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https://issues.apache.org/jira/browse/FLINK-1962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14530313#comment-14530313
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Stephan Ewen commented on FLINK-1962:
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How about remove the generic type constraints from the Gelly Java API ? In the
core API, we have no such constraints.
The Flink client checks during plan generation anyways whether the key types
are suitable as keys, so you would get a check in the re-flight phase still.
Concerning seralizability, this is mainly caused by the fact that the types are
used in function closures. This is a limitation that would be good to get
around anyways in the near future, so that we support all types that the Flink
type stack can handle.
BTW: Scala case classes are serializable, so they should actually work fine
against the serializable bound.
> Add Gelly Scala API
> -------------------
>
> Key: FLINK-1962
> URL: https://issues.apache.org/jira/browse/FLINK-1962
> Project: Flink
> Issue Type: Task
> Components: Gelly, Scala API
> Affects Versions: 0.9
> Reporter: Vasia Kalavri
>
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