[jira] [Created] (FLINK-4984) Add Cancellation Barriers to BarrierTracker and BarrierBuffer

[Shang Yuanchun (Jira)]

Stephan Ewen created FLINK-4984:
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             Summary: Add Cancellation Barriers to BarrierTracker and BarrierBuffer
                 Key: FLINK-4984
                 URL: https://issues.apache.org/jira/browse/FLINK-4984
             Project: Flink
          Issue Type: Sub-task
          Components: State Backends, Checkpointing
            Reporter: Stephan Ewen






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