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Posted to issues@flink.apache.org by "Tzu-Li (Gordon) Tai (JIRA)" <ji...@apache.org> on 2018/02/15 18:24:00 UTC

[jira] [Resolved] (FLINK-8516) FlinkKinesisConsumer does not balance shards over subtasks

     [ https://issues.apache.org/jira/browse/FLINK-8516?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Tzu-Li (Gordon) Tai resolved FLINK-8516.
----------------------------------------
       Resolution: Fixed
    Fix Version/s: 1.5.0

Thanks for your contribution [~thw]!

Merged to master via 942649e933f3106d923c567c705d75fc9aa0a40c.

> FlinkKinesisConsumer does not balance shards over subtasks
> ----------------------------------------------------------
>
>                 Key: FLINK-8516
>                 URL: https://issues.apache.org/jira/browse/FLINK-8516
>             Project: Flink
>          Issue Type: Bug
>          Components: Kinesis Connector
>            Reporter: Thomas Weise
>            Assignee: Thomas Weise
>            Priority: Major
>             Fix For: 1.5.0
>
>
> The hash code of the shard is used to distribute discovered shards over subtasks round robin. This works as long as shard identifiers are sequential. After shards are rebalanced in Kinesis, that may no longer be the case and the distribution become skewed.



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