diff --git a/include/libs/stream/tstream.h b/include/libs/stream/tstream.h
index 5e647c0f9e..03cf2cc21e 100644
--- a/include/libs/stream/tstream.h
+++ b/include/libs/stream/tstream.h
@@ -384,8 +384,8 @@ typedef struct SSinkRecorder {
 
 typedef struct STaskExecStatisInfo {
   int64_t       created;
-  int64_t       init;
-  int64_t       start;
+  int64_t       checkTs;
+  int64_t       readyTs;
   int64_t       startCheckpointId;
   int64_t       startCheckpointVer;
 
@@ -478,7 +478,7 @@ typedef struct STaskStartInfo {
   int64_t            startTs;
   int64_t            readyTs;
   int32_t            tasksWillRestart;
-  int32_t            taskStarting;    // restart flag, sentinel to guard the restart procedure.
+  int32_t            startAllTasks;    // restart flag, sentinel to guard the restart procedure.
   SHashObj*          pReadyTaskSet;   // tasks that are all ready for running stream processing
   SHashObj*          pFailedTaskSet;  // tasks that are done the check downstream process, may be successful or failed
   int64_t            elapsedTime;
diff --git a/source/dnode/vnode/src/tq/tqSink.c b/source/dnode/vnode/src/tq/tqSink.c
index f7003ca41b..6d276c11bc 100644
--- a/source/dnode/vnode/src/tq/tqSink.c
+++ b/source/dnode/vnode/src/tq/tqSink.c
@@ -309,7 +309,7 @@ int32_t doBuildAndSendSubmitMsg(SVnode* pVnode, SStreamTask* pTask, SSubmitReq2*
 
   pRec->numOfSubmit += 1;
   if ((pRec->numOfSubmit % 1000) == 0) {
-    double el = (taosGetTimestampMs() - pTask->execInfo.start) / 1000.0;
+    double el = (taosGetTimestampMs() - pTask->execInfo.readyTs) / 1000.0;
     tqInfo("s-task:%s vgId:%d write %" PRId64 " blocks (%" PRId64 " rows) in %" PRId64
            " submit into dst table, %.2fMiB duration:%.2f Sec.",
            pTask->id.idStr, vgId, pRec->numOfBlocks, pRec->numOfRows, pRec->numOfSubmit, SIZE_IN_MiB(pRec->dataSize),
diff --git a/source/dnode/vnode/src/tqCommon/tqCommon.c b/source/dnode/vnode/src/tqCommon/tqCommon.c
index f2b90606d9..03553dfc2e 100644
--- a/source/dnode/vnode/src/tqCommon/tqCommon.c
+++ b/source/dnode/vnode/src/tqCommon/tqCommon.c
@@ -455,8 +455,8 @@ int32_t tqStreamTaskProcessCheckReq(SStreamMeta* pMeta, SRpcMsg* pMsg) {
   return streamSendCheckRsp(pMeta, &req, &rsp, &pMsg->info, taskId);
 }
 
-static void setParam(SStreamTask* pTask, int64_t* initTs, bool* hasHTask, STaskId* pId) {
-  *initTs = pTask->execInfo.init;
+static void setParam(SStreamTask* pTask, int64_t* startCheckTs, bool* hasHTask, STaskId* pId) {
+  *startCheckTs = pTask->execInfo.checkTs;
 
   if (HAS_RELATED_FILLHISTORY_TASK(pTask)) {
     *hasHTask = true;
@@ -525,6 +525,7 @@ int32_t tqStreamTaskProcessCheckRsp(SStreamMeta* pMeta, SRpcMsg* pMsg, bool isLe
   if (pTask == NULL) {
     streamMetaRLock(pMeta);
 
+    // let's try to find this task in hashmap
     SStreamTask** ppTask = taosHashGet(pMeta->pTasksMap, &id, sizeof(id));
     if (ppTask != NULL) {
       setParam(*ppTask, &initTs, &hasHistoryTask, &fId);
@@ -533,7 +534,7 @@ int32_t tqStreamTaskProcessCheckRsp(SStreamMeta* pMeta, SRpcMsg* pMsg, bool isLe
       if (hasHistoryTask) {
         streamMetaAddTaskLaunchResult(pMeta, fId.streamId, fId.taskId, initTs, now, false);
       }
-    } else {
+    } else {  // not exist even in the hash map of meta, forget it
       streamMetaRUnLock(pMeta);
     }
 
