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https://issues.apache.org/jira/browse/KAFKA-20425?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Apoorv Mittal resolved KAFKA-20425.
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Resolution: Fixed
> Avoid triggers to purgatory when no data is available for share fetch
> ---------------------------------------------------------------------
>
> Key: KAFKA-20425
> URL: https://issues.apache.org/jira/browse/KAFKA-20425
> Project: Kafka
> Issue Type: Improvement
> Reporter: Apoorv Mittal
> Assignee: Apoorv Mittal
> Priority: Major
>
> The delayed share fetch triggers waiting requests for same topic partition in
> purgatory for which the request has been completed. This is needed as for
> same sahre partition there can be requests in purgatory waiting to acquire
> lock. However, the triggers are always not needed i.e. when no data is
> available in partition hence these triggers can be avoided.
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