[jira] [Resolved] (KAFKA-3470) Consumer group coordinator should take commit requests as effective as heartbeats

["Guozhang Wang (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/KAFKA-3470?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guozhang Wang resolved KAFKA-3470.
----------------------------------
       Resolution: Fixed
    Fix Version/s: 0.10.0.0

Issue resolved by pull request 1206
[https://github.com/apache/kafka/pull/1206]

> Consumer group coordinator should take commit requests as effective as heartbeats
> ---------------------------------------------------------------------------------
>
>                 Key: KAFKA-3470
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3470
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Zaiming Shi
>            Assignee: Jason Gustafson
>             Fix For: 0.10.0.0
>
>
> Group coordinator does not reset heartbeat timer when commit request is received.
> This may lead to unnecessary session timeouts when a consumer sends
> sync commit requests so frequently that causes heartbeat requests to be
> delayed.
> Presumably (as I do not know Kafka code well):
> Commit requests (v1 and v2) have all data fields for a heartbeat request,
> If they are taken as effective as heartbeat requests, we should have
> better group stability.
> [For reference]
> previous discussions in: users@kafka.apache.org
> mail title: 	consumer group, why commit requests are not considered as effective heartbeats?



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