GitHub user rxin opened a pull request:
https://github.com/apache/spark/pull/7733
[SPARK-9418][SQL] Use sort-merge join as the default shuffle join.
Sort-merge join is more robust in Spark since sorting can be made using the
Tungsten sort operator.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/rxin/spark smj
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7733.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 #7733
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