[jira] [Created] (FLINK-12066) Remove StateSerializerProvider field in keyed state backend

[Shang Yuanchun (Jira)]

Yu Li created FLINK-12066:
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             Summary: Remove StateSerializerProvider field in keyed state backend
                 Key: FLINK-12066
                 URL: https://issues.apache.org/jira/browse/FLINK-12066
             Project: Flink
          Issue Type: Improvement
          Components: Runtime / State Backends
            Reporter: Yu Li
            Assignee: Yu Li
             Fix For: 1.9.0


As mentioned in [PR review of FLINK-10043|https://github.com/apache/flink/pull/7674#discussion_r257630962] with Stefan and offline discussion with Gordon, after the refactoring work serializer passed to {{RocksDBKeyedStateBackend}} constructor is a final one, thus the {{StateSerializerProvider}} field is no longer needed.

For {{HeapKeyedStateBackend}}, the only thing stops us to pass a final serializer is the circle dependency between the backend and {{HeapRestoreOperation}}, and we aim to decouple them by introducing a new {{HeapInternalKeyContext}} as the bridge. More details please refer to the coming PR.



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