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https://issues.apache.org/jira/browse/FLINK-2678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15126664#comment-15126664
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ASF GitHub Bot commented on FLINK-2678:
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Github user tillrohrmann commented on the pull request:
https://github.com/apache/flink/pull/1566#issuecomment-178097783
Thanks for your contribution @sbcd90. I think the PR needs still a bit of
work before it can be merged. The implementation of `GenericArrayComparator`
only works for primitive types. Furthermore, I think that it is easier to
construct the comparator out of the component type information of the
`ObjectArrayTypeInfo` instead of doing the type analysis again every time you
call `compare`.
> DataSet API does not support multi-dimensional arrays as keys
> -------------------------------------------------------------
>
> Key: FLINK-2678
> URL: https://issues.apache.org/jira/browse/FLINK-2678
> Project: Flink
> Issue Type: Wish
> Components: DataSet API
> Reporter: Till Rohrmann
> Assignee: Subhobrata Dey
> Priority: Minor
>
> The DataSet API does not support grouping/sorting on field which are
> multi-dimensional arrays. It could be helpful to also support these types.
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