Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/6113#issuecomment-101931910
[Test build #32678 has
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/32678/consoleFull)
for PR 6113 at commit
[`3e9fa1d`](https://github.com/apache/spark/commit/3e9fa1d99b2579b1c06153b755abbe3b8351349f).
* This patch **fails PySpark unit tests**.
* This patch merges cleanly.
* This patch adds the following public classes _(experimental)_:
* `[Polynomial
expansion](http://en.wikipedia.org/wiki/Polynomial_expansion) is the process of
expanding your features into a polynomial space, which is formulated by an
n-degree combination of original dimensions. A
[PolynomialExpansion](api/scala/index.html#org.apache.spark.ml.feature.PolynomialExpansion)
class provides this functionality. The example below shows how to expand your
features into a 3-degree polynomial space.`
* `public class JavaPolynomialExpansionSuite `
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