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https://issues.apache.org/jira/browse/KAFKA-9562?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17043717#comment-17043717
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Boyang Chen commented on KAFKA-9562:
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A status update: we have fixed two sub tasks and one flush call try catch. The
latest changes are deployed to soak. Will update this ticket once we believe
2.5 is good to go on stream side.
> Streams not making progress under heavy failures with EOS enabled on 2.5
> branch
> -------------------------------------------------------------------------------
>
> Key: KAFKA-9562
> URL: https://issues.apache.org/jira/browse/KAFKA-9562
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 2.5.0
> Reporter: John Roesler
> Assignee: Boyang Chen
> Priority: Blocker
> Fix For: 2.5.0
>
>
> During soak testing in preparation for the 2.5.0 release, we have discovered
> a case in which Streams appears to stop making progress. Specifically, this
> is a failure-resilience test in which we inject network faults separating the
> instances from the brokers roughly every twenty minutes.
> On 2.4, Streams would obviously spend a lot of time rebalancing under this
> scenario, but would still make progress. However, on the current 2.5 branch,
> Streams effectively stops making progress except rarely.
> This appears to be a severe regression, so I'm filing this ticket as a 2.5.0
> release blocker.
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