Gyula Fora created FLINK-10387:
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Summary: StateBackend create methods should return interface not
abstract KeyedStateBackend classes
Key: FLINK-10387
URL: https://issues.apache.org/jira/browse/FLINK-10387
Project: Flink
Issue Type: Improvement
Components: State Backends, Checkpointing
Affects Versions: 1.6.0
Reporter: Gyula Fora
Currently the createKeyedStateBackend(...) methods return
AbstractKeyedStateBackend instead of an interface.
This makes it virtually impossible to write nice extensions to StateBackends
that add additional functionality to existing backends while delegating other
method calls.
It should be easy enough to add a new interface that extends everything that
the AbstractKeyedStateBackend does and the method should return that.
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