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https://issues.apache.org/jira/browse/KAFKA-10199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bruno Cadonna resolved KAFKA-10199.
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Resolution: Done
> Separate state restoration into separate threads
> ------------------------------------------------
>
> Key: KAFKA-10199
> URL: https://issues.apache.org/jira/browse/KAFKA-10199
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Bruno Cadonna
> Priority: Major
> Labels: new-streams-runtime-should-fix
>
> As part of the restoration optimization effort, we would like to move the
> restoration process to separate threads such that:
> 1. Stream threads would not be restricted by the main consumer `poll`
> frequency to keep as part of the group.
> 2. We can allow larger batches of data to be written into the restoration.
> Besides this, we'd also like to fix the known issues that for piggy-backed
> source topics as changelog topics, the serde exception / extra processing
> logic would be skipped.
> We would also cleanup the global update tasks as part of this effort to
> consolidate to the separate restoration threads, and would also gear them up
> with corresponding monitoring metrics (KIPs in progress).
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