spark git commit: [SPARK-11420] Updating Stddev support via Imperative Aggregate

Repository: spark Updated Branches: refs/heads/branch-1.6 68fa5c713 -> 6853ba6bf [SPARK-11420] Updating Stddev support via Imperative Aggregate switched stddev support from DeclarativeAggregate to ImperativeAggregate. Author: JihongMa Closes #9380 from

spark git commit: [SPARK-11420] Updating Stddev support via Imperative Aggregate

Repository: spark Updated Branches: refs/heads/master f5a9526fe -> d292f7483 [SPARK-11420] Updating Stddev support via Imperative Aggregate switched stddev support from DeclarativeAggregate to ImperativeAggregate. Author: JihongMa Closes #9380 from