refactor: add some logs.

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

@@ -880,6 +880,9 @@ int32_t tqProcessTaskRecover2Req(STQ* pTq, int64_t sversion, char* msg, int32_t
   }
 
   // do recovery step 2
+  int64_t st = taosGetTimestampMs();
+  tqDebug("s-task:%s start step2 recover, ts:%"PRId64, pTask->id.idStr, st);
+
   code = streamSourceRecoverScanStep2(pTask, sversion);
   if (code < 0) {
     streamMetaReleaseTask(pTq->pStreamMeta, pTask);
@@ -905,6 +908,9 @@ int32_t tqProcessTaskRecover2Req(STQ* pTq, int64_t sversion, char* msg, int32_t
     return -1;
   }
 
+  double el = (taosGetTimestampMs() - st)/ 1000.0;
+  tqDebug("s-task:%s step2 recover finished, el:%.2f s", pTask->id.idStr, el);
+
   // dispatch recover finish req to all related downstream task
   code = streamDispatchRecoverFinishReq(pTask);
   if (code < 0) {

source/libs/stream/src/stream.c

@@ -256,6 +256,7 @@ int32_t streamProcessDispatchRsp(SStreamTask* pTask, SStreamDispatchRsp* pRsp, i
     ASSERT(0);
     return 0;
   }
+
   // continue dispatch
   streamDispatch(pTask);
   return 0;

source/libs/stream/src/streamDispatch.c

@@ -261,6 +261,7 @@ int32_t streamDispatchOneRecoverFinishReq(SStreamTask* pTask, const SStreamRecov
 
   buf = rpcMallocCont(sizeof(SMsgHead) + tlen);
   if (buf == NULL) {
+    terrno = TSDB_CODE_OUT_OF_MEMORY;
     return -1;
   }
 
@@ -512,6 +513,7 @@ int32_t streamDispatch(SStreamTask* pTask) {
   int8_t old =
       atomic_val_compare_exchange_8(&pTask->outputStatus, TASK_OUTPUT_STATUS__NORMAL, TASK_OUTPUT_STATUS__WAIT);
   if (old != TASK_OUTPUT_STATUS__NORMAL) {
+    qDebug("s-task:%s task wait for dispatch rsp, not dispatch now", pTask->id.idStr);
     return 0;
   }
 

source/libs/stream/src/streamRecover.c

@@ -224,8 +224,8 @@ int32_t streamDispatchRecoverFinishReq(SStreamTask* pTask) {
 
   // serialize
   if (pTask->outputType == TASK_OUTPUT__FIXED_DISPATCH) {
-    qDebug("s-task:%s send recover finish msg to downstream (fix-dispatch) to taskId:%d", pTask->id.idStr,
-           pTask->fixedEpDispatcher.taskId);
+    qDebug("s-task:%s send recover finish msg to downstream (fix-dispatch) to taskId:%d, status:%d", pTask->id.idStr,
+           pTask->fixedEpDispatcher.taskId, pTask->status.taskStatus);
 
     req.taskId = pTask->fixedEpDispatcher.taskId;
     streamDispatchOneRecoverFinishReq(pTask, &req, pTask->fixedEpDispatcher.nodeId, &pTask->fixedEpDispatcher.epSet);