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However, for stateful operators with retained checkpointing, the stop call won’t take any checkpoint, thus when resuming the job it needs to recover from the latest checkpoint with source rewinding, which causes the wait for processing all inflight data meaningless (all need to be processed again). In another word, there’s no real difference between stop and cancel in this case, thus having conceptual ambiguity.

On the other hand, in latest master branch after FLIP-34, job stop will always be accompanied by a savepoint, which has below problems:

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