GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/16988
[SPARK-19658] [SQL] Set NumPartitions of RepartitionByExpression In Analyzer
### What changes were proposed in this pull request?
Currently, if `NumPartitions` is not set in RepartitionByExpression, we
will set it using `spark.sql.shuffle.partitions` during Planner. However, this
is not following the general resolution process. This PR is to set it in
`Analyzer` and then `Optimizer` can use the value for plan optimization.
### How was this patch tested?
Added a test case.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark resolveRepartition
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/16988.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 #16988
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commit b3df296f9e2ca9eeb61b146bf1cd5611fce0f253
Author: Xiao Li <gatorsm...@gmail.com>
Date: 2017-02-19T04:28:39Z
Merge remote-tracking branch 'upstream/master' into resolveRepartition
commit c276917bfb631f2a75ea5b3036933f57968abe56
Author: Xiao Li <gatorsm...@gmail.com>
Date: 2017-02-19T07:55:02Z
fix.
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