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https://issues.apache.org/jira/browse/KAFKA-13501?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17497201#comment-17497201
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Matthias J. Sax commented on KAFKA-13501:
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There is also https://issues.apache.org/jira/browse/KAFKA-13333 which seems
related, too.
> Avoid state restore via rebalance if standbys are enabled
> ---------------------------------------------------------
>
> Key: KAFKA-13501
> URL: https://issues.apache.org/jira/browse/KAFKA-13501
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Matthias J. Sax
> Assignee: Sagar Rao
> Priority: Major
>
> There are certain scenario in which Kafka Streams wipes out local state and
> rebuilt it from scratch. This is a thread local cleanup, ie, no rebalance is
> triggered, and we end up with an offline task until state restoration
> finished.
> If standby tasks are enable, it might actually make sense to trigger a
> rebalance instead, to get the task re-assigned to the instance hosting the
> standby so get the task active again quickly.
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