GitHub user piffall opened a pull request:
https://github.com/apache/spark/pull/14345
Added new high-order function RDD::cartesianFilter(other)(f).
## What changes were proposed in this pull request?
Add a new high-order function to RDD to make cartesian filter pairs in one
step. Scala and Java API only.
## How was this patch tested?
This patch include a test in JavaAPISuite
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/piffall/spark master
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14345.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 #14345
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commit 7c06180ab7a08a19522c5467056bb37514264f86
Author: Cristòfol Torrens <[email protected]>
Date: 2016-07-25T09:23:33Z
Added new high-order function RDD::cartesianFilter(other)(f).
This method do the same as:
rdd1.cartesian(other).filter(f)
but in a single step.
Is almost 2x faster on large RDDs cartesian.
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