physical

Type Members

1. case class ClusteredDistribution(clustering: Seq[Expression]) extends Distribution with Product with Serializable

   Represents data where tuples that share the same values for the clustering Expressions will be co-located.

2. sealed trait Distribution extends AnyRef

   Specifies how tuples that share common expressions will be distributed when a query is executed in parallel on many machines.

3. case class HashPartitioning(expressions: Seq[Expression], numPartitions: Int) extends Expression with Partitioning with Unevaluable with Product with Serializable

   Represents a partitioning where rows are split up across partitions based on the hash of expressions.

4. case class OrderedDistribution(ordering: Seq[SortOrder]) extends Distribution with Product with Serializable

   Represents data where tuples have been ordered according to the ordering Expressions.

5. case class OrderlessHashPartitioning(expressions: Seq[Expression], numPartitions: Int) extends Expression with Partitioning with Unevaluable with Product with Serializable

   Represents a partitioning where rows are split up across partitions based on the hash of expressions.

6. sealed trait Partitioning extends AnyRef

   Describes how an operator's output is split across partitions.

7. case class PartitioningCollection(partitionings: Seq[Partitioning]) extends Expression with Partitioning with Unevaluable with Product with Serializable

   A collection of Partitionings that can be used to describe the partitioning scheme of the output of a physical operator.

8. case class RangePartitioning(ordering: Seq[SortOrder], numPartitions: Int) extends Expression with Partitioning with Unevaluable with Product with Serializable

   Represents a partitioning where rows are split across partitions based on some total ordering of the expressions specified in ordering.

9. case class RoundRobinPartitioning(numPartitions: Int) extends Partitioning with Product with Serializable

   Represents a partitioning where rows are distributed evenly across output partitions by starting from a random target partition number and distributing rows in a round-robin fashion.

10. case class UnknownPartitioning(numPartitions: Int) extends Partitioning with Product with Serializable