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From "Thomas Weise (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FLINK-8516) FlinkKinesisConsumer does not balance shards over subtasks
Date Fri, 26 Jan 2018 16:33:00 GMT

    [ https://issues.apache.org/jira/browse/FLINK-8516?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16341233#comment-16341233
] 

Thomas Weise commented on FLINK-8516:
-------------------------------------

Can a PMC please add me as contributor, thanks! CC: [~StephanEwen]

 

> 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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