[jira] [Created] (FLINK-4441) RocksDB statebackend makes all operators appear stateful

[Shang Yuanchun (Jira)]

Gyula Fora created FLINK-4441:
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             Summary: RocksDB statebackend makes all operators appear stateful
                 Key: FLINK-4441
                 URL: https://issues.apache.org/jira/browse/FLINK-4441
             Project: Flink
          Issue Type: Bug
          Components: State Backends, Checkpointing, Streaming
    Affects Versions: 1.1.1
            Reporter: Gyula Fora
            Assignee: Gyula Fora
            Priority: Blocker


When the state is empty the rocks db state backend returns an empty hashmap instead of a null in the snapshotPartitionedState method.

This means that these operators always appear stateful to the flink runtime which makes it impossible for instance to remove a stateless operator using the savepoints.



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