[jira] [Commented] (FLINK-7124) Allow to rescale JobGraph on JobManager

["ASF GitHub Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/FLINK-7124?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16359662#comment-16359662 ] 

ASF GitHub Bot commented on FLINK-7124:
---------------------------------------

Github user asfgit closed the pull request at:

    https://github.com/apache/flink/pull/4510


> Allow to rescale JobGraph on JobManager
> ---------------------------------------
>
>                 Key: FLINK-7124
>                 URL: https://issues.apache.org/jira/browse/FLINK-7124
>             Project: Flink
>          Issue Type: Bug
>          Components: Distributed Coordination
>            Reporter: Till Rohrmann
>            Assignee: Tzu-Li (Gordon) Tai
>            Priority: Major
>             Fix For: 1.5.0
>
>
> In order to support dynamic scaling, the {{JobManager}} has to be able to change the parallelism of the submitted {{JobGraph}}. This basically entails that we can change the parallelism settings on the cluster side.
> We already have the functionality that we can change the parallelism if it was set to {{ExecutionConfig.PARALLELISM_AUTO_MAX}}. Therefore, I think the task is mostly about making sure that things really properly work when requesting a parallelism change.



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