[jira] [Created] (FLINK-14707) Refactor checkpoint related methods within Environment

[Shang Yuanchun (Jira)]

Yun Tang created FLINK-14707:
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             Summary: Refactor checkpoint related methods within Environment
                 Key: FLINK-14707
                 URL: https://issues.apache.org/jira/browse/FLINK-14707
             Project: Flink
          Issue Type: Improvement
            Reporter: Yun Tang
             Fix For: 1.10.0


After FLINK-7720 fixed, the two methods of {{Environment#acknowledgeCheckpoint}} have been actually useless, and their usage have been overridden by {{TaskStateManager#reportTaskStateSnapshots}}.
More generally, we would consider {{Environment}} interface as getter to access components instead of doing real actions. I prefer to remove {{acknowledgeCheckpoint}} and {{declineCheckpoint}} methods or at least deprecated them.



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