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https://issues.apache.org/jira/browse/FLINK-2457?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14653574#comment-14653574
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ASF GitHub Bot commented on FLINK-2457:
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Github user StephanEwen commented on the pull request:
https://github.com/apache/flink/pull/983#issuecomment-127594920
I think this patch needs to include the proper serializers and comparators
for the tuple0. Otherwise it now allows users to use the type, but the runtime
may fail on it, which is a dangerous inconsistent state.
> 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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