diff --git a/src/client/inc/tsclient.h b/src/client/inc/tsclient.h
index 4bfd3bc88ff05c592d98fad4a0499c53894eb43a..0e63fa35514ea1b8f237de3031962e70140f4f4b 100644
--- a/src/client/inc/tsclient.h
+++ b/src/client/inc/tsclient.h
@@ -422,6 +422,7 @@ typedef struct SSqlStream {
   int64_t ctime;     // stream created time
   int64_t stime;     // stream next executed time
   int64_t etime;     // stream end query time, when time is larger then etime, the stream will be closed
+  int64_t ltime;     // stream last row time in stream table
   SInterval interval;
   void *  pTimer;
 
diff --git a/src/client/src/tscStream.c b/src/client/src/tscStream.c
index f0f87f26db3990a5546a6dc7be75dfae68fa88a1..0401d1f3b27e590f4642644023a44a189ebdcc59 100644
--- a/src/client/src/tscStream.c
+++ b/src/client/src/tscStream.c
@@ -25,6 +25,7 @@
 #include "tutil.h"
 
 #include "tscProfile.h"
+#include "tscSubquery.h"
 
 static void tscProcessStreamQueryCallback(void *param, TAOS_RES *tres, int numOfRows);
 static void tscProcessStreamRetrieveResult(void *param, TAOS_RES *res, int numOfRows);
@@ -48,8 +49,8 @@ static bool isProjectStream(SQueryInfo* pQueryInfo) {
 
 static int64_t tscGetRetryDelayTime(SSqlStream* pStream, int64_t slidingTime, int16_t prec) {
   float retryRangeFactor = 0.3f;
-  int64_t retryDelta = (int64_t)(tsStreamCompRetryDelay * retryRangeFactor);
-  retryDelta = ((rand() % retryDelta) + tsStreamCompRetryDelay) * 1000L;
+  int64_t retryDelta = (int64_t)(tsRetryStreamCompDelay * retryRangeFactor);
+  retryDelta = ((rand() % retryDelta) + tsRetryStreamCompDelay) * 1000L;
 
   if (pStream->interval.intervalUnit != 'n' && pStream->interval.intervalUnit != 'y') {
     // change to ms
@@ -572,6 +573,14 @@ static void tscCreateStream(void *param, TAOS_RES *res, int code) {
 
   pStream->stime = tscGetStreamStartTimestamp(pSql, pStream, pStream->stime);
 
+  // set stime with ltime if ltime > stime
+  const char* dstTable = pStream->dstTable? pStream->dstTable: "";
+  tscDebug(" CQ table=%s ltime is %"PRId64, dstTable, pStream->ltime);
+  if(pStream->ltime != INT64_MIN && pStream->ltime > pStream->stime) {
+    tscWarn(" CQ set stream %s stime=%"PRId64" replace with ltime=%"PRId64" if ltime>0  ", dstTable, pStream->stime, pStream->ltime);
+    pStream->stime = pStream->ltime;
+  }
+
   int64_t starttime = tscGetLaunchTimestamp(pStream);
   pCmd->command = TSDB_SQL_SELECT;
 
@@ -587,7 +596,66 @@ void tscSetStreamDestTable(SSqlStream* pStream, const char* dstTable) {
   pStream->dstTable = dstTable;
 }
 
-TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
+// fetchFp call back
+void fetchFpStreamLastRow(void* param ,TAOS_RES* res, int num) {
+  SSqlStream* pStream = (SSqlStream*)param;
+  SSqlObj* pSql = res;
+  
+  // get row data set to ltime
+  tscSetSqlOwner(pSql);
+  TAOS_ROW row = doSetResultRowData(pSql);
+  if( row && row[0] ) {
+    pStream->ltime = *((int64_t*)row[0]);
+    const char* dstTable = pStream->dstTable? pStream->dstTable: "";
+    tscDebug(" CQ stream table=%s last row time=%"PRId64" .", dstTable, pStream->ltime);
+  }
+  tscClearSqlOwner(pSql);
+
+  // no condition call 
+  tscCreateStream(param, pStream->pSql, TSDB_CODE_SUCCESS);
+  taos_free_result(res);
+}
+
+//  fp callback 
+void fpStreamLastRow(void* param ,TAOS_RES* res, int code) {
+  // check result successful
+  if (code != TSDB_CODE_SUCCESS) {
+    tscCreateStream(param, res, TSDB_CODE_SUCCESS);
+    taos_free_result(res);
+    return ;
+  }
+
+  // asynchronous fetch last row data
+  taos_fetch_rows_a(res, fetchFpStreamLastRow, param);
+}
+
+void cbParseSql(void* param, TAOS_RES* res, int code) {
+  // check result successful
+  SSqlStream* pStream = (SSqlStream*)param;
+  SSqlObj* pSql = pStream->pSql;
+  SSqlCmd* pCmd = &pSql->cmd;
+  if (code != TSDB_CODE_SUCCESS) {
+    pSql->res.code = code;
+    tscDebug("0x%"PRIx64" open stream parse sql failed, sql:%s, reason:%s, code:%s", pSql->self, pSql->sqlstr, pCmd->payload, tstrerror(code));
+    pStream->fp(pStream->param, NULL, NULL);
+    return;
+  }
+
+  // check dstTable valid
+  if(pStream->dstTable == NULL || strlen(pStream->dstTable) == 0) {
+    tscDebug(" cbParseSql dstTable is empty.");
+    tscCreateStream(param, res, code);
+    return ;
+  }
+
+  // query stream last row time async
+  char sql[128] = "";
+  sprintf(sql, "select last_row(*) from %s;", pStream->dstTable); 
+  taos_query_a(pSql->pTscObj, sql, fpStreamLastRow, param);
+  return ;
+}
+
+TAOS_STREAM *taos_open_stream_withname(TAOS *taos, const char* dstTable, const char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
                               int64_t stime, void *param, void (*callback)(void *)) {
   STscObj *pObj = (STscObj *)taos;
   if (pObj == NULL || pObj->signature != pObj) return NULL;
@@ -610,6 +678,7 @@ TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sqlstr, void (*fp)(void *p
     return NULL;
   }
 
