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https://issues.apache.org/jira/browse/FLINK-31167?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17696081#comment-17696081
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Biao Liu commented on FLINK-31167:
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Hi [~mapohl] , sorry for the late response.
{quote} wouldn't we be more stricter by throwing an 
UnsupportedOperationException as the default behavior of the deprecated method 
implementation?
{quote}
I think it's considerable choice. There is only one scenario i'm worrying 
about. If someone implements a new {{{}OutputFormat{}}}, and the IDE does not 
generate the {{open}} method automatically somehow. The codes would pass the 
compiling but fail in runtime. It's not so friendly. So I prefer the less 
stricter choice a bit. What do you think?

> Verify that no exclusions were erroneously added to the japicmp plugin
> ----------------------------------------------------------------------
>
>                 Key: FLINK-31167
>                 URL: https://issues.apache.org/jira/browse/FLINK-31167
>             Project: Flink
>          Issue Type: Sub-task
>            Reporter: Matthias Pohl
>            Assignee: Matthias Pohl
>            Priority: Major
>
> Verify that no exclusions were erroneously added to the japicmp plugin that 
> break compatibility guarantees. Check the exclusions for the 
> japicmp-maven-plugin in the root pom (see 
> [apache/flink:pom.xml:2175ff|https://github.com/apache/flink/blob/3856c49af77601cf7943a5072d8c932279ce46b4/pom.xml#L2175]
>  for exclusions that:
> * For minor releases: break source compatibility for {{@Public}} APIs
> * For patch releases: break source/binary compatibility for 
> {{@Public}}/{{@PublicEvolving}}  APIs
> Any such exclusion must be properly justified, in advance.



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