Github user sunjincheng121 commented on the issue:
https://github.com/apache/flink/pull/3534
Hi, @StephanEwen thanks for your attention to this JIRA. This issue only a
code cleanup. In fact this is not a bug. When I work on
[FLINK-5995](https://issues.apache.org/jira/browse/FLINK-5995), when using
`DefaultOperatorStateBackend#getOperatorState` got an exception, Then I checked
out the `AbstractKeyedStateBackend#getPartitionedState`, Then find the code
duplicate check. Just like description of this JIRA.
About `AbstractKeyedStateBackend#getOrCreateKeyedState` I'm not sure, but I
suggest do the same thing with `getPartitionedState`. Because I had check
`WindowOperator's windowStateDescriptor` also use
`input.getType().createSerializer(getExecutionEnvironment().getConfig())` init
the `typeSerializer`.
What do you think?
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