[jira] [Created] (FLINK-14344) Snapshot master hook state asynchronously

[Shang Yuanchun (Jira)]

Biao Liu created FLINK-14344:
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             Summary: Snapshot master hook state asynchronously
                 Key: FLINK-14344
                 URL: https://issues.apache.org/jira/browse/FLINK-14344
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / Checkpointing
            Reporter: Biao Liu
             Fix For: 1.10.0


Currently we snapshot the master hook state synchronously. As a part of reworking threading model of {{CheckpointCoordinator}}, we have to make this non-blocking to satisfy the requirement of running in main thread.

The behavior of snapshotting master hook state should be similar to task state snapshotting. It should be launched after \{{PendingCheckpoint}} created. It could complete or fail the {{PendingCheckpoint}} like task state snapshotting. 



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