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https://issues.apache.org/jira/browse/KAFKA-4494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Guozhang Wang resolved KAFKA-4494.
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Resolution: Fixed
Fix Version/s: 0.10.3.0
Issue resolved by pull request 2560
[https://github.com/apache/kafka/pull/2560]
> Significant startup delays in KStreams app
> ------------------------------------------
>
> Key: KAFKA-4494
> URL: https://issues.apache.org/jira/browse/KAFKA-4494
> Project: Kafka
> Issue Type: Bug
> Components: streams
> Affects Versions: 0.10.1.0
> Environment: AWS Linux ami, mac os
> Reporter: j yeargers
> Assignee: Damian Guy
> Labels: performance
> Fix For: 0.10.3.0
>
>
> Often starting a KStreams based app results in significant (5-10 minutes)
> delay before processing of stream begins.
> Sample debug output:
> https://gist.github.com/jyeargers/e8398fb353d67397f99148bc970479ee
> Topology in question: stream -> map -> groupbykey.aggregate -> print
> Stream is JSON.
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