odbozhou commented on a change in pull request #3981:
URL: https://github.com/apache/rocketmq/pull/3981#discussion_r833855946



##########
File path: 
client/src/main/java/org/apache/rocketmq/client/impl/producer/DefaultMQProducerImpl.java
##########
@@ -135,7 +135,8 @@ public DefaultMQProducerImpl(final DefaultMQProducer 
defaultMQProducer, RPCHook
                 public Thread newThread(Runnable r) {
                     return new Thread(r, "AsyncSenderExecutor_" + 
this.threadIndex.incrementAndGet());
                 }
-            });
+            },
+            new ThreadPoolExecutor.CallerRunsPolicy());

Review comment:
       In my opinion, if it is to limit the flow and reject redundant tasks, 
the default AbortPolicy should be enough, and CallerRunsPolicy will run the 
task, in which case the task is discarded.




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