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https://issues.apache.org/jira/browse/FLINK-22125?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dian Fu closed FLINK-22125.
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Resolution: Fixed
Merged to master via f79333d8b6d04a14fcf8e62a2c35df8ea64548e5
> Revisit the return value of MapState.get when a key doesn't exist
> -----------------------------------------------------------------
>
> Key: FLINK-22125
> URL: https://issues.apache.org/jira/browse/FLINK-22125
> Project: Flink
> Issue Type: Sub-task
> Components: API / Python
> Affects Versions: 1.13.0
> Reporter: Dian Fu
> Assignee: Dian Fu
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.13.0
>
>
> Currently, it will thrown KeyError if the key doesn't exist for MapState in
> Python DataStream API. However, it returns null in the Java DataStream API.
> Maybe we should keep the behavior the same across Python DataStream API and
> Java DataStream API.
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