GitHub user ChengXiangLi opened a pull request:
https://github.com/apache/flink/pull/1746
[FLINK-3474] support partial aggregate
This PR includes:
* New aggregate interface which support partial aggregate.
* Simple aggregate function implementation, such as SUM/AVG/COUNT/MIN/MAX.
* DataSetAggregateRule which translate logical calcite aggregate node to
Flink operator functions.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/ChengXiangLi/flink partialAggregate
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1746.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 #1746
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commit a146ff09990ffe612a02c6441a13f1062c6426a9
Author: chengxiang li <[email protected]>
Date: 2016-03-01T02:47:35Z
[FLINK-3474] support partial aggregate
d
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