aggregate

Type Members

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

   The base class of SortBasedAggregationIterator.

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 SortBasedAggregate(requiredChildDistributionExpressions: Option[Seq[Expression]], groupingExpressions: Seq[NamedExpression], nonCompleteAggregateExpressions: Seq[AggregateExpression], nonCompleteAggregateAttributes: Seq[Attribute], completeAggregateExpressions: Seq[AggregateExpression], completeAggregateAttributes: Seq[Attribute], initialInputBufferOffset: Int, resultExpressions: Seq[NamedExpression], child: SparkPlan) extends SparkPlan with UnaryNode 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], nonCompleteAggregateExpressions: Seq[AggregateExpression], nonCompleteAggregateAttributes: Seq[Attribute], completeAggregateExpressions: Seq[AggregateExpression], completeAggregateAttributes: Seq[Attribute], initialInputBufferOffset: Int, resultExpressions: Seq[NamedExpression], child: SparkPlan) extends SparkPlan with UnaryNode with Product with Serializable

6. class TungstenAggregationIterator extends Iterator[UnsafeRow] with Logging

   An iterator used to evaluate aggregate functions.

7. case class TypedAggregateExpression(aggregator: expressions.Aggregator[Any, Any, Any], aEncoder: Option[ExpressionEncoder[Any]], unresolvedBEncoder: ExpressionEncoder[Any], cEncoder: ExpressionEncoder[Any], children: Seq[Attribute], mutableAggBufferOffset: Int, inputAggBufferOffset: Int) extends ImperativeAggregate with Logging with Product with Serializable

   This class is a rough sketch of how to hook Aggregator into the Aggregation system.