode/mgmt22.sim
index 08fe8d346a..d55e36d7fc 100644
--- a/tests/script/unique/mnode/mgmt22.sim
+++ b/tests/script/unique/mnode/mgmt22.sim
@@ -47,7 +47,7 @@ print should not drop master
 
 print ============== step4
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 2000
+sleep 5000
 sql_error show mnodes
 print error of no master
 
diff --git a/tests/script/windows/alter/metrics.sim b/tests/script/windows/alter/metrics.sim
index ce003a9836..323e150d41 100644
--- a/tests/script/windows/alter/metrics.sim
+++ b/tests/script/windows/alter/metrics.sim
@@ -368,9 +368,9 @@ endi
 print ======== step9
 print ======== step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql use d2
 sql describe tb
diff --git a/tests/script/windows/alter/table.sim b/tests/script/windows/alter/table.sim
index 155debda0d..e6b5d69551 100644
--- a/tests/script/windows/alter/table.sim
+++ b/tests/script/windows/alter/table.sim
@@ -319,9 +319,9 @@ endi
 print ======== step9
 print ======== step10
 system sh/exec.sh -n dnode1 -s stop -x SIGINT
-sleep 3000
+sleep 5000
 system sh/exec.sh -n dnode1 -s start
-sleep 3000
+sleep 5000
 
 sql use d1
 sql describe tb