GitHub user zero323 opened a pull request:
https://github.com/apache/spark/pull/14614
[SPARK-17027][ML] Avoid integer overflow in PolynomialExpansion.getPolySize
## What changes were proposed in this pull request?
Replaces custom choose function with
o.a.commons.math3.CombinatoricsUtils.binomialCoefficient
## How was this patch tested?
Spark unit tests
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/zero323/spark SPARK-17027
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/14614.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 #14614
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commit 47170b80cad68baf073fff54f5505124508267fd
Author: zero323 <[email protected]>
Date: 2016-08-11T17:44:32Z
Replace PolynomialExpansion.choose with
CombinatoricsUtils.binomialCoefficient
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