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Posted to issues@flink.apache.org by "Tzu-Li (Gordon) Tai (JIRA)" <ji...@apache.org> on 2018/01/26 16:28:00 UTC

[jira] [Updated] (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 updated FLINK-8516:
---------------------------------------
    Affects Version/s: 1.5.0
                       1.4.0
                       1.3.2

> 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
>    Affects Versions: 1.4.0, 1.3.2, 1.5.0
>            Reporter: Thomas Weise
>            Priority: Major
>
> 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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