ASF GitHub Bot commented on FLINK-4510:

Github user uce commented on the issue:

    Thanks for the contribution. I'm going to merge this with slight 
modifications. We don't need the introduced checks with the current master as 
there is a check whether periodic checkpoints are activated.

> Always create CheckpointCoordinator
> -----------------------------------
>                 Key: FLINK-4510
>                 URL: https://issues.apache.org/jira/browse/FLINK-4510
>             Project: Flink
>          Issue Type: Sub-task
>          Components: State Backends, Checkpointing
>            Reporter: Ufuk Celebi
>            Assignee: Jark Wu
> The checkpoint coordinator is only created if a checkpointing interval is 
> configured. This means that no savepoints can be triggered if there is no 
> checkpointing interval specified.
> Instead we should always create it and allow an interval of 0 for disabled 
> periodic checkpoints. 

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