org.apache.tez.dag.api

Class TaskLocationHint

java.lang.Object

org.apache.tez.dag.api.TaskLocationHint

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class TaskLocationHint
extends Object

Describes the placements hints for tasks. The system will make a best-effort attempt to run the tasks close to the specified locations.

Method Summary

Methods

Modifier and Type	Method and Description
static TaskLocationHint	createTaskLocationHint(org.apache.hadoop.yarn.api.records.ContainerId containerId) Provide a location hint using a container to which the task may be affinitized Tez will try to run the task on that container or node local to it
static TaskLocationHint	createTaskLocationHint(Set<String> hosts, Set<String> racks) Provides a location hint with nodes and racks at which the task may be executed.
boolean	equals(Object obj)
org.apache.hadoop.yarn.api.records.ContainerId	getAffinitizedContainer()
Set<String>	getHosts()
Set<String>	getRacks()
int	hashCode()

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Method Detail

createTaskLocationHint

public static TaskLocationHint createTaskLocationHint(org.apache.hadoop.yarn.api.records.ContainerId containerId)

Provide a location hint using a container to which the task may be affinitized Tez will try to run the task on that container or node local to it

createTaskLocationHint

public static TaskLocationHint createTaskLocationHint(Set<String> hosts,
                                      Set<String> racks)

Provides a location hint with nodes and racks at which the task may be executed. Tez will try to execute the task at those locations

getAffinitizedContainer

public org.apache.hadoop.yarn.api.records.ContainerId getAffinitizedContainer()

getHosts

public Set<String> getHosts()

getRacks

public Set<String> getRacks()

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object