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https://issues.apache.org/jira/browse/KAFKA-2804?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15023433#comment-15023433
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ASF GitHub Bot commented on KAFKA-2804:
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GitHub user guozhangwang opened a pull request:
https://github.com/apache/kafka/pull/579
KAFKA-2804: manage changelog topics through ZK in PartitionAssignor
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/guozhangwang/kafka K2804
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/kafka/pull/579.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 #579
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> Create / Update changelog topics upon state store initialization
> ----------------------------------------------------------------
>
> Key: KAFKA-2804
> URL: https://issues.apache.org/jira/browse/KAFKA-2804
> Project: Kafka
> Issue Type: Sub-task
> Reporter: Guozhang Wang
> Assignee: Guozhang Wang
>
> When state store instances that are logging-backed are initialized, we need
> to check if the corresponding change log topics have been created with the
> right number of partitions:
> 1) If not exist, create topic
> 2) If expected #.partitions < actual #.partitions, delete and re-create topic.
> 3) If expected #.partitions > actual #.partitions, add partitions.
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