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https://issues.apache.org/jira/browse/KAFKA-9481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-9481.
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Fix Version/s: 2.6.0
Resolution: Fixed
> Improve TaskMigratedException handling on Stream thread
> -------------------------------------------------------
>
> Key: KAFKA-9481
> URL: https://issues.apache.org/jira/browse/KAFKA-9481
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Guozhang Wang
> Assignee: Guozhang Wang
> Priority: Major
> Fix For: 2.6.0
>
>
> Today we handle TaskMigratedException as one-task at a time, when 1) producer
> got fenced, 2) consumer got fenced, 3) adding records to closed tasks.
> When 1) and 2) happens, all tasks hosted by that thread should have migrated;
> and for 3) it only happens when we are closing a task but not clearing its
> corresponding record buffer.
> So a better exception handling is first better fixing 3) to also clear the
> record buffer when closing a task (clean or dirty), and then for 1/2) we can
> always treat it as all-tasks-are-migrated.
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