diff --git a/src/client/src/tscParseInsert.c b/src/client/src/tscParseInsert.c
index b43fe1fcd7..a2dcb5d89a 100644
--- a/src/client/src/tscParseInsert.c
+++ b/src/client/src/tscParseInsert.c
@@ -1413,13 +1413,25 @@ static void parseFileSendDataBlock(void *param, TAOS_RES *tres, int code) {
   if (taos_errno(pSql) != TSDB_CODE_SUCCESS) {  // handle error
     assert(taos_errno(pSql) == code);
 
-    taos_free_result(pSql);
-    tfree(pSupporter);
-    fclose(fp);
+    do {
+      if (code == TSDB_CODE_TDB_TABLE_RECONFIGURE) {
+        assert(pSql->res.numOfRows == 0);
+        int32_t errc = fseek(fp, 0, SEEK_SET);
+        if (errc < 0) {
+          tscError("%p failed to seek SEEK_SET since:%s", pSql, tstrerror(errno));
+        } else {
+          break;
+        }
+      }
 
-    pParentSql->res.code = code;
-    tscQueueAsyncRes(pParentSql);
-    return;
+      taos_free_result(pSql);
+      tfree(pSupporter);
+      fclose(fp);
+
+      pParentSql->res.code = code;
+      tscQueueAsyncRes(pParentSql);
+      return;
+    } while (0);
   }
 
   // accumulate the total submit records
diff --git a/src/client/src/tscServer.c b/src/client/src/tscServer.c
index 05ff44fbeb..f7a2236262 100644
--- a/src/client/src/tscServer.c
+++ b/src/client/src/tscServer.c
@@ -890,13 +890,13 @@ int tscBuildQueryMsg(SSqlObj *pSql, SSqlInfo *pInfo) {
     for (int32_t j = 0; j < pGroupbyExpr->numOfGroupCols; ++j) {
       SColIndex* pCol = taosArrayGet(pGroupbyExpr->columnInfo, j);
   
-      *((int16_t *)pMsg) = pCol->colId;
+      *((int16_t *)pMsg) = htons(pCol->colId);
       pMsg += sizeof(pCol->colId);
 
-      *((int16_t *)pMsg) += pCol->colIndex;
+      *((int16_t *)pMsg) += htons(pCol->colIndex);
       pMsg += sizeof(pCol->colIndex);
 
-      *((int16_t *)pMsg) += pCol->flag;
+      *((int16_t *)pMsg) += htons(pCol->flag);
       pMsg += sizeof(pCol->flag);
       
       memcpy(pMsg, pCol->name, tListLen(pCol->name));
diff --git a/src/client/src/tscSub.c b/src/client/src/tscSub.c
index 52b74f7502..7f0b174ad3 100644
--- a/src/client/src/tscSub.c
+++ b/src/client/src/tscSub.c
@@ -69,14 +69,17 @@ TSKEY tscGetSubscriptionProgress(void* sub, int64_t uid, TSKEY dflt) {
 }
 
 void tscUpdateSubscriptionProgress(void* sub, int64_t uid, TSKEY ts) {
-  if( sub == NULL)
+  if( sub == NULL) {
     return;
+  }
+
   SSub* pSub = (SSub*)sub;
 
   SSubscriptionProgress target = {.uid = uid, .key = ts};
   SSubscriptionProgress* p = taosArraySearch(pSub->progress, &target, tscCompareSubscriptionProgress);
   if (p != NULL) {
     p->key = ts;
+    tscDebug("subscribe:%s, uid:%"PRIu64" update sub start ts:%"PRId64, pSub->topic, p->uid, p->key);
   }
 }
 
@@ -502,6 +505,7 @@ TAOS_RES *taos_consume(TAOS_SUB *tsub) {
   SQueryInfo *pQueryInfo = tscGetQueryInfoDetail(pCmd, 0);
   if (taosArrayGetSize(pSub->progress) > 0) { // fix crash in single tabel subscription
     pQueryInfo->window.skey = ((SSubscriptionProgress*)taosArrayGet(pSub->progress, 0))->key;
+    tscDebug("subscribe:%s set subscribe skey:%"PRId64, pSub->topic, pQueryInfo->window.skey);
   }
 
   if (pSub->pTimer == NULL) {
diff --git a/src/common/inc/tglobal.h b/src/common/inc/tglobal.h
index ec20af259d..f1fc5ca808 100644
--- a/src/common/inc/tglobal.h
+++ b/src/common/inc/tglobal.h
@@ -164,7 +164,7 @@ extern float   tsMinimalLogDirGB;
 extern float   tsReservedTmpDirectorySpace;
 extern float   tsMinimalDataDirGB;
 extern int32_t tsTotalMemoryMB;
-extern int32_t tsVersion;
+extern uint32_t tsVersion;
 
