GitHub user zhangminglei opened a pull request:
https://github.com/apache/flink/pull/4215
[FLINK] [optimizer] Remove duplicated test utility reducer in optimizer
Removed ```DummyReducer``` class, keep ```SelectOneReducer``` instead.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zhangminglei/flink flink-6789
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4215.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 #4215
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commit 392335413cdcbf5cc35a9d949c432605f14d17da
Author: zhangminglei <zml13856086...@163.com>
Date: 2017-06-29T03:49:30Z
[FLINK] [optimizer] Remove duplicated test utility reducer in optimizer
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