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Posted to issues@flink.apache.org by "BoWang (JIRA)" <ji...@apache.org> on 2019/04/09 07:13:00 UTC

[jira] [Commented] (FLINK-12135) Decrease parallelism of tasks with too small input data size

    [ https://issues.apache.org/jira/browse/FLINK-12135?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16813065#comment-16813065 ] 

BoWang commented on FLINK-12135:
--------------------------------

Due to the high cost of splitting, in the first step we only merge partitions, i.e., only decrease parallelism

> Decrease parallelism of tasks with too small input data size
> ------------------------------------------------------------
>
>                 Key: FLINK-12135
>                 URL: https://issues.apache.org/jira/browse/FLINK-12135
>             Project: Flink
>          Issue Type: Sub-task
>          Components: Runtime / Coordination
>            Reporter: BoWang
>            Assignee: BoWang
>            Priority: Major
>




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