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https://issues.apache.org/jira/browse/FLINK-31281?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17705762#comment-17705762
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Ran Tao commented on FLINK-31281:
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got it. i will close it.[~mapohl] 

> PythonFunctionRunner doesn't extend AutoCloseable but implements close
> ----------------------------------------------------------------------
>
>                 Key: FLINK-31281
>                 URL: https://issues.apache.org/jira/browse/FLINK-31281
>             Project: Flink
>          Issue Type: Improvement
>          Components: API / Python
>            Reporter: Ran Tao
>            Priority: Major
>
> The PythonFunctionRunner provides a {{close}} method (see 
> [PythonFunctionRunner|https://github.com/apache/flink/blob/0612a997ddcc791ee54f500fbf1299ce04987679/flink-python/src/main/java/org/apache/flink/python/PythonFunctionRunner.java])
>  but doesn't implement {{{}AutoCloseable{}}}. However {{AutoCloseable}} would 
> enable us to use Java's try-with-resources feature and more generic utility 
> classes.



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