 // build info
 extern char version[];
diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index 17f9f4e496..8fa17f8751 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -204,7 +204,7 @@ float   tsAvailDataDirGB = 0;
 float   tsReservedTmpDirectorySpace = 1.0f;
 float   tsMinimalDataDirGB = 1.0f;
 int32_t tsTotalMemoryMB = 0;
-int32_t tsVersion = 0;
+uint32_t tsVersion = 0;
 
 // log
 int32_t tsNumOfLogLines = 10000000;
@@ -1478,15 +1478,20 @@ int32_t taosCheckGlobalCfg() {
 
   // todo refactor
   tsVersion = 0;
-  for (int i = 0; i < 10; i++) {
+  for (int ver = 0, i = 0; i < TSDB_VERSION_LEN; ++i) {
     if (version[i] >= '0' && version[i] <= '9') {
-      tsVersion = tsVersion * 10 + (version[i] - '0');
+      ver = ver * 10 + (version[i] - '0');
+    } else if (version[i] == '.') {
+      tsVersion |= ver & 0xFF;
+      tsVersion <<= 8;
+
+      ver = 0;
     } else if (version[i] == 0) {
+      tsVersion |= ver & 0xFF;
+
       break;
     }
   }
-  
-  tsVersion = 10 * tsVersion;
 
   tsDnodeShellPort = tsServerPort + TSDB_PORT_DNODESHELL;  // udp[6035-6039] tcp[6035]
   tsDnodeDnodePort = tsServerPort + TSDB_PORT_DNODEDNODE;   // udp/tcp
diff --git a/src/inc/taoserror.h b/src/inc/taoserror.h
index 7c7e7ec31a..69c01e6763 100644
--- a/src/inc/taoserror.h
+++ b/src/inc/taoserror.h
@@ -67,6 +67,7 @@ TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_RESPONSE_TYPE,    0, 0x0012, "Invalid re
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_TIME_STAMP,       0, 0x0013, "Client and server's time is not synchronized")
 TAOS_DEFINE_ERROR(TSDB_CODE_APP_NOT_READY,                0, 0x0014, "Database not ready")
 TAOS_DEFINE_ERROR(TSDB_CODE_RPC_FQDN_ERROR,               0, 0x0015, "Unable to resolve FQDN")
+TAOS_DEFINE_ERROR(TSDB_CODE_RPC_INVALID_VERSION,          0, 0x0016, "Invalid app version")
 
 //common & util
 TAOS_DEFINE_ERROR(TSDB_CODE_COM_OPS_NOT_SUPPORT,          0, 0x0100, "Operation not supported")
diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index e54fbd54e8..7fb366160c 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -1722,6 +1722,10 @@ static int32_t tableApplyFunctionsOnBlock(SQueryRuntimeEnv *pRuntimeEnv, SDataBl
     blockwiseApplyFunctions(pRuntimeEnv, pStatis, pDataBlockInfo, pResultRowInfo, searchFn, pDataBlock);
   }
 
+  // update the lastkey of current table for projection/aggregation query
+  TSKEY lastKey = QUERY_IS_ASC_QUERY(pQuery) ? pDataBlockInfo->window.ekey : pDataBlockInfo->window.skey;
+  pTableQueryInfo->lastKey = lastKey + GET_FORWARD_DIRECTION_FACTOR(pQuery->order.order);
+
   // interval query with limit applied
   int32_t numOfRes = 0;
   if (QUERY_IS_INTERVAL_QUERY(pQuery) || pRuntimeEnv->groupbyNormalCol) {
@@ -4299,7 +4303,9 @@ static void doCopyQueryResultToMsg(SQInfo *pQInfo, int32_t numOfRows, char *data
   *(int32_t*)data = htonl(numOfTables);
   data += sizeof(int32_t);
 
+  int32_t total = 0;
   STableIdInfo* item = taosHashIterate(pQInfo->arrTableIdInfo, NULL);
+
   while(item) {
     STableIdInfo* pDst = (STableIdInfo*)data;
     pDst->uid = htobe64(item->uid);
@@ -4307,9 +4313,14 @@ static void doCopyQueryResultToMsg(SQInfo *pQInfo, int32_t numOfRows, char *data
     pDst->key = htobe64(item->key);
 
     data += sizeof(STableIdInfo);
+    total++;
+
+    qDebug("QInfo:%p set subscribe info, tid:%d, uid:%"PRIu64", skey:%"PRId64, pQInfo, item->tid, item->uid, item->key);
     item = taosHashIterate(pQInfo->arrTableIdInfo, item);
   }
 
