Stefan Richter commented on FLINK-9375:

[~yanghua] this task maybe a bit more tricky than it sounds. If you still want 
to work on this, I think it would make a lot of sense if you would briefly 
outline your implementation plan here before you start coding.

> Introduce AbortCheckpoint message from JM to TMs
> ------------------------------------------------
>                 Key: FLINK-9375
>                 URL: https://issues.apache.org/jira/browse/FLINK-9375
>             Project: Flink
>          Issue Type: Improvement
>          Components: State Backends, Checkpointing
>            Reporter: Stefan Richter
>            Assignee: vinoyang
>            Priority: Major
> We should introduce an {{AbortCheckpoint}} message that a jobmanager can send 
> to taskmanagers if a checkpoint is canceled so that the operators can eagerly 
> stop their alignment phase and continue to normal processing. This can reduce 
> some backpressure issues in the context of canceled and restarted checkpoints.

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