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https://issues.apache.org/jira/browse/FLINK-8451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16374247#comment-16374247
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ASF GitHub Bot commented on FLINK-8451:
---------------------------------------

Github user tzulitai commented on the issue:

    https://github.com/apache/flink/pull/5567
  
    A few side notes:
    1) Maybe we should have written just the arity of tuples in the config 
snapshots. That would have avoided this issue.
    2) Is there any potential cases like this one, for other Scala types beside 
Tuples?


> CaseClassSerializer is not backwards compatible in 1.4
> ------------------------------------------------------
>
>                 Key: FLINK-8451
>                 URL: https://issues.apache.org/jira/browse/FLINK-8451
>             Project: Flink
>          Issue Type: Bug
>          Components: Type Serialization System
>    Affects Versions: 1.4.0, 1.5.0
>            Reporter: Timo Walther
>            Assignee: Timo Walther
>            Priority: Blocker
>             Fix For: 1.5.0, 1.4.2
>
>
> There seems to be problems with the updated Scala version and the 
> CaseClassSerializer that make it impossible to restore from a Flink 1.3 
> savepoint.
> http://mail-archives.apache.org/mod_mbox/flink-user/201801.mbox/%3CCACk7FThV5itjSj_1fG9oaWS86z8WTKWs7abHvok6FnHzq9XT-A%40mail.gmail.com%3E
> http://mail-archives.apache.org/mod_mbox/flink-user/201801.mbox/%3C7CABB00B-D52F-4878-B04F-201415CEB658%40mediamath.com%3E



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