fix(stream): set downstream task ready state.

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

@@ -1137,14 +1137,15 @@ int32_t tqProcessTaskScanHistory(STQ* pTq, SRpcMsg* pMsg) {
       // wait for the stream task get ready for scan history data
       while (((pStreamTask->status.downstreamReady == 0) && (pStreamTask->status.taskStatus != TASK_STATUS__STOP)) ||
              pStreamTask->status.taskStatus == TASK_STATUS__SCAN_HISTORY) {
-        tqDebug("s-task:%s level:%d related stream task:%s not ready for halt, wait for it and recheck in 100ms", pId,
-                pTask->info.taskLevel, pId);
+        tqDebug(
+            "s-task:%s level:%d related stream task:%s(status:%s) not ready for halt, wait for it and recheck in 100ms",
+            pId, pTask->info.taskLevel, pStreamTask->id.idStr, streamGetTaskStatusStr(pStreamTask->status.taskStatus));
         taosMsleep(100);
       }
 
       // now we can stop the stream task execution
       pStreamTask->status.taskStatus = TASK_STATUS__HALT;
-      tqDebug("s-task:%s level:%d status is set to halt by history scan task:%s", pId,
+      tqDebug("s-task:%s level:%d status is set to halt by history scan task:%s", pStreamTask->id.idStr,
               pStreamTask->info.taskLevel, pId);
 
       // if it's an source task, extract the last version in wal.

source/libs/stream/src/streamRecover.c

@@ -201,6 +201,7 @@ int32_t streamProcessCheckRsp(SStreamTask* pTask, const SStreamTaskCheckRsp* pRs
       if (left == 0) {
         taosArrayDestroy(pTask->checkReqIds);
         pTask->checkReqIds = NULL;
+        pTask->status.downstreamReady = 1;
 
         if (pTask->status.taskStatus == TASK_STATUS__SCAN_HISTORY) {
           qDebug("s-task:%s all %d downstream tasks are ready, now enter into scan-history-data stage, status:%s", id,