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

Zaiming Shi updated KAFKA-3470:
-------------------------------
    Description: 
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: us...@kafka.apache.org
mail title:     consumer group, why commit requests are not considered as 
effective heartbeats?


  was:
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) 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: us...@kafka.apache.org
mail title:     consumer group, why commit requests are not considered as 
effective heartbeats?



> 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
>
> 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: us...@kafka.apache.org
> mail title:   consumer group, why commit requests are not considered as 
> effective heartbeats?



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