org.apache.spark.graphx

Interface PartitionStrategy

All Superinterfaces:

java.io.Serializable

All Known Implementing Classes:

PartitionStrategy.CanonicalRandomVertexCut$, PartitionStrategy.EdgePartition1D$, PartitionStrategy.EdgePartition2D$, PartitionStrategy.RandomVertexCut$

public interface PartitionStrategy
extends scala.Serializable

Represents the way edges are assigned to edge partitions based on their source and destination vertex IDs.

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	PartitionStrategy.CanonicalRandomVertexCut$ Assigns edges to partitions by hashing the source and destination vertex IDs in a canonical direction, resulting in a random vertex cut that colocates all edges between two vertices, regardless of direction.
static class	PartitionStrategy.EdgePartition1D$ Assigns edges to partitions using only the source vertex ID, colocating edges with the same source.
static class	PartitionStrategy.EdgePartition2D$ Assigns edges to partitions using a 2D partitioning of the sparse edge adjacency matrix, guaranteeing a 2 * sqrt(numParts) bound on vertex replication.
static class	PartitionStrategy.RandomVertexCut$ Assigns edges to partitions by hashing the source and destination vertex IDs, resulting in a random vertex cut that colocates all same-direction edges between two vertices.

Method Summary

Modifier and Type	Method and Description
int	getPartition(long src, long dst, int numParts) Returns the partition number for a given edge.

Method Detail

getPartition

int getPartition(long src,
                 long dst,
                 int numParts)

Returns the partition number for a given edge.