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Posted to jira@kafka.apache.org by "huxihx (Jira)" <ji...@apache.org> on 2020/06/18 07:08:00 UTC

[jira] [Commented] (KAFKA-10182) Change number of partitions of __consumer_offsets

    [ https://issues.apache.org/jira/browse/KAFKA-10182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17139155#comment-17139155 ] 

huxihx commented on KAFKA-10182:
--------------------------------

You could use `Admin.createPartitions` API to increase partition count for this internal topic.

> Change number of partitions of __consumer_offsets 
> --------------------------------------------------
>
>                 Key: KAFKA-10182
>                 URL: https://issues.apache.org/jira/browse/KAFKA-10182
>             Project: Kafka
>          Issue Type: Improvement
>            Reporter: Xu Zhang
>            Priority: Major
>
> {{currently __consumer_offsets}} cannot be changed for the lifetime of the cluster, and it's generally a really bad idea to change the number of partitions for __consumer_offsets after it is initially created. Because hashing for consumer group name to partition to change, which means the group coordinator will have no history.
>  
> Is there a way to change the number of partitions for __consumer_offsets? 



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