GitHub user vasia opened a pull request:
https://github.com/apache/flink/pull/1874
[FLINK-3735] Make DataSetUnionRule match only for union-all
Currently `UnionToDistinctRule` converts all unions to union-all +
distinct, so this is just an extra check to make sure that unions are not
translated in case the rule is removed or won't match.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/vasia/flink union-all
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/1874.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 #1874
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commit a4c36d160707c004e60b8f62f45c54d352e31233
Author: vasia <[email protected]>
Date: 2016-04-12T13:11:54Z
[FLINK-3735] Make DataSetUnionRule match only for union-all
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