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https://issues.apache.org/jira/browse/FLINK-13414?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17259003#comment-17259003
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Seth Wiesman commented on FLINK-13414:
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There is one more hiccup that needs to be addressed. Flinks
[TraversableSerializerSnapshot|https://github.com/apache/flink/blob/97bfd049951f8d52a2e0aed14265074c4255ead0/flink-scala/src/main/java/org/apache/flink/api/scala/typeutils/TraversableSerializerSnapshot.java]
serialize's the types CanBuildFrom object. The upgrade will need a migration
path to not break savepoint compatibility.
> Add support for Scala 2.13
> --------------------------
>
> Key: FLINK-13414
> URL: https://issues.apache.org/jira/browse/FLINK-13414
> Project: Flink
> Issue Type: New Feature
> Components: API / Scala
> Reporter: Chaoran Yu
> Priority: Major
>
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