GitHub user chenghao-intel opened a pull request:
https://github.com/apache/spark/pull/8652
[SPARK-10484][SQL] Optimize the cartesian join with broadcast join for some
cases
In some cases, we can broadcast the smaller relation in cartesian join,
which improve the performance significantly.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/chenghao-intel/spark cartesian
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/8652.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 #8652
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commit 98efb3deada40f670a02f321cff0bcc62cb259a9
Author: Cheng Hao <hao.ch...@intel.com>
Date: 2015-09-08T07:19:00Z
optimize the cartesian join with broadcast join for some cases
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