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Posted to dev@kafka.apache.org by "Guozhang Wang (JIRA)" <ji...@apache.org> on 2017/12/08 16:55:00 UTC

[jira] [Resolved] (KAFKA-5702) Refactor StreamThread to separate concerns and enable better testability

     [ https://issues.apache.org/jira/browse/KAFKA-5702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guozhang Wang resolved KAFKA-5702.
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    Resolution: Fixed

> Refactor StreamThread to separate concerns and enable better testability
> ------------------------------------------------------------------------
>
>                 Key: KAFKA-5702
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5702
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>            Reporter: Damian Guy
>            Assignee: Damian Guy
>
> {{StreamThread}} does a lot of stuff, i.e., managing and creating tasks, getting data from consumers, updating standby tasks, punctuating, rebalancing etc. With the current design it is extremely hard to reason about and is quite tightly coupled. 
> We need to start to tease out some of the separate concerns from StreamThread, ie, TaskManager, RebalanceListener etc. 



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