ASF GitHub Bot commented on FLINK-7124:

Github user tzulitai commented on the issue:

    R: @tillrohrmann 

> 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
> 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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