GitHub user ymarzougui opened a pull request:
https://github.com/apache/flink/pull/2835
[FLINK-3869] WindowedStream.apply with FoldFunction is too restrictive
This pull request removes the restriction that a WindowFunction in a
fold/apply should emit the same type as the accumulator type of the fold. It
brings the following changes to the Java and Scala APIs:
- Deprecating `apply(ReduceFunction, WindowFunction)` and the restrictive
`apply(Initial, FoldFunction, WindowFunction)` methods.
- Replacing them with two methods : `reduce(ReduceFunction,
WindowFunction)` and a non-restrictive `fold(Initial, FoldFunction,
WindowFunction)`.
- Changing some test classes to use the new methods.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ymarzougui/flink FLINK-3869
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2835.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #2835
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commit df65335dd2193d8a2b956085b0f375db5eb75863
Author: Yassine Marzougui <y.marzou...@mindlytix.com>
Date: 2016-11-19T23:19:10Z
[FLINK-3869] WindowedStream.apply with FoldFunction is too restrictive
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