[jira] [Commented] (ROCKETMQ-233) Apply pull interval when pull result contains no new matched msg

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/ROCKETMQ-233?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16289205#comment-16289205 ] 

ASF GitHub Bot commented on ROCKETMQ-233:
-----------------------------------------

dongeforever commented on a change in pull request #127: [ROCKETMQ-233] Fix pull interval issue
URL: https://github.com/apache/rocketmq/pull/127#discussion_r156645862
 
 

 ##########
 File path: client/src/main/java/org/apache/rocketmq/client/consumer/DefaultMQPushConsumer.java
 ##########
 @@ -231,6 +234,7 @@ public DefaultMQPushConsumer(final String consumerGroup, RPCHook rpcHook, Alloca
         this.consumerGroup = consumerGroup;
         this.allocateMessageQueueStrategy = allocateMessageQueueStrategy;
         defaultMQPushConsumerImpl = new DefaultMQPushConsumerImpl(this, rpcHook);
+        this.pullIntervalPolicy = new BoundedExponentialPullIntervalPolicy(100, 300000);
     }
 
 Review comment:
   300s is too long. 
   For SUB latency-sensitive applications, long polling is suggested.
   So fix pull interval policy is suggested, and the default pull interval should be zero.

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> Apply pull interval when pull result contains no new matched msg
> ----------------------------------------------------------------
>
>                 Key: ROCKETMQ-233
>                 URL: https://issues.apache.org/jira/browse/ROCKETMQ-233
>             Project: Apache RocketMQ
>          Issue Type: Bug
>            Reporter: Zhanhui Li
>            Assignee: Zhanhui Li
>             Fix For: 4.3.0
>
>




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