Bulk Operation

SPARK-4366 Improved multi-column counting

SPARK-4366 Spark StdDev/Variance defaults are incompatible with Hive

SPARK-4366 Restore the 1.5's behavior of planning a single distinct aggregation.

SPARK-4366 variance should alias var_samp instead of var_pop

SPARK-4366 Support single distinct count on multiple columns

SPARK-4366 Remove use of KVIterator in SortBasedAggregationIterator

SPARK-4366 When planning queries without partial aggregation support, we should try to use TungstenAggregate.

SPARK-4366 Better group distinct columns in query compilation

SPARK-4366 Support ImperativeAggregates in TungstenAggregate

SPARK-4366 Partial Aggregation Support for Hive UDAF

SPARK-4366 Reduce duplication in Aggregate2's expression rewriting logic

SPARK-4366 .Refactor AggregateFunction2 and AlgebraicAggregate interfaces to improve code clarity

SPARK-4366 use new aggregate interface for hive UDAF

SPARK-4366 MutableProjection should evaluate all expressions first and then update the mutable row

SPARK-4366 We need to explicitly use transformDown when rewrite aggregation results

SPARK-4366 Eliminate hash table lookup if there is no grouping key in aggregation.

SPARK-4366 The simpleString of TungstenAggregate does not show its output

SPARK-4366 Remove AggregateExpression1 and Aggregate Operator used to evaluate AggregateExpression1s

SPARK-4366 TungstenAggregate should also accept InternalRow instead of just UnsafeRow

SPARK-4366 approx count distinct function

SPARK-4366 first/last aggregate NULL behavior

SPARK-4366 Use sqlContext.udf to register UDAFs.

SPARK-4366 Cleanup Hybrid Aggregate Operator.

SPARK-4366 Remove the placeholder attributes used in the aggregation buffers

SPARK-4366 Refactor new aggregation code to reduce the times of checking compatibility

SPARK-4366 UDAF cleanup for 1.5

SPARK-4366 collect_set and collect_list aggregate functions

SPARK-4366 histogram_numeric aggregate function

SPARK-4366 percentile and percentile_approx aggregate functions

SPARK-4366 corr aggregate functions

SPARK-4366 covar_pop and covar_samp aggregate functions

SPARK-4366 variance, var_pop, and var_samp aggregate functions

SPARK-4366 cleanup comments, code style, naming typo for the new aggregation

SPARK-4366 Fix the false negative of Aggregate2Sort and FinalAndCompleteAggregate2Sort's missingInput

SPARK-4366 Audit both built-in aggregate function and UDAF interface before 1.5.0 release

SPARK-4366 Supporting multiple DISTINCT columns

SPARK-4366 Hybrid aggregate operator using unsafe row

SPARK-4366 HiveUDAF support for AggregateFunction2

SPARK-4366 stddev_pop and stddev_samp aggregate functions

SPARK-4366 Partial aggregation support the DISTINCT aggregation

SPARK-4366 Spark SQL SELECT COUNT DISTINCT optimization

SPARK-4366 Simplify the Aggregation Function implementation

SPARK-4366 Support Scala/Java UDAF

SPARK-4366 Sort-based Aggregation