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https://issues.apache.org/jira/browse/KAFKA-1170?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Neha Narkhede updated KAFKA-1170:
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Attachment: KAFKA-1170.patch
> ISR can be inconsistent during partition reassignment for low throughput
> partitions
> -----------------------------------------------------------------------------------
>
> Key: KAFKA-1170
> URL: https://issues.apache.org/jira/browse/KAFKA-1170
> Project: Kafka
> Issue Type: Bug
> Components: controller
> Affects Versions: 0.8.1
> Reporter: Neha Narkhede
> Assignee: Neha Narkhede
> Priority: Critical
> Attachments: KAFKA-1170.patch
>
>
> During reassignment of partitions, if the reassigned replicas already has the
> current leader, then the ISR of the partition can have the old replicas. This
> is particularly true for partitions that don't have further incoming data,
> since the leader does not remove replicas that have stopped sending fetch
> requests from the ISR if their log end offsets match (no more data comes in).
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