fix(stream): fix race condition.

include/libs/stream/tstream.h

@@ -309,6 +309,7 @@ struct SStreamTask {
   STaskExec        exec;
   SHistDataRange   dataRange;
   SStreamId        historyTaskId;
+  SStreamId        streamTaskId;
   SArray*          pUpstreamEpInfoList;  // SArray<SStreamChildEpInfo*>, // children info
   int32_t          nextCheckId;
   SArray*          checkpointInfo;  // SArray<SStreamCheckpointInfo>

source/dnode/mnode/impl/src/mndScheduler.c

@@ -319,6 +319,10 @@ static void setHTasksId(SArray* pTaskList, const SArray* pHTaskList) {
 
     (*pStreamTask)->historyTaskId.taskId = (*pHTask)->id.taskId;
     (*pStreamTask)->historyTaskId.streamId = (*pHTask)->id.streamId;
+
+    (*pHTask)->streamTaskId.taskId = (*pStreamTask)->id.taskId;
+    (*pHTask)->streamTaskId.streamId = (*pStreamTask)->id.streamId;
+
     mDebug("s-task:0x%x related history task:0x%x", (*pStreamTask)->id.taskId, (*pHTask)->id.taskId);
   }
 }

source/dnode/vnode/src/tq/tq.c

@@ -1088,7 +1088,7 @@ int32_t tqProcessTaskRecover1Req(STQ* pTq, SRpcMsg* pMsg) {
   }
 
   // do recovery step 1
-  tqDebug("s-task:%s start non-blocking recover stage(step 1) scan", pTask->id.idStr);
+  tqDebug("s-task:%s start history data scan stage(step 1)", pTask->id.idStr);
   int64_t st = taosGetTimestampMs();
 
   streamSourceRecoverScanStep1(pTask);
@@ -1100,10 +1100,31 @@ int32_t tqProcessTaskRecover1Req(STQ* pTq, SRpcMsg* pMsg) {
   }
 
   double el = (taosGetTimestampMs() - st) / 1000.0;
-  tqDebug("s-task:%s history scan stage(step 1) ended, elapsed time:%.2fs", pTask->id.idStr, el);
+  tqDebug("s-task:%s history data scan stage(step 1) ended, elapsed time:%.2fs", pTask->id.idStr, el);
 
-  if (pTask->info.fillHistory) {
-    // todo transfer the executor status, and then destroy this stream task
+  if (pTask->info.fillHistory) {/*
+    // 1. stop the related stream task, get the current scan wal version of stream task, ver1.
+    SStreamTask* pStreamTask = streamMetaAcquireTask(pMeta, pTask->streamTaskId.taskId);
+    if (pStreamTask == NULL) {
+      // todo handle error
+    }
+
+    pStreamTask->status.taskStatus = TASK_STATUS__PAUSE;
+
+
+    // if it's an source task, extract the last version in wal.
+
+    // 2. wait for downstream tasks to completed
+
+
+    // 3. do secondary scan of the history data scan, the time window remain, and the version range is updated to [pTask->dataRange.range.maxVer, ver1]
+
+
+    // 4. 1) transfer the ownership of executor state, 2) update the scan data range for source task.
+
+
+    // 5. resume the related stream task.
+*/
   } else {
     // todo update the chkInfo version for current task.
     // this task has an associated history stream task, so we need to scan wal from the end version of

source/libs/stream/src/stream.c

@@ -264,13 +264,12 @@ int32_t streamProcessDispatchRsp(SStreamTask* pTask, SStreamDispatchRsp* pRsp, i
   }
 
   pTask->msgInfo.retryCount = 0;
-  int8_t old = atomic_exchange_8(&pTask->outputStatus, pRsp->inputStatus);
-  ASSERT(old == TASK_OUTPUT_STATUS__WAIT);
+  ASSERT(pTask->outputStatus == TASK_OUTPUT_STATUS__WAIT);
 
   qDebug("s-task:%s output status is set to:%d", pTask->id.idStr, pTask->outputStatus);
 
   // the input queue of the (down stream) task that receive the output data is full, so the TASK_INPUT_STATUS_BLOCKED is rsp
-  if (pTask->outputStatus == TASK_INPUT_STATUS__BLOCKED) {
+  if (pRsp->inputStatus == TASK_INPUT_STATUS__BLOCKED) {
     pTask->msgInfo.blockingTs = taosGetTimestampMs(); // record the blocking start time
 
     int32_t waitDuration = 300; //  300 ms

source/libs/stream/src/streamExec.c

@@ -440,8 +440,8 @@ int32_t streamExecForAll(SStreamTask* pTask) {
     streamTaskExecImpl(pTask, pInput, &resSize, &totalBlocks);
 
     double  el = (taosGetTimestampMs() - st) / 1000.0;
-    qDebug("s-task:%s batch of input blocks exec end, elapsed time:%.2fs, result size:%.2fMiB, numOfBlocks:%d",
-           id, el, resSize / 1048576.0, totalBlocks);
+    qDebug("s-task:%s batch of (%d)input blocks exec end, elapsed time:%.2fs, result size:%.2fMiB, numOfBlocks:%d",
+           id, batchSize, el, resSize / 1048576.0, totalBlocks);
     streamFreeQitem(pInput);
   }