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Posted to jira@kafka.apache.org by "Bill Bejeck (JIRA)" <ji...@apache.org> on 2018/11/28 15:44:00 UTC

[jira] [Assigned] (KAFKA-7671) A KStream/GlobalKTable join shouldn't reset the repartition flag

     [ https://issues.apache.org/jira/browse/KAFKA-7671?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Bill Bejeck reassigned KAFKA-7671:
----------------------------------

    Assignee: Bill Bejeck

> A KStream/GlobalKTable join shouldn't reset the repartition flag
> ----------------------------------------------------------------
>
>                 Key: KAFKA-7671
>                 URL: https://issues.apache.org/jira/browse/KAFKA-7671
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>    Affects Versions: 2.0.1
>            Reporter: Andy Bryant
>            Assignee: Bill Bejeck
>            Priority: Major
>             Fix For: 2.2.0, 2.1.1
>
>
> Currently a KStream/GlobalKTable join resets the repartition required flag to false.
> I have a topology where I map a stream, join with a GlobalKTable, then groupByKey then aggregate.
> The aggregate wasn't behaving correctly because it didn't force a repartition as I expected. The KStream/GlobalKTable join had reset the flag and hence I was getting the same keys in different partitions.
> Since a KStream/GlobalKTable join does not itself force a repartition, it should simply propagate the flag down to the resultant KStream the same way most other operators work.
>  



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