[jira] [Created] (FLINK-21673) Add extension points to heap backend to read/write incremental snapshots

[Shang Yuanchun (Jira)]

Roman Khachatryan created FLINK-21673:
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             Summary: Add extension points to heap backend to read/write incremental snapshots
                 Key: FLINK-21673
                 URL: https://issues.apache.org/jira/browse/FLINK-21673
             Project: Flink
          Issue Type: Sub-task
          Components: Runtime / State Backends
            Reporter: Roman Khachatryan
            Assignee: Roman Khachatryan
             Fix For: 1.13.0


For each state, incremental backend can create either incremental or full snapshot.

States of type PQ or nested tables are always fully snapshotted.

The goal is allow future incremental backend to:
 # distinguish between full/inc snapshots on recovery
 # read incremental snapshot

This ticket is only about changing the existing classes (providing extension points).

 

Optional goal: compatibility between backends.



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