GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/18298
[SPARK-21091][SQL] Move constraint code into QueryPlanConstraints
## What changes were proposed in this pull request?
This patch moves constraint related code into a separate trait
QueryPlanConstraints, so we don't litter QueryPlan with a lot of constraint
private functions.
## How was this patch tested?
This is a simple move refactoring and should be covered by existing tests.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark SPARK-21091
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18298.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 #18298
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commit bbcd26f0cdfaba602eacbcac79a563e06cb33736
Author: Reynold Xin <[email protected]>
Date: 2017-06-14T06:41:29Z
[SPARK-21091][SQL] Move constraint code into QueryPlanConstraints
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