Github user aalexandrov commented on the pull request:
https://github.com/apache/flink/pull/1517#issuecomment-208083609
We've summarized the use-case around the hash aggregation experiments in [a
blog post on the Peel
webpage](http://peel-framework.org/2016/04/07/hash-aggregations-in-flink.html).
If you follow the instructions from the **Repeatability** section you
should be able to reproduce the results on other environments without too much
hastle.
I hope that this will be the first of many Flink-related public Peel
bundles.
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