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https://issues.apache.org/jira/browse/FLINK-6866?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16062894#comment-16062894
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Stephan Ewen commented on FLINK-6866:
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Not sure how easily this is solvable. After all, the objects need to be
serializable in the end. The closure cleaner cannot magically make
non-serializable elements serializable.
Can you share the code that causes this problem?
Can you avoid having an instantiated Wrapper by the time the class is
serialized?
> ClosureCleaner.clean fails for scala's JavaConverters wrapper classes
> ---------------------------------------------------------------------
>
> Key: FLINK-6866
> URL: https://issues.apache.org/jira/browse/FLINK-6866
> Project: Flink
> Issue Type: Bug
> Components: DataStream API, Scala API
> Affects Versions: 1.2.0, 1.3.0
> Environment: Scala 2.10.6, Scala 2.11.11
> Does not appear using Scala 2.12
> Reporter: SmedbergM
>
> MWE: https://github.com/SmedbergM/ClosureCleanerBug
> MWE console output:
> https://gist.github.com/SmedbergM/ce969e6e8540da5b59c7dd921a496dc5
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