ASF GitHub Bot commented on FLINK-8656:

Github user tillrohrmann commented on the issue:

    The temporary savepoint is only relevant for a single `JobMaster` because 
the rescaling operation is not persisted. In case of a master failover the user 
would have to retrigger the rescaling on the new `JobMaster`.
    Concerning the check: True but this would be an unrelated change which 
should be part of a separate issue.

> Add CLI command for rescaling
> -----------------------------
>                 Key: FLINK-8656
>                 URL: https://issues.apache.org/jira/browse/FLINK-8656
>             Project: Flink
>          Issue Type: New Feature
>          Components: Client
>    Affects Versions: 1.5.0
>            Reporter: Till Rohrmann
>            Assignee: Till Rohrmann
>            Priority: Major
>              Labels: flip-6
>             Fix For: 1.5.0
> The REST rescaling calls should be made accessible via the {{CliFrontend}}. 
> In order to do that I propose to add a {{modify}} command to the 
> {{CliFrontend}} to which we can pass a new parallelism.

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