Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/2453
Thanks for looking into this.
I wonder if we can do this simpler, without changes to the
CheckpointCoordinator.
The only thing that really needs to change is that without periodic
checkpoints, the `startCheckpointScheduler()` method is not called, which means
that the JobStatusListener that "CheckpointActivatorDeactivator" should not be
created and started.
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