Sihua Zhou created FLINK-8753:

             Summary: Introduce Incremental savepoint
                 Key: FLINK-8753
             Project: Flink
          Issue Type: New Feature
          Components: State Backends, Checkpointing
    Affects Versions: 1.5.0
            Reporter: Sihua Zhou
            Assignee: Sihua Zhou

Right now, savepoint goes through the full checkpoint path, take a savepoint 
could be slowly. In our production, for some long term job it often costs more 
than 10min to complete a savepoint which is unacceptable for a real time job, 
so we have to turn back to use the externalized checkpoint instead currently. 
But the externalized  checkpoint has a time interval (checkpoint interval) 
between the last time. So I proposal to introduce the increment savepoint which 
goes through the increment checkpoint path.

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