fix(stream): fix error in checkpointing.

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

@@ -637,6 +637,12 @@ static int32_t doScheduleStream(SStreamObj* pStream, SMnode* pMnode, SQueryPlan*
       return code;
     }
 
+    SArray* pSinkTaskList = taosArrayGetP(pStream->tasks, 0);
+    for(int32_t i = 0; i < taosArrayGetSize(pSinkTaskList); ++i) {
+      SStreamTask* pSinkTask = taosArrayGetP(pSinkTaskList, i);
+      setEpToDownstreamTask(pAggTask, pSinkTask);
+    }
+
     // source level
     return addSourceTasksForMultiLevelStream(pMnode, pPlan, pStream, pAggTask, pHAggTask, nextWindowSkey);
   } else if (numOfPlanLevel == 1) {

source/libs/stream/src/streamCheckpoint.c

@@ -158,8 +158,6 @@ static int32_t streamTaskDispatchCheckpointMsg(SStreamTask* pTask, uint64_t chec
       SVgroupInfo* pVgInfo = taosArrayGet(vgInfo, i);
       req.downstreamNodeId = pVgInfo->vgId;
       req.downstreamTaskId = pVgInfo->taskId;
-      qDebug("s-task:%s (vgId:%d) checkpoint to task:0x%x (vgId:%d) (shuffle), idx:%d", pTask->id.idStr,
-             pTask->info.nodeId, req.downstreamTaskId, req.downstreamNodeId, i);
       streamDispatchCheckpointMsg(pTask, &req, pVgInfo->vgId, &pVgInfo->epSet);
     }
   } else { // no need to dispatch msg to downstream task

source/libs/stream/src/streamDispatch.c

@@ -444,8 +444,8 @@ int32_t streamDispatchCheckpointMsg(SStreamTask* pTask, const SStreamCheckpointR
   tEncoderClear(&encoder);
 
   initRpcMsg(&msg,TDMT_STREAM_TASK_CHECKPOINT, buf, tlen + sizeof(SMsgHead));
-  qDebug("s-task:%s (level:%d) dispatch checkpoint msg to s-task:%" PRIx64 ":0x%x (vgId:%d)", pTask->id.idStr,
-         pTask->info.taskLevel, pReq->streamId, pReq->downstreamTaskId, nodeId);
+  qDebug("s-task:%s (level:%d, vgId:5d) dispatch checkpoint msg to s-task:%" PRIx64 ":0x%x (vgId:%d)", pTask->id.idStr,
+         pTask->info.taskLevel, pTask->info.nodeId, pReq->streamId, pReq->downstreamTaskId, nodeId);
 
   tmsgSendReq(pEpSet, &msg);
   return 0;