Fix a bug that MPP tasks may leak threads forever (#4241) (#4644)

close #4238
pingcap · Apr 14, 2022 · 92566c4 · 92566c4
1 parent 98ae1a4
commit 92566c4
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/dbms/src/Flash/Mpp/MPPHandler.h b/dbms/src/Flash/Mpp/MPPHandler.h
@@ -129,6 +129,8 @@ struct MPPTunnel
         {
             throw Exception("has connected");
         }
+        if (finished)
+            throw Exception("has finished");
         LOG_DEBUG(log, "ready to connect");
         connected = true;
         writer = writer_;