+  pStream->ltime = INT64_MIN;
   pStream->stime = stime;
   pStream->fp = fp;
   pStream->callback = callback;
@@ -618,6 +687,7 @@ TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sqlstr, void (*fp)(void *p
   pSql->pStream = pStream;
   pSql->param = pStream;
   pSql->maxRetry = TSDB_MAX_REPLICA;
+  tscSetStreamDestTable(pStream, dstTable);
 
   pSql->sqlstr = calloc(1, strlen(sqlstr) + 1);
   if (pSql->sqlstr == NULL) {
@@ -632,15 +702,17 @@ TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sqlstr, void (*fp)(void *p
   tscDebugL("%p SQL: %s", pSql, pSql->sqlstr);
   tsem_init(&pSql->rspSem, 0, 0);
 
-  pSql->fp = tscCreateStream;
-  pSql->fetchFp = tscCreateStream;
+  pSql->fp      = cbParseSql;
+  pSql->fetchFp = cbParseSql;
 
   registerSqlObj(pSql);
-  
+
   int32_t code = tsParseSql(pSql, true);
   if (code == TSDB_CODE_SUCCESS) {
-    tscCreateStream(pStream, pSql, code);
-  } else if (code != TSDB_CODE_TSC_ACTION_IN_PROGRESS) {
+    cbParseSql(pStream, pSql, code);
+  } else if (code == TSDB_CODE_TSC_ACTION_IN_PROGRESS) {
+     tscDebug(" CQ taso_open_stream IN Process. sql=%s", sqlstr);
+  } else {
     tscError("0x%"PRIx64" open stream failed, sql:%s, code:%s", pSql->self, sqlstr, tstrerror(code));
     taosReleaseRef(tscObjRef, pSql->self);
     free(pStream);
@@ -650,6 +722,11 @@ TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sqlstr, void (*fp)(void *p
   return pStream;
 }
 
+TAOS_STREAM *taos_open_stream(TAOS *taos, const char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
+                              int64_t stime, void *param, void (*callback)(void *)) {  
+  return taos_open_stream_withname(taos, "", sqlstr, fp, stime, param, callback);
+}
+
 void taos_close_stream(TAOS_STREAM *handle) {
   SSqlStream *pStream = (SSqlStream *)handle;
 
diff --git a/src/common/inc/tglobal.h b/src/common/inc/tglobal.h
index 26475834d5aa91a87e6f8e14e86b211d5b68d6d2..1e66ce3f0c55cfedb603a09b1940e503bbc2fc19 100644
--- a/src/common/inc/tglobal.h
+++ b/src/common/inc/tglobal.h
@@ -74,7 +74,7 @@ extern int32_t tsMinSlidingTime;
 extern int32_t tsMinIntervalTime;
 extern int32_t tsMaxStreamComputDelay;
 extern int32_t tsStreamCompStartDelay;
-extern int32_t tsStreamCompRetryDelay;
+extern int32_t tsRetryStreamCompDelay;
 extern float   tsStreamComputDelayRatio;  // the delayed computing ration of the whole time window
 extern int32_t tsProjectExecInterval;
 extern int64_t tsMaxRetentWindow;
diff --git a/src/common/src/tglobal.c b/src/common/src/tglobal.c
index b0f83dc707ebea53c195c1c328f38b329f0560b7..e2237bbee6820a16fbb75e30bf488885ec196fd0 100644
--- a/src/common/src/tglobal.c
+++ b/src/common/src/tglobal.c
@@ -92,7 +92,7 @@ int32_t tsMaxStreamComputDelay = 20000;
 int32_t tsStreamCompStartDelay = 10000;
 