@@ -749,7 +750,7 @@ static int32_t restartStreamTasks(SStreamMeta* pMeta, bool isLeader) {
   int64_t st = taosGetTimestampMs();
 
   streamMetaWLock(pMeta);
-  if (pMeta->startInfo.taskStarting == 1) {
+  if (pMeta->startInfo.startAllTasks == 1) {
     pMeta->startInfo.restartCount += 1;
     tqDebug("vgId:%d in start tasks procedure, inc restartCounter by 1, remaining restart:%d", vgId,
             pMeta->startInfo.restartCount);
@@ -757,7 +758,7 @@ static int32_t restartStreamTasks(SStreamMeta* pMeta, bool isLeader) {
     return TSDB_CODE_SUCCESS;
   }
 
-  pMeta->startInfo.taskStarting = 1;
+  pMeta->startInfo.startAllTasks = 1;
   streamMetaWUnLock(pMeta);
 
   terrno = 0;
@@ -873,7 +874,7 @@ int32_t tqStartTaskCompleteCallback(SStreamMeta* pMeta) {
   bool            scanWal = false;
 
   streamMetaWLock(pMeta);
-  if (pStartInfo->taskStarting == 1) {
+  if (pStartInfo->startAllTasks == 1) {
     tqDebug("vgId:%d already in start tasks procedure in other thread, restartCounter:%d, do nothing", vgId,
             pMeta->startInfo.restartCount);
   } else {  // not in starting procedure
diff --git a/source/dnode/vnode/src/vnd/vnodeSync.c b/source/dnode/vnode/src/vnd/vnodeSync.c
index 72cf8295dc..166a230c76 100644
--- a/source/dnode/vnode/src/vnd/vnodeSync.c
+++ b/source/dnode/vnode/src/vnd/vnodeSync.c
@@ -579,12 +579,12 @@ static void vnodeRestoreFinish(const SSyncFSM *pFsm, const SyncIndex commitIdx)
       vInfo("vgId:%d sync restore finished, start to launch stream task(s)", pVnode->config.vgId);
       int32_t numOfTasks = tqStreamTasksGetTotalNum(pMeta);
       if (numOfTasks > 0) {
-        if (pMeta->startInfo.taskStarting == 1) {
+        if (pMeta->startInfo.startAllTasks == 1) {
           pMeta->startInfo.restartCount += 1;
           tqDebug("vgId:%d in start tasks procedure, inc restartCounter by 1, remaining restart:%d", vgId,
                   pMeta->startInfo.restartCount);
         } else {
-          pMeta->startInfo.taskStarting = 1;
+          pMeta->startInfo.startAllTasks = 1;
 
           streamMetaWUnLock(pMeta);
           tqStreamTaskStartAsync(pMeta, &pVnode->msgCb, false);
diff --git a/source/libs/stream/src/streamMeta.c b/source/libs/stream/src/streamMeta.c
index e3a0eef071..3c4e6f0101 100644
--- a/source/libs/stream/src/streamMeta.c
+++ b/source/libs/stream/src/streamMeta.c
@@ -1119,7 +1119,7 @@ static int32_t metaHeartbeatToMnodeImpl(SStreamMeta* pMeta) {
         .stage = pMeta->stage,
 
         .inputQUsed = SIZE_IN_MiB(streamQueueGetItemSize((*pTask)->inputq.queue)),
-        .startTime = (*pTask)->execInfo.start,
+        .startTime = (*pTask)->execInfo.readyTs,
         .checkpointInfo.latestId = (*pTask)->chkInfo.checkpointId,
         .checkpointInfo.latestVer = (*pTask)->chkInfo.checkpointVer,
         .checkpointInfo.latestTime = (*pTask)->chkInfo.checkpointTime,
@@ -1329,7 +1329,7 @@ void streamMetaResetStartInfo(STaskStartInfo* pStartInfo) {
   pStartInfo->readyTs = 0;
 
