juzi214032 commented on a change in pull request #9613:
URL: https://github.com/apache/dubbo/pull/9613#discussion_r790289366



##########
File path: 
dubbo-cluster/src/main/java/org/apache/dubbo/rpc/cluster/support/ForkingClusterInvoker.java
##########
@@ -96,7 +93,7 @@ public Result doInvoke(final Invocation invocation, 
List<Invoker<T>> invokers, L
                 });
             }
             try {
-                Object ret = ref.poll(timeout, TimeUnit.MILLISECONDS);
+                Object ret = ref.poll(Integer.MAX_VALUE, 
TimeUnit.MILLISECONDS);

Review comment:
       I don't think it's reasonable to make the queue wait indefinitely, which 
may generate some unknown exceptions, and a reasonable way would be to reverse 
the relevant exception message when the ret is empty




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