org.apache.tez.dag.app.dag

Class DAGScheduler

java.lang.Object

org.apache.tez.dag.app.dag.DAGScheduler

Direct Known Subclasses:

DAGSchedulerNaturalOrder, DAGSchedulerNaturalOrderControlled

public abstract class DAGScheduler
extends Object

Constructor Summary

Constructors

Constructor and Description
DAGScheduler()

Method Summary

Modifier and Type	Method and Description
void	addVertexConcurrencyLimit(TezVertexID vId, int concurrency)
int	getPriorityHighLimit(DAG dag, Vertex vertex) Get the low hight priority for a particular vertex.
int	getPriorityLowLimit(DAG dag, Vertex vertex) Get the low limit priority for a particular vertex.
void	scheduleTask(DAGEventSchedulerUpdate event)
abstract void	scheduleTaskEx(DAGEventSchedulerUpdate event)
void	taskCompleted(DAGEventSchedulerUpdate event)
abstract void	taskCompletedEx(DAGEventSchedulerUpdate event)

Methods inherited from class java.lang.Object

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

Constructor Detail

DAGScheduler

public DAGScheduler()

Method Detail

addVertexConcurrencyLimit

public void addVertexConcurrencyLimit(TezVertexID vId,
                                      int concurrency)

scheduleTask

public void scheduleTask(DAGEventSchedulerUpdate event)

taskCompleted

public void taskCompleted(DAGEventSchedulerUpdate event)

scheduleTaskEx

public abstract void scheduleTaskEx(DAGEventSchedulerUpdate event)

taskCompletedEx

public abstract void taskCompletedEx(DAGEventSchedulerUpdate event)

getPriorityLowLimit

public int getPriorityLowLimit(DAG dag,
                               Vertex vertex)

Get the low limit priority for a particular vertex.

Parameters:

vertex - to get the priority of

Returns:

the priority

getPriorityHighLimit

public int getPriorityHighLimit(DAG dag,
                                Vertex vertex)

Get the low hight priority for a particular vertex. Default to the low limit priority minus two.

Parameters:

vertex - to get the priority of

Returns:

the priority