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Posted to jira@kafka.apache.org by "Matthias J. Sax (Jira)" <ji...@apache.org> on 2019/09/19 23:16:00 UTC

[jira] [Assigned] (KAFKA-8927) Remove config `partition.grouper` and interface `PartitionGrouper`

     [ https://issues.apache.org/jira/browse/KAFKA-8927?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Matthias J. Sax reassigned KAFKA-8927:
--------------------------------------

    Assignee: Matthias J. Sax

> Remove config `partition.grouper` and interface `PartitionGrouper`
> ------------------------------------------------------------------
>
>                 Key: KAFKA-8927
>                 URL: https://issues.apache.org/jira/browse/KAFKA-8927
>             Project: Kafka
>          Issue Type: Improvement
>          Components: streams
>            Reporter: Matthias J. Sax
>            Assignee: Matthias J. Sax
>            Priority: Minor
>              Labels: kip
>
> The `PartitionGrouper` interface was originally exposed to allow user a higher degree of flexibility with regard to partition to task mapping. However, Kafka Streams runtime employs many undocumented restrictions to write a correct `PartitionGrouper` and hence it is easy for users to break the runtime that way.
> In practice, we have not seen the usage of the interface. Hence, we should consider to deprecate and eventually remove it.



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