   // reset the sentinel flag value to be 0
-  pStartInfo->taskStarting = 0;
+  pStartInfo->startAllTasks = 0;
 }
 
 void streamMetaRLock(SStreamMeta* pMeta) {
@@ -1496,7 +1496,7 @@ int32_t streamMetaStartAllTasks(SStreamMeta* pMeta) {
         streamLaunchFillHistoryTask(pTask);
       }
 
-      streamMetaAddTaskLaunchResult(pMeta, pTaskId->streamId, pTaskId->taskId, pInfo->init, pInfo->start, true);
+      streamMetaAddTaskLaunchResult(pMeta, pTaskId->streamId, pTaskId->taskId, pInfo->checkTs, pInfo->readyTs, true);
       streamMetaReleaseTask(pMeta, pTask);
       continue;
     }
@@ -1506,10 +1506,10 @@ int32_t streamMetaStartAllTasks(SStreamMeta* pMeta) {
       stError("vgId:%d failed to handle event:%d", pMeta->vgId, TASK_EVENT_INIT);
       code = ret;
 
-      streamMetaAddTaskLaunchResult(pMeta, pTaskId->streamId, pTaskId->taskId, pInfo->init, pInfo->start, false);
+      streamMetaAddTaskLaunchResult(pMeta, pTaskId->streamId, pTaskId->taskId, pInfo->checkTs, pInfo->readyTs, false);
       if (HAS_RELATED_FILLHISTORY_TASK(pTask)) {
         STaskId* pId = &pTask->hTaskInfo.id;
-        streamMetaAddTaskLaunchResult(pMeta, pId->streamId, pId->taskId, pInfo->init, pInfo->start, false);
+        streamMetaAddTaskLaunchResult(pMeta, pId->streamId, pId->taskId, pInfo->checkTs, pInfo->readyTs, false);
       }
     }
 
@@ -1601,10 +1601,10 @@ int32_t streamMetaStartOneTask(SStreamMeta* pMeta, int64_t streamId, int32_t tas
   if (ret != TSDB_CODE_SUCCESS) {
     stError("vgId:%d failed to handle event:%d", pMeta->vgId, TASK_EVENT_INIT);
 
-    streamMetaAddTaskLaunchResult(pMeta, streamId, taskId, pInfo->init, pInfo->start, false);
+    streamMetaAddTaskLaunchResult(pMeta, streamId, taskId, pInfo->checkTs, pInfo->readyTs, false);
     if (HAS_RELATED_FILLHISTORY_TASK(pTask)) {
       STaskId* pId = &pTask->hTaskInfo.id;
-      streamMetaAddTaskLaunchResult(pMeta, pId->streamId, pId->taskId, pInfo->init, pInfo->start, false);
+      streamMetaAddTaskLaunchResult(pMeta, pId->streamId, pId->taskId, pInfo->checkTs, pInfo->readyTs, false);
     }
   }
 
@@ -1641,7 +1641,7 @@ int32_t streamMetaAddTaskLaunchResult(SStreamMeta* pMeta, int64_t streamId, int3
 
   streamMetaWLock(pMeta);
 
-  if (pStartInfo->taskStarting != 1) {
+  if (pStartInfo->startAllTasks != 1) {
     int64_t el = endTs - startTs;
     qDebug("vgId:%d not start all task(s), not record status, s-task:0x%x launch succ:%d elapsed time:%" PRId64 "ms",
            pMeta->vgId, taskId, ready, el);
diff --git a/source/libs/stream/src/streamStart.c b/source/libs/stream/src/streamStart.c
index 276997e5a8..53904788eb 100644
--- a/source/libs/stream/src/streamStart.c
+++ b/source/libs/stream/src/streamStart.c
@@ -56,8 +56,8 @@ int32_t streamTaskSetReady(SStreamTask* pTask) {
   ASSERT(pTask->status.downstreamReady == 0);
   pTask->status.downstreamReady = 1;
 
