GitHub user MechCoder opened a pull request:
https://github.com/apache/spark/pull/7222
[SPARK-8823] Optimizations for SparseVector dot products
Follow up for https://github.com/apache/spark/pull/5946
Currently we iterate over indices and values in SparseVector and can be
vectorized.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/MechCoder/spark sparse_optim
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/7222.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 #7222
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commit 4030782713565315517259cc6e7bbe3c471d6c67
Author: MechCoder <[email protected]>
Date: 2015-07-04T07:04:29Z
[SPARK-8823] Optimizations for SparseVector dot products
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