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https://issues.apache.org/jira/browse/KAFKA-14530?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Matthias J. Sax resolved KAFKA-14530.
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Fix Version/s: 3.5.0
Resolution: Fixed
> Check state updater more than once in process loops
> ---------------------------------------------------
>
> Key: KAFKA-14530
> URL: https://issues.apache.org/jira/browse/KAFKA-14530
> Project: Kafka
> Issue Type: Task
> Components: streams
> Reporter: Lucas Brutschy
> Assignee: Lucas Brutschy
> Priority: Minor
> Fix For: 3.5.0
>
>
> In the new state restoration code, the state updater needs to be checked
> regularly by the main thread to transfer ownership of tasks back to the main
> thread once the state of the task is restored. The more often we check this,
> the faster we can start processing the tasks.
> Currently, we only check the state updater once in every loop iteration of
> the state updater. And while we couldn't observe this to be strictly not
> often enough, we can increase the number of checks easily by moving the check
> inside the inner processing loop. This would mean that once we have iterated
> over `numIterations` records, we can already start processing tasks that have
> finished restoration in the meantime.
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