-  pTask->execInfo.start = taosGetTimestampMs();
-  int64_t el = (pTask->execInfo.start - pTask->execInfo.init);
+  pTask->execInfo.readyTs = taosGetTimestampMs();
+  int64_t el = (pTask->execInfo.readyTs - pTask->execInfo.checkTs);
   stDebug("s-task:%s all %d downstream ready, init completed, elapsed time:%" PRId64 "ms, task status:%s",
           pTask->id.idStr, numOfDowns, el, p->name);
   return TSDB_CODE_SUCCESS;
@@ -391,9 +391,9 @@ void doProcessDownstreamReadyRsp(SStreamTask* pTask) {
   EStreamTaskEvent event = (pTask->info.fillHistory == 0) ? TASK_EVENT_INIT : TASK_EVENT_INIT_SCANHIST;
   streamTaskOnHandleEventSuccess(pTask->status.pSM, event, NULL, NULL);
 
-  int64_t initTs = pTask->execInfo.init;
-  int64_t startTs = pTask->execInfo.start;
-  streamMetaAddTaskLaunchResult(pTask->pMeta, pTask->id.streamId, pTask->id.taskId, initTs, startTs, true);
+  int64_t checkTs = pTask->execInfo.checkTs;
+  int64_t readyTs = pTask->execInfo.readyTs;
+  streamMetaAddTaskLaunchResult(pTask->pMeta, pTask->id.streamId, pTask->id.taskId, checkTs, readyTs, true);
 
   if (pTask->status.taskStatus == TASK_STATUS__HALT) {
     ASSERT(HAS_RELATED_FILLHISTORY_TASK(pTask) && (pTask->info.fillHistory == 0));
@@ -498,7 +498,7 @@ int32_t streamProcessCheckRsp(SStreamTask* pTask, const SStreamTaskCheckRsp* pRs
         addIntoNodeUpdateList(pTask, pRsp->downstreamNodeId);
       }
 
-      int32_t startTs = pTask->execInfo.init;
+      int32_t startTs = pTask->execInfo.checkTs;
       int64_t now = taosGetTimestampMs();
       streamMetaAddTaskLaunchResult(pTask->pMeta, pTask->id.streamId, pTask->id.taskId, startTs, now, false);
 
@@ -603,13 +603,13 @@ static void checkFillhistoryTaskStatus(SStreamTask* pTask, SStreamTask* pHTask)
   SDataRange* pRange = &pHTask->dataRange;
 
   // the query version range should be limited to the already processed data
-  pHTask->execInfo.init = taosGetTimestampMs();
+  pHTask->execInfo.checkTs = taosGetTimestampMs();
 
   if (pTask->info.taskLevel == TASK_LEVEL__SOURCE) {
     stDebug("s-task:%s set the launch condition for fill-history s-task:%s, window:%" PRId64 " - %" PRId64
             " verRange:%" PRId64 " - %" PRId64 ", init:%" PRId64,
             pTask->id.idStr, pHTask->id.idStr, pRange->window.skey, pRange->window.ekey, pRange->range.minVer,
-            pRange->range.maxVer, pHTask->execInfo.init);
+            pRange->range.maxVer, pHTask->execInfo.checkTs);
   } else {
     stDebug("s-task:%s no fill-history condition for non-source task:%s", pTask->id.idStr, pHTask->id.idStr);
   }
@@ -767,8 +767,7 @@ static int32_t launchNotBuiltFillHistoryTask(SStreamTask* pTask) {
   SLaunchHTaskInfo* pInfo = createHTaskLaunchInfo(pMeta, pTask->id.streamId, pTask->id.taskId, hStreamId, hTaskId);
   if (pInfo == NULL) {
     stError("s-task:%s failed to launch related fill-history task, since Out Of Memory", idStr);
-
-    streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->init, pExecInfo->start, false);
+    streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->checkTs, pExecInfo->readyTs, false);
     return terrno;
   }
 
