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https://issues.apache.org/jira/browse/KAFKA-9561?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17053333#comment-17053333
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Stepanenko Vyacheslav commented on KAFKA-9561:
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[~bchen225242] could you please review
> Update task input partitions when topic metadata changes
> --------------------------------------------------------
>
> Key: KAFKA-9561
> URL: https://issues.apache.org/jira/browse/KAFKA-9561
> Project: Kafka
> Issue Type: Improvement
> Components: streams
> Reporter: Boyang Chen
> Assignee: Stepanenko Vyacheslav
> Priority: Major
> Labels: beginner, newbie, stream
>
> With https://issues.apache.org/jira/browse/KAFKA-9545, we exposed a
> possibility that a task could have been alive throughout the rebalance, while
> the input partitions actually change. For example, a regex subscribed source
> could have different topics when partitions are added/removed. We need to
> consider adding the support to expand/shrink the partitions across rebalance
> to keep task information consistent with subscription data.
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