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

[Shang Yuanchun (Jira)]

Till Rohrmann created FLINK-7124:
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             Summary: 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


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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