[jira] [Commented] (KAFKA-5678) When the broker graceful shutdown occurs, the producer side sends timeout.

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

    [ https://issues.apache.org/jira/browse/KAFKA-5678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16106331#comment-16106331 ] 

ASF GitHub Bot commented on KAFKA-5678:
---------------------------------------

GitHub user xiguantiaozhan opened a pull request:

    https://github.com/apache/kafka/pull/3597

    KAFKA-5678: When the broker graceful shutdown occurs, the producer side sends timeout.

    

You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/xiguantiaozhan/kafka client-timeout-when-shuttingdwon-broker

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/kafka/pull/3597.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #3597
    
----
commit e4b45178693d77ecb783524b87029cc671bf8afc
Author: tuyang <tu...@meituan.com>
Date:   2017-07-30T05:36:16Z

    improvement:When the broker graceful shutdown occurs, the producer side sends timeout.

----


> When the broker graceful shutdown occurs, the producer side sends timeout.
> --------------------------------------------------------------------------
>
>                 Key: KAFKA-5678
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5678
>             Project: Kafka
>          Issue Type: Improvement
>    Affects Versions: 0.9.0.0, 0.10.0.0, 0.11.0.0
>            Reporter: tuyang
>
> Test environment as follows.
> 1.Kafka version：0.9.0.1
> 2.Cluster with 3 broker which with broker id A,B,C 
> 3.Topic with 6 partitions with 2 replicas，with 2 leader partitions at each broker.
> We can reproduce the problem as follows.
> 1.we send message as quickly as possible with ack -1.
> 2.if partition p0's leader is on broker A and we graceful shutdown broker A，but we send a message to p0 before the leader is reelect, so the message can be appended to the leader replica successful, but if the follower replica not catch it as quickly as possible, so the shutting down broker will create a delayProduce for this request to wait complete until request.timeout.ms .
> 3.because of the controllerShutdown request from broker A, then the p0 partition leader will reelect
> , then the replica on broker A will become follower before complete shut down.then the delayProduce will not be trigger to complete until expire. 
> 4.if broker A shutdown cost too long, then the producer will get response after request.timeout.ms, which results in increase the producer send latency when we are restarting broker one by one.



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