[jira] [Created] (FLINK-6545) Make incremental checkpoints externalizable

[Shang Yuanchun (Jira)]

Stefan Richter created FLINK-6545:
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             Summary: Make incremental checkpoints externalizable
                 Key: FLINK-6545
                 URL: https://issues.apache.org/jira/browse/FLINK-6545
             Project: Flink
          Issue Type: Sub-task
          Components: State Backends, Checkpointing
    Affects Versions: 1.3.0
            Reporter: Stefan Richter
            Priority: Blocker
             Fix For: 1.3.0


Incremental checkpoints are currently not externalizible. The missing piece is familiarizing the {{SavepointSerializer}}(s) with the new state handles classes that we added for incremental checkpointing. Currently, some of those (e.g. {{org.apache.flink.contrib.streaming.state.RocksDBIncrementalKeyedStateHandle}}) currently live in the contrib.rocksdb package and need to be migrated. We can also push them to a different abstraction level, i.e. {{IncrementalKeyedStateHandle}} with some private data, referenced existing shared data (from previous checkpoints), and (presumably) newly created shared data (first created by the current checkpoint).



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