GitHub user greghogan opened a pull request:
https://github.com/apache/flink/pull/3256
[FLINK-2883] [docs] Add documentation to forbid key-modifying ReduceFunction
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/greghogan/flink
2883_add_documentation_to_forbid_keymodifying_reducefunction
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/3256.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 #3256
commit 2a858819e2163a4c935521670d766ebaaba5b99d
Author: Greg Hogan
Date: 2017-02-02T21:15:52Z
[FLINK-2883] [docs] Add documentation to forbid key-modifying ReduceFunction
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