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SPARK-11420 Updating Stddev support via Imperative Aggregate #9380

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SPARK-11420 Updating Stddev support via Imperative Aggregate #9380

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5094db0
SPARK-11420: stddev via Imperative Aggregate
JihongMA Oct 30, 2015
0113626
handle null
JihongMA Oct 30, 2015
24195fe
address comment
JihongMA Nov 3, 2015
c360f11
rebase upstream
JihongMA Nov 3, 2015
4ca8b19
minor fix
JihongMA Nov 3, 2015
747a911
rebase with upstream
JihongMA Nov 4, 2015
57eeeed
rebase with upstream to revert stddev as alias of stddev_samp
JihongMA Nov 4, 2015
402971c
style fix
JihongMA Nov 4, 2015
e3417aa
rebase with upstream
JihongMA Nov 5, 2015
b69d1e6
address comment
JihongMA Nov 6, 2015
eea699a
rebase with upstream & handle NaN
JihongMA Nov 11, 2015
dc0558b
fix tests
JihongMA Nov 11, 2015
ca407bc
fix R test
JihongMA Nov 12, 2015
7a239ec
fix test_sparkSQL.R
JihongMA Nov 12, 2015
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rebase with upstream
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@JihongMA
JihongMA committed Nov 5, 2015
commit e3417aab734f6be52d17af41aa1ebf9b7738e452
2 changes: 1 addition & 1 deletion ...src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/CentralMomentAgg.scala
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Expand Up @@ -207,7 +207,7 @@ abstract class CentralMomentAgg(child: Expression) extends ImperativeAggregate w
* @param centralMoments Length `momentOrder + 1` array of central moments (un-normalized)
* needed to compute the aggregate stat.
*/
def getStatistic(n: Double, mean: Double, centralMoments: Array[Double]): Double
def getStatistic(n: Double, mean: Double, centralMoments: Array[Double]): Any

override final def eval(buffer: InternalRow): Any = {
val n = buffer.getDouble(nOffset)
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