Package org.apache.hadoop.yarn.server.scheduler

Class OpportunisticContainerAllocator.ContainerIdGenerator

java.lang.Object

org.apache.hadoop.yarn.server.scheduler.OpportunisticContainerAllocator.ContainerIdGenerator

Enclosing class:

OpportunisticContainerAllocator

public static class OpportunisticContainerAllocator.ContainerIdGenerator
extends java.lang.Object

A Container Id Generator.

Field Summary

Fields

Modifier and Type	Field	Description
protected java.util.concurrent.atomic.AtomicLong	containerIdCounter

Constructor Summary

Constructors

Constructor	Description
ContainerIdGenerator()

Method Summary

Modifier and Type	Method	Description
long	generateContainerId()	Generates a new long value.
void	resetContainerIdCounter(long containerIdStart)	This method can reset the generator to a specific value.

Methods inherited from class java.lang.Object

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

Field Detail

containerIdCounter

protected volatile java.util.concurrent.atomic.AtomicLong containerIdCounter

Constructor Detail

ContainerIdGenerator

public ContainerIdGenerator()

Method Detail

resetContainerIdCounter

public void resetContainerIdCounter(long containerIdStart)

This method can reset the generator to a specific value.

Parameters:

containerIdStart - containerId

generateContainerId

public long generateContainerId()

Generates a new long value. Default implementation increments the underlying AtomicLong. Sub classes are encouraged to over-ride this behaviour.

Returns:

Counter.