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https://issues.apache.org/jira/browse/KAFKA-12421?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Colin McCabe resolved KAFKA-12421.
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Assignee: Jose Armando Garcia Sancio (was: HaiyuanZhao)
Resolution: Fixed
> Improve controller's atomic grouping
> ------------------------------------
>
> Key: KAFKA-12421
> URL: https://issues.apache.org/jira/browse/KAFKA-12421
> Project: Kafka
> Issue Type: Improvement
> Components: controller
> Reporter: José Armando García Sancio
> Assignee: Jose Armando Garcia Sancio
> Priority: Major
> Labels: kip-500
>
> The current controller implementation atomically appends to the metadata log
> by making sure that all required records are on the same batch. The
> controller groups all of the records that result from an RPC into one batch.
> Some of the RPCs are:
> # Client quota changes
> # Configuration changes
> # Feature changes
> # Topic creation
> This is good enough for correctness but it is more aggressive than necessary.
> For example, for topic creation since errors are reported independently, the
> controller only needs to guarantee that all of the records for one topic are
> committed atomically.
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