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Posted to dev@kafka.apache.org by "Guozhang Wang (JIRA)" <ji...@apache.org> on 2017/02/24 18:34:44 UTC

[jira] [Resolved] (KAFKA-4494) Significant startup delays in KStreams app

     [ https://issues.apache.org/jira/browse/KAFKA-4494?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guozhang Wang resolved KAFKA-4494.
----------------------------------
       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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