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[jira] [Created] (FLINK-10121) Introduce methods to remove registered operator states


Stefan Richter created FLINK-10121:
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             Summary: Introduce methods to remove registered operator states
                 Key: FLINK-10121
                 URL: https://issues.apache.org/jira/browse/FLINK-10121
             Project: Flink
          Issue Type: Improvement
          Components: State Backends, Checkpointing
            Reporter: Stefan Richter
            Assignee: Stefan Richter
             Fix For: 1.7.0


User can register new operator states but never remove a registered state. This is particularly problematic with expensive states or states that we register only to provide backwards compatibility. We can also consider the same for keyed state.



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