 // the stream computing delay time after executing failed, change accordingly
-int32_t tsStreamCompRetryDelay = 10;
+int32_t tsRetryStreamCompDelay = 10*1000;
 
 // The delayed computing ration. 10% of the whole computing time window by default.
 float tsStreamComputDelayRatio = 0.1f;
@@ -696,7 +696,7 @@ static void doInitGlobalConfig(void) {
   taosInitConfigOption(cfg);
 
   cfg.option = "retryStreamCompDelay";
-  cfg.ptr = &tsStreamCompRetryDelay;
+  cfg.ptr = &tsRetryStreamCompDelay;
   cfg.valType = TAOS_CFG_VTYPE_INT32;
   cfg.cfgType = TSDB_CFG_CTYPE_B_CONFIG | TSDB_CFG_CTYPE_B_SHOW;
   cfg.minValue = 10;
diff --git a/src/cq/src/cqMain.c b/src/cq/src/cqMain.c
index 5d5d5f339eec62db09f4c93acad0cea096c0962d..ee4be02b9004b56c0139b792393d00d9ea6a6f98 100644
--- a/src/cq/src/cqMain.c
+++ b/src/cq/src/cqMain.c
@@ -437,6 +437,10 @@ static void cqProcessCreateTimer(void *param, void *tmrId) {
   taosReleaseRef(cqObjRef, (int64_t)param);
 }
 
+// inner implement in tscStream.c
+TAOS_STREAM *taos_open_stream_withname(TAOS *taos, const char* desName, const char *sqlstr, void (*fp)(void *param, TAOS_RES *, TAOS_ROW row),
+                              int64_t stime, void *param, void (*callback)(void *));
+
 static void cqCreateStream(SCqContext *pContext, SCqObj *pObj) {
   pObj->pContext = pContext;
 
@@ -449,11 +453,10 @@ static void cqCreateStream(SCqContext *pContext, SCqObj *pObj) {
   pObj->tmrId = 0;
 
   if (pObj->pStream == NULL) {
-    pObj->pStream = taos_open_stream(pContext->dbConn, pObj->sqlStr, cqProcessStreamRes, INT64_MIN, (void *)pObj->rid, NULL);
+    pObj->pStream = taos_open_stream_withname(pContext->dbConn, pObj->dstTable, pObj->sqlStr, cqProcessStreamRes, INT64_MIN, (void *)pObj->rid, NULL);
 
     // TODO the pObj->pStream may be released if error happens
     if (pObj->pStream) {
-      tscSetStreamDestTable(pObj->pStream, pObj->dstTable);
       pContext->num++;
       cDebug("vgId:%d, id:%d CQ:%s is opened", pContext->vgId, pObj->tid, pObj->sqlStr);
     } else {
diff --git a/tests/pytest/util/dnodes.py b/tests/pytest/util/dnodes.py
index 6eaf4e18af53eac2b6e3c93749528993d8477e3d..0f71ffd0a37587cc6be895b4b8b168e6b8cfcaf8 100644
--- a/tests/pytest/util/dnodes.py
+++ b/tests/pytest/util/dnodes.py
@@ -432,7 +432,7 @@ class TDDnodes:
         self.simDeployed = False
 
     def init(self, path):
-        psCmd = "ps -ef|grep -w taosd| grep -v grep | awk '{print $2}'"
+        psCmd = "ps -ef|grep -w taosd| grep -v grep| grep -v defunct | awk '{print $2}'"
         processID = subprocess.check_output(psCmd, shell=True).decode("utf-8")
         while(processID):
             killCmd = "kill -TERM %s > /dev/null 2>&1" % processID
@@ -545,14 +545,14 @@ class TDDnodes:
         for i in range(len(self.dnodes)):
             self.dnodes[i].stop()
 
-        psCmd = "ps -ef | grep -w taosd | grep 'root' | grep -v grep | awk '{print $2}'"
+        psCmd = "ps -ef | grep -w taosd | grep 'root' | grep -v grep| grep -v defunct | awk '{print $2}'"
         processID = subprocess.check_output(psCmd, shell=True).decode("utf-8")
         if processID:
             cmd = "sudo systemctl stop taosd"
             os.system(cmd)
         # if os.system(cmd) != 0 :
         # tdLog.exit(cmd)
-        psCmd = "ps -ef|grep -w taosd| grep -v grep | awk '{print $2}'"
+        psCmd = "ps -ef|grep -w taosd| grep -v grep| grep -v defunct | awk '{print $2}'"
         processID = subprocess.check_output(psCmd, shell=True).decode("utf-8")
         while(processID):
             killCmd = "kill -TERM %s > /dev/null 2>&1" % processID