aggregate

Type Members

1. abstract class AggregationIterator extends Iterator[UnsafeRow] with Logging

   The base class of SortBasedAggregationIterator and TungstenAggregationIterator.

2. sealed trait BufferSetterGetterUtils extends AnyRef

   A helper trait used to create specialized setter and getter for types supported by org.apache.spark.sql.execution.UnsafeFixedWidthAggregationMap's buffer.

3. case class SortBasedAggregateExec(requiredChildDistributionExpressions: Option[Seq[Expression]], groupingExpressions: Seq[NamedExpression], aggregateExpressions: Seq[AggregateExpression], aggregateAttributes: Seq[Attribute], initialInputBufferOffset: Int, resultExpressions: Seq[NamedExpression], child: SparkPlan) extends SparkPlan with UnaryExecNode with Product with Serializable

4. class SortBasedAggregationIterator extends AggregationIterator

   An iterator used to evaluate AggregateFunction.

5. case class TungstenAggregate(requiredChildDistributionExpressions: Option[Seq[Expression]], groupingExpressions: Seq[NamedExpression], aggregateExpressions: Seq[AggregateExpression], aggregateAttributes: Seq[Attribute], initialInputBufferOffset: Int, resultExpressions: Seq[NamedExpression], child: SparkPlan) extends SparkPlan with UnaryExecNode with CodegenSupport with Product with Serializable

6. class TungstenAggregationIterator extends AggregationIterator with Logging

   An iterator used to evaluate aggregate functions.

7. case class TypedAggregateExpression(aggregator: expressions.Aggregator[Any, Any, Any], inputDeserializer: Option[Expression], bufferSerializer: Seq[NamedExpression], bufferDeserializer: Expression, outputSerializer: Seq[Expression], outputExternalType: DataType, dataType: DataType) extends DeclarativeAggregate with NonSQLExpression with Product with Serializable

   A helper class to hook Aggregator into the aggregation system.

8. class TypedAverage[IN] extends expressions.Aggregator[IN, (Double, Long), Double]

9. class TypedCount[IN] extends expressions.Aggregator[IN, Long, Long]

10. class TypedSumDouble[IN] extends expressions.Aggregator[IN, Double, Double]

11. class TypedSumLong[IN] extends expressions.Aggregator[IN, Long, Long]

12. class VectorizedHashMapGenerator extends AnyRef

    This is a helper class to generate an append-only vectorized hash map that can act as a 'cache' for extremely fast key-value lookups while evaluating aggregates (and fall back to the BytesToBytesMap if a given key isn't found).