diff --git a/source/libs/executor/src/scanoperator.c b/source/libs/executor/src/scanoperator.c
index eac4f87b14..095d7e1a2b 100644
--- a/source/libs/executor/src/scanoperator.c
+++ b/source/libs/executor/src/scanoperator.c
@@ -3410,6 +3410,8 @@ int32_t streamScanOperatorEncode(SStreamScanInfo* pInfo, void** pBuff, int32_t*
     QUERY_CHECK_CODE(code, lino, _end);
   }
 
+  qDebug("%s last scan range %d. %" PRId64 ",%" PRId64, __func__, __LINE__, pInfo->lastScanRange.skey, pInfo->lastScanRange.ekey);
+
   *pLen = len;
 
 _end:
@@ -3475,21 +3477,20 @@ void streamScanOperatorDecode(void* pBuff, int32_t len, SStreamScanInfo* pInfo)
     goto _end;
   }
 
-  if (pInfo->pUpdateInfo != NULL) {
-    void* pUpInfo = taosMemoryCalloc(1, sizeof(SUpdateInfo));
-    if (!pUpInfo) {
-      lino = __LINE__;
-      goto _end;
-    }
-    code = pInfo->stateStore.updateInfoDeserialize(pDeCoder, pUpInfo);
-    if (code == TSDB_CODE_SUCCESS) {
-      pInfo->stateStore.updateInfoDestroy(pInfo->pUpdateInfo);
-      pInfo->pUpdateInfo = pUpInfo;
-    } else {
-      taosMemoryFree(pUpInfo);
-      lino = __LINE__;
-      goto _end;
-    }
+  void* pUpInfo = taosMemoryCalloc(1, sizeof(SUpdateInfo));
+  if (!pUpInfo) {
+    lino = __LINE__;
+    goto _end;
+  }
+  code = pInfo->stateStore.updateInfoDeserialize(pDeCoder, pUpInfo);
+  if (code == TSDB_CODE_SUCCESS) {
+    pInfo->stateStore.updateInfoDestroy(pInfo->pUpdateInfo);
+    pInfo->pUpdateInfo = pUpInfo;
+    qDebug("%s line:%d. stream scan updateinfo deserialize success", __func__, __LINE__);
+  } else {
+    taosMemoryFree(pUpInfo);
+    code = TSDB_CODE_SUCCESS;
+    qDebug("%s line:%d. stream scan did not have updateinfo", __func__, __LINE__);
   }
 
   if (tDecodeIsEnd(pDeCoder)) {
@@ -3509,6 +3510,7 @@ void streamScanOperatorDecode(void* pBuff, int32_t len, SStreamScanInfo* pInfo)
     lino = __LINE__;
     goto _end;
   }
+  qDebug("%s last scan range %d. %" PRId64 ",%" PRId64, __func__, __LINE__, pInfo->lastScanRange.skey, pInfo->lastScanRange.ekey);
 
 _end:
   if (pDeCoder != NULL) {
diff --git a/source/libs/stream/src/streamUpdate.c b/source/libs/stream/src/streamUpdate.c
index a3cfa00127..49d5041369 100644
--- a/source/libs/stream/src/streamUpdate.c
+++ b/source/libs/stream/src/streamUpdate.c
@@ -445,6 +445,11 @@ int32_t updateInfoSerialize(SEncoder* pEncoder, const SUpdateInfo* pInfo) {
   int32_t code = TSDB_CODE_SUCCESS;
   int32_t lino = 0;
   if (!pInfo) {
+    if (tEncodeI32(pEncoder, -1) < 0) {
+      code = TSDB_CODE_FAILED;
+      QUERY_CHECK_CODE(code, lino, _end);
+    }
+    uDebug("%s line:%d. it did not have updateinfo", __func__, __LINE__);
     return TSDB_CODE_SUCCESS;
   }
 
@@ -550,6 +555,10 @@ int32_t updateInfoDeserialize(SDecoder* pDeCoder, SUpdateInfo* pInfo) {
   
   int32_t size = 0;
   if (tDecodeI32(pDeCoder, &size) < 0) return -1;
+
+  if (size < 0) {
+    return -1;
+  }
   pInfo->pTsBuckets = taosArrayInit(size, sizeof(TSKEY));
   QUERY_CHECK_NULL(pInfo->pTsBuckets, code, lino, _error, terrno);
 
diff --git a/tests/script/tsim/stream/streamFwcIntervalCheckpoint.sim b/tests/script/tsim/stream/streamFwcIntervalCheckpoint.sim
new file mode 100644
index 0000000000..ed72d87e9a
--- /dev/null
+++ b/tests/script/tsim/stream/streamFwcIntervalCheckpoint.sim
@@ -0,0 +1,67 @@
+system sh/stop_dnodes.sh
+system sh/deploy.sh -n dnode1 -i 1
+
+system sh/cfg.sh -n dnode1 -c checkpointInterval -v 60
+
+system sh/exec.sh -n dnode1 -s start
+sleep 50
+sql connect
+
+print step1
+print =============== create database
+sql create database test vgroups 4;
+sql use test;
+
+sql create stable st(ts timestamp, a int, b int , c int)tags(ta int,tb int,tc int);
+sql create table t1 using st tags(1,1,1);
+sql create table t2 using st tags(2,2,2);
+
+sql create stream streams1 trigger force_window_close IGNORE EXPIRED 1 IGNORE UPDATE 1 into  streamt1 as select _wstart, count(a) from st partition by tbname interval(2s);
+sql create stream streams2 trigger at_once IGNORE EXPIRED 0 IGNORE UPDATE 0 into  streamt2 as select _wstart, count(a) from st interval(2s);
+
+run tsim/stream/checkTaskStatus.sim
+
+sleep 70000
+
+
+print restart taosd 01 ......
+
+system sh/stop_dnodes.sh
+
+system sh/exec.sh -n dnode1 -s start
+
+run tsim/stream/checkTaskStatus.sim
+
+sql insert into t1 values(now +  3000a,1,1,1);
+
+$loop_count = 0
+loop0:
+
+sleep 2000
+
+$loop_count = $loop_count + 1
+if $loop_count == 20 then
+  return -1
+endi
+
+print select * from streamt1;
+sql select * from streamt1;
+
+print $data00 $data01 $data02
+
+if $rows == 0 then
+  goto loop0
+endi
+
+print select * from streamt2;
+sql select * from streamt2;
+
+print $data00 $data01 $data02
+
+if $rows == 0 then
+  goto loop0
+endi
+
+print end
+
+system sh/exec.sh -n dnode1 -s stop -x SIGINT