Package org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.numa

Class NumaResourceAllocator

java.lang.Object

org.apache.hadoop.yarn.server.nodemanager.containermanager.linux.resources.numa.NumaResourceAllocator

public class NumaResourceAllocator
extends java.lang.Object

NUMA Resources Allocator reads the NUMA topology and assigns NUMA nodes to the containers.

Constructor Summary

Constructors

Constructor	Description
NumaResourceAllocator(Context context)

Method Summary

Modifier and Type	Method	Description
NumaResourceAllocation	allocateNumaNodes(Container container)	Allocates the available NUMA nodes for the requested containerId with resource in a round robin fashion.
java.lang.String	executeNGetCmdOutput(org.apache.hadoop.conf.Configuration conf)
void	init(org.apache.hadoop.conf.Configuration conf)
void	recoverNumaResource(org.apache.hadoop.yarn.api.records.ContainerId containerId)	Recovers assigned numa resources.
void	releaseNumaResource(org.apache.hadoop.yarn.api.records.ContainerId containerId)	Release assigned NUMA resources for the container.

Methods inherited from class java.lang.Object

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

Constructor Detail

NumaResourceAllocator

public NumaResourceAllocator(Context context)

Method Detail

init

public void init(org.apache.hadoop.conf.Configuration conf)
          throws org.apache.hadoop.yarn.exceptions.YarnException

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

executeNGetCmdOutput

@VisibleForTesting
public java.lang.String executeNGetCmdOutput(org.apache.hadoop.conf.Configuration conf)
                                      throws org.apache.hadoop.yarn.exceptions.YarnException

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

allocateNumaNodes

public NumaResourceAllocation allocateNumaNodes(Container container)
                                         throws ResourceHandlerException

Allocates the available NUMA nodes for the requested containerId with resource in a round robin fashion.

Parameters:

container - the container to allocate NUMA resources

Returns:

the assigned NUMA Node info or null if resources not available.

Throws:

ResourceHandlerException - when failed to store NUMA resources

releaseNumaResource

public void releaseNumaResource(org.apache.hadoop.yarn.api.records.ContainerId containerId)
                         throws ResourceHandlerException

Release assigned NUMA resources for the container.

Parameters:

containerId - the container ID

Throws:

ResourceHandlerException - when failed to release numa resource

recoverNumaResource

public void recoverNumaResource(org.apache.hadoop.yarn.api.records.ContainerId containerId)

Recovers assigned numa resources.

Parameters:

containerId - the container ID to recover resources