Package org.apache.hadoop.yarn.api.protocolrecords

Class StartContainersResponse

java.lang.Object

org.apache.hadoop.yarn.api.protocolrecords.StartContainersResponse

@Public
@Stable
public abstract class StartContainersResponse
extends Object

The response sent by the NodeManager to the ApplicationMaster when asked to start an allocated container.

See Also:

• ContainerManagementProtocol.startContainers(StartContainersRequest)

Constructor Summary

Constructors

Constructor	Description
StartContainersResponse()

Method Summary

Modifier and Type	Method	Description
abstract Map<String,ByteBuffer>	getAllServicesMetaData()	Get the meta-data from all auxiliary services running on the NodeManager.
abstract Map<ContainerId,org.apache.hadoop.yarn.api.records.SerializedException>	getFailedRequests()	Get the containerId-to-exception map in which the exception indicates error from per container for failed requests
abstract List<ContainerId>	getSuccessfullyStartedContainers()	Get the list of ContainerId s of the containers that are started successfully.
static StartContainersResponse	newInstance(Map<String,ByteBuffer> servicesMetaData, List<ContainerId> succeededContainers, Map<ContainerId,org.apache.hadoop.yarn.api.records.SerializedException> failedContainers)
abstract void	setAllServicesMetaData(Map<String,ByteBuffer> allServicesMetaData)	Set to the list of auxiliary services which have been started on the NodeManager.
abstract void	setFailedRequests(Map<ContainerId,org.apache.hadoop.yarn.api.records.SerializedException> failedContainers)	Set the containerId-to-exception map in which the exception indicates error from per container for failed requests.
abstract void	setSuccessfullyStartedContainers(List<ContainerId> succeededContainers)

Methods inherited from class java.lang.Object

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

Constructor Details

StartContainersResponse

public StartContainersResponse()

Method Details

newInstance

@Private
@Unstable
public static StartContainersResponse newInstance(Map<String,ByteBuffer> servicesMetaData,
 List<ContainerId> succeededContainers,
 Map<ContainerId,org.apache.hadoop.yarn.api.records.SerializedException> failedContainers)

getSuccessfullyStartedContainers

@Public
@Stable
public abstract List<ContainerId> getSuccessfullyStartedContainers()

Get the list of ContainerId s of the containers that are started successfully.

Returns:

the list of ContainerId s of the containers that are started successfully.

See Also:

• ContainerManagementProtocol.startContainers(StartContainersRequest)

setSuccessfullyStartedContainers

@Private
@Unstable
public abstract void setSuccessfullyStartedContainers(List<ContainerId> succeededContainers)

getFailedRequests

@Public
@Stable
public abstract Map<ContainerId,org.apache.hadoop.yarn.api.records.SerializedException> getFailedRequests()

Get the containerId-to-exception map in which the exception indicates error from per container for failed requests

Returns:

map of containerId-to-exception

setFailedRequests

@Private
@Unstable
public abstract void setFailedRequests(Map<ContainerId,org.apache.hadoop.yarn.api.records.SerializedException> failedContainers)

Set the containerId-to-exception map in which the exception indicates error from per container for failed requests.

Parameters:

failedContainers - container for failed requests.

getAllServicesMetaData

@Public
@Stable
public abstract Map<String,ByteBuffer> getAllServicesMetaData()

Get the meta-data from all auxiliary services running on the NodeManager.

The meta-data is returned as a Map between the auxiliary service names and their corresponding per service meta-data as an opaque blob ByteBuffer

To be able to interpret the per-service meta-data, you should consult the documentation for the Auxiliary-service configured on the NodeManager

Returns:

a Map between the names of auxiliary services and their corresponding meta-data

setAllServicesMetaData

@Private
@Unstable
public abstract void setAllServicesMetaData(Map<String,ByteBuffer> allServicesMetaData)

Set to the list of auxiliary services which have been started on the NodeManager. This is done only once when the NodeManager starts up

Parameters:

allServicesMetaData - A map from auxiliary service names to the opaque blob ByteBuffer for that auxiliary service