[jira] [Created] (FLINK-4754) Make number of retained checkpoints user configurable

[Shang Yuanchun (Jira)]

Ufuk Celebi created FLINK-4754:
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             Summary: Make number of retained checkpoints user configurable
                 Key: FLINK-4754
                 URL: https://issues.apache.org/jira/browse/FLINK-4754
             Project: Flink
          Issue Type: Improvement
          Components: State Backends, Checkpointing
    Affects Versions: 1.1.2
            Reporter: Ufuk Celebi


The number of retained successful checkpoints is fixed to 1. Expose this setting via the {{CheckpointConfig}} instead of having it fixed as a static field in the {{CheckpointRecoveryFactory}}.

With the current state of things, this would require to set this value lazily in the checkpoint store implementations instead of setting it when creating the store.



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