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https://issues.apache.org/jira/browse/FLINK-4877?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16217024#comment-16217024
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ASF GitHub Bot commented on FLINK-4877:
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Github user StephanEwen commented on the issue:
https://github.com/apache/flink/pull/4877
Thanks for opening this pull request.
I think it is correct that `SourceFunction` is not required to implement
`Serializable`. But I think it does not cause any problems, as far as I know,
it has no implication at all on the runtime or behavior.
It does serve as a "reminder" that sources need to be serializable, so it
could actually be helpful to keep it.
Given that it makes no difference, should we keep it?
> Refactorings around FLINK-3674 (User Function Timers)
> -----------------------------------------------------
>
> Key: FLINK-4877
> URL: https://issues.apache.org/jira/browse/FLINK-4877
> Project: Flink
> Issue Type: Sub-task
> Components: Streaming
> Reporter: Aljoscha Krettek
> Fix For: 1.2.0
>
>
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