@@ -785,7 +784,7 @@ static int32_t launchNotBuiltFillHistoryTask(SStreamTask* pTask) {
       stError("s-task:%s failed to start timer, related fill-history task not launched, ref:%d", idStr, ref);
 
       taosMemoryFree(pInfo);
-      streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->init, pExecInfo->start, false);
+      streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->checkTs, pExecInfo->readyTs, false);
       return terrno;
     }
 
@@ -816,7 +815,7 @@ int32_t streamLaunchFillHistoryTask(SStreamTask* pTask) {
     stDebug("s-task:%s not launch related fill-history task:0x%" PRIx64 "-0x%x, status:%s", idStr, hStreamId, hTaskId,
             pStatus->name);
 
-    streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->init, pExecInfo->start, false);
+    streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->checkTs, pExecInfo->readyTs, false);
     return -1;  // todo set the correct error code
   }
 
@@ -831,11 +830,11 @@ int32_t streamLaunchFillHistoryTask(SStreamTask* pTask) {
     SStreamTask* pHisTask = streamMetaAcquireTask(pMeta, hStreamId, hTaskId);
     if (pHisTask == NULL) {
       stDebug("s-task:%s failed acquire and start fill-history task, it may have been dropped/stopped", idStr);
-      streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->init, pExecInfo->start, false);
+      streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->checkTs, pExecInfo->readyTs, false);
     } else {
       if (pHisTask->status.downstreamReady == 1) {  // it's ready now, do nothing
         stDebug("s-task:%s fill-history task is ready, no need to check downstream", pHisTask->id.idStr);
-        streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->init, pExecInfo->start, true);
+        streamMetaAddTaskLaunchResult(pMeta, hStreamId, hTaskId, pExecInfo->checkTs, pExecInfo->readyTs, true);
       } else {  // exist, but not ready, continue check downstream task status
         checkFillhistoryTaskStatus(pTask, pHisTask);
       }
diff --git a/source/libs/stream/src/streamTask.c b/source/libs/stream/src/streamTask.c
index 7badbfa9f3..fdcf9da9af 100644
--- a/source/libs/stream/src/streamTask.c
+++ b/source/libs/stream/src/streamTask.c
@@ -365,8 +365,9 @@ void tFreeStreamTask(SStreamTask* pTask) {
   stDebug("s-task:0x%x task exec summary: create:%" PRId64 ", init:%" PRId64 ", start:%" PRId64
           ", updateCount:%d latestUpdate:%" PRId64 ", latestCheckPoint:%" PRId64 ", ver:%" PRId64
           " nextProcessVer:%" PRId64 ", checkpointCount:%d",
-          taskId, pStatis->created, pStatis->init, pStatis->start, pStatis->updateCount, pStatis->latestUpdateTs,
-          pCkInfo->checkpointId, pCkInfo->checkpointVer, pCkInfo->nextProcessVer, pStatis->checkpoint);
+          taskId, pStatis->created, pStatis->checkTs, pStatis->readyTs, pStatis->updateCount,
+          pStatis->latestUpdateTs, pCkInfo->checkpointId, pCkInfo->checkpointVer, pCkInfo->nextProcessVer,
+          pStatis->checkpoint);
 
   // remove the ref by timer
   while (pTask->status.timerActive > 0) {
diff --git a/source/libs/stream/src/streamTaskSm.c b/source/libs/stream/src/streamTaskSm.c
index cfa94209f6..c16598f84c 100644
--- a/source/libs/stream/src/streamTaskSm.c
+++ b/source/libs/stream/src/streamTaskSm.c
@@ -80,10 +80,10 @@ static int32_t attachWaitedEvent(SStreamTask* pTask, SFutureHandleEventInfo* pEv
 }
 
 int32_t streamTaskInitStatus(SStreamTask* pTask) {
-  pTask->execInfo.init = taosGetTimestampMs();
-
+  pTask->execInfo.checkTs = taosGetTimestampMs();
   stDebug("s-task:%s start init, and check downstream tasks, set the init ts:%" PRId64, pTask->id.idStr,
-          pTask->execInfo.init);
+          pTask->execInfo.checkTs);
+
   streamTaskCheckDownstream(pTask);
   return 0;
 }