Github user SparkQA commented on the pull request:
https://github.com/apache/spark/pull/9003#issuecomment-150324361
**[Test build #44164 has
finished](https://amplab.cs.berkeley.edu/jenkins/job/SparkPullRequestBuilder/44164/consoleFull)**
for PR 9003 at commit
[`2c9046f`](https://github.com/apache/spark/commit/2c9046ff952d80ff6c9382fc9e1ba31dc8ade7b8).
* This patch **fails Scala style tests**.
* This patch **does not merge cleanly**.
* This patch adds the following public classes _(experimental)_:\n *
`abstract class CentralMomentAgg(child: Expression) extends ImperativeAggregate
with Serializable `\n * `abstract class SecondMoment(child: Expression)
extends CentralMomentAgg(child) `\n * `case class Variance(child: Expression,
mutableAggBufferOffset: Int = 0,`\n * `case class VarianceSamp(child:
Expression, mutableAggBufferOffset: Int = 0,`\n * `case class
VariancePop(child: Expression, mutableAggBufferOffset: Int = 0,`\n * `case
class Skewness(child: Expression, mutableAggBufferOffset: Int = 0,`\n * `case
class Kurtosis(child: Expression, mutableAggBufferOffset: Int = 0,`\n * `case
class Kurtosis(child: Expression) extends UnaryExpression with
AggregateExpression `\n * `case class Skewness(child: Expression) extends
UnaryExpression with AggregateExpression `\n * `case class Variance(child:
Expression) extends UnaryExpression with AggregateExpression `\n * `case class
VariancePop(child: Expression
) extends UnaryExpression with AggregateExpression `\n * `case class
VarianceSamp(child: Expression) extends UnaryExpression with
AggregateExpression `\n
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