org.apache.tez.dag.library.vertexmanager

Enum FairShuffleVertexManager.FairRoutingType

java.lang.Object

java.lang.Enum<FairShuffleVertexManager.FairRoutingType>

org.apache.tez.dag.library.vertexmanager.FairShuffleVertexManager.FairRoutingType

All Implemented Interfaces:

Serializable, Comparable<FairShuffleVertexManager.FairRoutingType>

Enclosing class:

FairShuffleVertexManager

public static enum FairShuffleVertexManager.FairRoutingType
extends Enum<FairShuffleVertexManager.FairRoutingType>

Enables automatic parallelism determination for the vertex. Based on input data statistics the parallelism is adjusted to a desired level.

Enum Constant Summary

Enum Constants

Enum Constant and Description
FAIR_PARALLELISM Based on input data statistics the parallelism is adjusted to a desired level by having one destination task process multiple small partitions and multiple destination tasks process one large partition.
NONE Don't do any fair routing.
REDUCE_PARALLELISM TEZ-2962 Based on input data statistics the parallelism is decreased to a desired level by having one destination task process multiple consecutive partitions.

Method Summary

Modifier and Type	Method and Description
boolean	enabled()
boolean	fairParallelismEnabled()
static FairShuffleVertexManager.FairRoutingType	fromString(String type)
String	getType()
boolean	reduceParallelismEnabled()
static FairShuffleVertexManager.FairRoutingType	valueOf(String name) Returns the enum constant of this type with the specified name.
static FairShuffleVertexManager.FairRoutingType[]	values() Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

NONE

public static final FairShuffleVertexManager.FairRoutingType NONE

Don't do any fair routing.

REDUCE_PARALLELISM

public static final FairShuffleVertexManager.FairRoutingType REDUCE_PARALLELISM

TEZ-2962 Based on input data statistics the parallelism is decreased to a desired level by having one destination task process multiple consecutive partitions.

FAIR_PARALLELISM

public static final FairShuffleVertexManager.FairRoutingType FAIR_PARALLELISM

Based on input data statistics the parallelism is adjusted to a desired level by having one destination task process multiple small partitions and multiple destination tasks process one large partition. Only works when there is one bipartite edge.

Method Detail

values

public static FairShuffleVertexManager.FairRoutingType[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (FairShuffleVertexManager.FairRoutingType c : FairShuffleVertexManager.FairRoutingType.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static FairShuffleVertexManager.FairRoutingType valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

getType

public final String getType()

reduceParallelismEnabled

public boolean reduceParallelismEnabled()

fairParallelismEnabled

public boolean fairParallelismEnabled()

enabled

public boolean enabled()

fromString

public static FairShuffleVertexManager.FairRoutingType fromString(String type)