fix(stream): check error.

source/libs/stream/src/streamDispatch.c

@@ -730,10 +730,14 @@ int32_t streamProcessDispatchRsp(SStreamTask* pTask, SStreamDispatchRsp* pRsp, i
     // flag. here we need to retry dispatch this message to downstream task immediately. handle the case the failure
     // happened too fast.
     // todo handle the shuffle dispatch failure
-    qError("s-task:%s failed to dispatch msg to task:0x%x, code:%s, retry cnt:%d", id, pRsp->downstreamTaskId,
-           tstrerror(code), ++pTask->msgInfo.retryCount);
-    int32_t ret = doDispatchAllBlocks(pTask, pTask->msgInfo.pData);
-    if (ret != TSDB_CODE_SUCCESS) {
+    if (code == TSDB_CODE_STREAM_TASK_NOT_EXIST) { // destination task does not exist, not retry anymore
+      qWarn("s-task:%s failed to dispatch msg to task:0x%x, no retry, since it is destroyed already", id);
+    } else {
+      qError("s-task:%s failed to dispatch msg to task:0x%x, code:%s, retry cnt:%d", id, pRsp->downstreamTaskId,
+             tstrerror(code), ++pTask->msgInfo.retryCount);
+      int32_t ret = doDispatchAllBlocks(pTask, pTask->msgInfo.pData);
+      if (ret != TSDB_CODE_SUCCESS) {
+      }
     }
 
     return TSDB_CODE_SUCCESS;