ASF GitHub Bot commented on FLINK-4717:

Github user uce commented on the issue:

    Thanks for this review, too. Good catch with the broken 
`stopCheckpointScheduler`. I will add your proposed fix as a separate commit.

> Naive version of atomic stop signal with savepoint
> --------------------------------------------------
>                 Key: FLINK-4717
>                 URL: https://issues.apache.org/jira/browse/FLINK-4717
>             Project: Flink
>          Issue Type: New Feature
>          Components: State Backends, Checkpointing
>    Affects Versions: 1.2.0
>            Reporter: Till Rohrmann
>            Priority: Minor
>             Fix For: 1.2.0
> As a first step towards atomic stopping with savepoints we should implement a 
> cancel command which prior to cancelling takes a savepoint. Additionally, it 
> should turn off the periodic checkpointing so that there won't be checkpoints 
> executed between the savepoint and the cancel command.

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