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https://issues.apache.org/jira/browse/FLINK-2861?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15018885#comment-15018885
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ASF GitHub Bot commented on FLINK-2861:
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Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/1387#issuecomment-158538063
I don't understand you comment? What you describe is exactly how it works
(even before this PR). The problem was actually just a missing
`TypeInformation` I added here... However, I introduced this `token` into the
name of an operator here, because the `.select(...).map(...)` get chained which
alters the operator name and I need the original name later on in
`WrapperSetupHelper` -- this part is "hacky". But I am not sure if there is a
better solution to it. Look for the new variable `FlinkTopologyBuilder.token`.
> Fields grouping on split streams fails
> --------------------------------------
>
> Key: FLINK-2861
> URL: https://issues.apache.org/jira/browse/FLINK-2861
> Project: Flink
> Issue Type: Bug
> Components: Storm Compatibility
> Affects Versions: 0.10.0
> Reporter: Stephan Ewen
> Assignee: Matthias J. Sax
>
> Using split streams works for shuffle grouping, but not for Fields grouping.
> The reason is that the KeySelector expects an array, and the given type is
> the {{SplitStreamType}}.
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