refactor: do some internal refactor.

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

@@ -1322,12 +1322,13 @@ int32_t tqProcessTaskScanHistoryFinishRsp(STQ* pTq, SRpcMsg* pMsg) {
     return -1;
   }
 
-  tqDebug("s-task:%s scan-history finish rsp received from task:0x%x", pTask->id.idStr, req.downstreamId);
+  tqDebug("s-task:%s scan-history finish rsp received from downstream task:0x%x", pTask->id.idStr, req.downstreamId);
 
   int32_t remain = atomic_sub_fetch_32(&pTask->notReadyTasks, 1);
   if (remain > 0) {
     tqDebug("s-task:%s remain:%d not send finish rsp", pTask->id.idStr, remain);
   } else {
+    tqDebug("s-task:%s all downstream tasks rsp scan-history completed msg", pTask->id.idStr);
     streamProcessScanHistoryFinishRsp(pTask);
   }
 

source/libs/stream/src/streamRecover.c

@@ -344,7 +344,7 @@ int32_t streamDispatchScanHistoryFinishMsg(SStreamTask* pTask) {
     int32_t numOfVgs = taosArrayGetSize(vgInfo);
     pTask->notReadyTasks = numOfVgs;
 
-    qDebug("s-task:%s send scan-history-data complete msg to downstream (shuffle-dispatch) %d tasks, status:%s", pTask->id.idStr,
+    qDebug("s-task:%s send scan-history data complete msg to downstream (shuffle-dispatch) %d tasks, status:%s", pTask->id.idStr,
            numOfVgs, streamGetTaskStatusStr(pTask->status.taskStatus));
     for (int32_t i = 0; i < numOfVgs; i++) {
       SVgroupInfo* pVgInfo = taosArrayGet(vgInfo, i);
@@ -352,7 +352,7 @@ int32_t streamDispatchScanHistoryFinishMsg(SStreamTask* pTask) {
       streamDoDispatchScanHistoryFinishMsg(pTask, &req, pVgInfo->vgId, &pVgInfo->epSet);
     }
   } else {
-    qDebug("s-task:%s no downstream tasks, invoke history finish rsp directly", pTask->id.idStr);
+    qDebug("s-task:%s no downstream tasks, invoke scan-history finish rsp directly", pTask->id.idStr);
     streamProcessScanHistoryFinishRsp(pTask);
   }