+  qDebug("QInfo:%p set %d subscribe info", pQInfo, total);
+
   // Check if query is completed or not for stable query or normal table query respectively.
   if (Q_STATUS_EQUAL(pQuery->status, QUERY_COMPLETED)) {
     if (pQInfo->runtimeEnv.stableQuery) {
@@ -6214,13 +6225,13 @@ static int32_t convertQueryMsg(SQueryTableMsg *pQueryMsg, SArray **pTableIdList,
     }
 
     for (int32_t i = 0; i < pQueryMsg->numOfGroupCols; ++i) {
-      (*groupbyCols)[i].colId = *(int16_t *)pMsg;
+      (*groupbyCols)[i].colId = htons(*(int16_t *)pMsg);
       pMsg += sizeof((*groupbyCols)[i].colId);
 
-      (*groupbyCols)[i].colIndex = *(int16_t *)pMsg;
+      (*groupbyCols)[i].colIndex = htons(*(int16_t *)pMsg);
       pMsg += sizeof((*groupbyCols)[i].colIndex);
 
-      (*groupbyCols)[i].flag = *(int16_t *)pMsg;
+      (*groupbyCols)[i].flag = htons(*(int16_t *)pMsg);
       pMsg += sizeof((*groupbyCols)[i].flag);
 
       memcpy((*groupbyCols)[i].name, pMsg, tListLen(groupbyCols[i]->name));
diff --git a/src/rpc/inc/rpcHead.h b/src/rpc/inc/rpcHead.h
index 520edadc7d..5b401ac54b 100644
--- a/src/rpc/inc/rpcHead.h
+++ b/src/rpc/inc/rpcHead.h
@@ -20,10 +20,6 @@
 extern "C" {
 #endif
 
-#define RPC_CONN_UDPS   0
-#define RPC_CONN_UDPC   1
-#define RPC_CONN_TCPS   2
-#define RPC_CONN_TCPC   3
 #define RPC_CONN_TCP    2
 
 extern int tsRpcOverhead;
@@ -58,6 +54,7 @@ typedef struct {
   char     empty[1];  // reserved
   uint8_t  msgType;   // message type  
   int32_t  msgLen;    // message length including the header iteslf
+  uint32_t msgVer;
   int32_t  code;      // code in response message
   uint8_t  content[0]; // message body starts from here
 } SRpcHead;
diff --git a/src/rpc/src/rpcMain.c b/src/rpc/src/rpcMain.c
index 9a3a42ed15..ec1ee75dbb 100644
--- a/src/rpc/src/rpcMain.c
+++ b/src/rpc/src/rpcMain.c
@@ -142,7 +142,6 @@ static int32_t tsRpcNum = 0;
 #define RPC_CONN_UDPC   1
 #define RPC_CONN_TCPS   2
 #define RPC_CONN_TCPC   3
-#define RPC_CONN_TCP    2
 
 void *(*taosInitConn[])(uint32_t ip, uint16_t port, char *label, int threads, void *fp, void *shandle) = {
     taosInitUdpConnection,
@@ -959,6 +958,11 @@ static SRpcConn *rpcProcessMsgHead(SRpcInfo *pRpc, SRecvInfo *pRecv, SRpcReqCont
     terrno = TSDB_CODE_RPC_INVALID_SESSION_ID; return NULL;
   }
 
+  if (rpcIsReq(pHead->msgType) && htonl(pHead->msgVer) != tsVersion >> 8) {
+    tDebug("%s sid:%d, invalid client version:%x/%x %s", pRpc->label, sid, htonl(pHead->msgVer), tsVersion, taosMsg[pHead->msgType]);
+    terrno = TSDB_CODE_RPC_INVALID_VERSION; return NULL;
+  }
+
   pConn = rpcGetConnObj(pRpc, sid, pRecv);
   if (pConn == NULL) {
     tDebug("%s %p, failed to get connection obj(%s)", pRpc->label, (void *)pHead->ahandle, tstrerror(terrno)); 
@@ -1212,6 +1216,7 @@ static void rpcSendReqHead(SRpcConn *pConn) {
   pHead = (SRpcHead *)msg;
   pHead->version = 1;
   pHead->msgType = pConn->outType;
+  pHead->msgVer = htonl(tsVersion >> 8);
   pHead->spi = pConn->spi;
   pHead->encrypt = 0;
   pHead->tranId = pConn->outTranId;
@@ -1282,6 +1287,7 @@ static void rpcSendReqToServer(SRpcInfo *pRpc, SRpcReqContext *pContext) {
 
   // set the message header  
   pHead->version = 1;
+  pHead->msgVer = htonl(tsVersion >> 8);
   pHead->msgType = msgType;
   pHead->encrypt = 0;
   pConn->tranId++;
diff --git a/src/util/inc/buildInfo.h b/src/util/inc/buildInfo.h
deleted file mode 100644
index 8d169d618d..0000000000
--- a/src/util/inc/buildInfo.h
+++ /dev/null
@@ -1,7 +0,0 @@
-#ifndef _TS_BUILD_H_
-#define _TS_BUILD_H_
-
-extern const char tsVersion[];
-extern const char tsBuildInfo[];
-
-#endif