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https://issues.apache.org/jira/browse/FLINK-2457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14653588#comment-14653588
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ASF GitHub Bot commented on FLINK-2457:
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Github user mjsax commented on the pull request:
https://github.com/apache/flink/pull/983#issuecomment-127597013
I double checked with two different programs and it worked... Not sure if I
am missing something. Please see dev mailing list. Otherwise, please help me to
come up with an example that breaks serialization such that I can use this
example to fix the code. I did not try comparators though: not sure for what
this would be helpful? There is no data in Tuple0 so there is nothing to
compare with. IMHO, all Tuple0 object are equal to each other. I don't see any
use case to group on Tuple0, thus, comparators are not required from my point
of view and should not be supported.
> Integrate Tuple0
> ----------------
>
> Key: FLINK-2457
> URL: https://issues.apache.org/jira/browse/FLINK-2457
> Project: Flink
> Issue Type: Improvement
> Reporter: Matthias J. Sax
> Assignee: Matthias J. Sax
> Priority: Minor
>
> Tuple0 is not cleanly integrated:
> - missing serialization/deserialization support in runtime
> - Tuple.getTupleClass(int arity) cannot handle arity zero, ie, cannot create
> an instance of Tuple0
> Tuple0 is currently only used in Python API, but will be integrated into
> Storm compatibility, too.
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