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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 reassigned FLINK-22125:
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    Assignee: Dian Fu

> Revisit the return value of MapState.get when the 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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