org.apache.hadoop.yarn.client.api.impl
Class YarnClientImpl

java.lang.Object
  org.apache.hadoop.service.AbstractService
      org.apache.hadoop.yarn.client.api.YarnClient
          org.apache.hadoop.yarn.client.api.impl.YarnClientImpl

All Implemented Interfaces:

Closeable, org.apache.hadoop.service.Service

@InterfaceAudience.Private
@InterfaceStability.Unstable
public class YarnClientImpl
extends YarnClient

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Field Summary

protected org.apache.hadoop.yarn.api.ApplicationClientProtocol	rmClient
protected long	submitPollIntervalMillis

Constructor Summary

YarnClientImpl()

Method Summary

YarnClientApplication	createApplication() Obtain a YarnClientApplication for a new application, which in turn contains the ApplicationSubmissionContext and GetNewApplicationResponse objects.
List<org.apache.hadoop.yarn.api.records.QueueInfo>	getAllQueues() Get information (QueueInfo) about all queues, recursively if there is a hierarchy
org.apache.hadoop.security.token.Token<org.apache.hadoop.yarn.security.AMRMTokenIdentifier>	getAMRMToken(org.apache.hadoop.yarn.api.records.ApplicationId appId) Get the AMRM token of the application.
org.apache.hadoop.yarn.api.records.ApplicationReport	getApplicationReport(org.apache.hadoop.yarn.api.records.ApplicationId appId) Get a report of the given Application.
List<org.apache.hadoop.yarn.api.records.ApplicationReport>	getApplications() Get a report (ApplicationReport) of all Applications in the cluster.
List<org.apache.hadoop.yarn.api.records.ApplicationReport>	getApplications(EnumSet<org.apache.hadoop.yarn.api.records.YarnApplicationState> applicationStates) Get a report (ApplicationReport) of Applications matching the given application states in the cluster.
List<org.apache.hadoop.yarn.api.records.ApplicationReport>	getApplications(Set<String> applicationTypes) Get a report (ApplicationReport) of Applications matching the given application types in the cluster.
List<org.apache.hadoop.yarn.api.records.ApplicationReport>	getApplications(Set<String> applicationTypes, EnumSet<org.apache.hadoop.yarn.api.records.YarnApplicationState> applicationStates) Get a report (ApplicationReport) of Applications matching the given application types and application states in the cluster.
List<org.apache.hadoop.yarn.api.records.QueueInfo>	getChildQueueInfos(String parent) Get information (QueueInfo) about all the immediate children queues of the given queue
List<org.apache.hadoop.yarn.api.records.NodeReport>	getNodeReports(org.apache.hadoop.yarn.api.records.NodeState... states) Get a report of nodes (NodeReport) in the cluster.
List<org.apache.hadoop.yarn.api.records.QueueUserACLInfo>	getQueueAclsInfo() Get information about acls for current user on all the existing queues.
org.apache.hadoop.yarn.api.records.QueueInfo	getQueueInfo(String queueName) Get information (QueueInfo) about a given queue.
org.apache.hadoop.yarn.api.records.Token	getRMDelegationToken(org.apache.hadoop.io.Text renewer) Get a delegation token so as to be able to talk to YARN using those tokens.
List<org.apache.hadoop.yarn.api.records.QueueInfo>	getRootQueueInfos() Get information (QueueInfo) about top level queues.
org.apache.hadoop.yarn.api.records.YarnClusterMetrics	getYarnClusterMetrics() Get metrics (YarnClusterMetrics) about the cluster.
void	killApplication(org.apache.hadoop.yarn.api.records.ApplicationId applicationId) Kill an application identified by given ID.
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)
protected void	serviceStart()
protected void	serviceStop()
void	setRMClient(org.apache.hadoop.yarn.api.ApplicationClientProtocol rmClient)
org.apache.hadoop.yarn.api.records.ApplicationId	submitApplication(org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext appContext) Submit a new application to YARN. It is a blocking call, such that it will not return ApplicationId until the submitted application has been submitted and accepted by the ResourceManager.

Methods inherited from class org.apache.hadoop.yarn.client.api.YarnClient

createYarnClient

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Field Detail

rmClient

protected org.apache.hadoop.yarn.api.ApplicationClientProtocol rmClient

submitPollIntervalMillis

protected long submitPollIntervalMillis

Constructor Detail

YarnClientImpl

public YarnClientImpl()

Method Detail

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws Exception

Overrides:

serviceInit in class org.apache.hadoop.service.AbstractService

Throws:

Exception

serviceStart

protected void serviceStart()
                     throws Exception

Overrides:

serviceStart in class org.apache.hadoop.service.AbstractService

Throws:

Exception

serviceStop

protected void serviceStop()
                    throws Exception

Overrides:

serviceStop in class org.apache.hadoop.service.AbstractService

Throws:

Exception

createApplication

public YarnClientApplication createApplication()
                                        throws org.apache.hadoop.yarn.exceptions.YarnException,
                                               IOException

Description copied from class: YarnClient

Obtain a YarnClientApplication for a new application, which in turn contains the ApplicationSubmissionContext and GetNewApplicationResponse objects.

Specified by:

createApplication in class YarnClient

Returns:

YarnClientApplication built for a new application

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

submitApplication

public org.apache.hadoop.yarn.api.records.ApplicationId submitApplication(org.apache.hadoop.yarn.api.records.ApplicationSubmissionContext appContext)
                                                                   throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                          IOException

Description copied from class: YarnClient

Submit a new application to YARN. It is a blocking call, such that it will not return ApplicationId until the submitted application has been submitted and accepted by the ResourceManager.

Specified by:

submitApplication in class YarnClient

Parameters:

appContext - ApplicationSubmissionContext containing all the details needed to submit a new application

Returns:

ApplicationId of the accepted application

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

See Also:

YarnClient.createApplication()

killApplication

public void killApplication(org.apache.hadoop.yarn.api.records.ApplicationId applicationId)
                     throws org.apache.hadoop.yarn.exceptions.YarnException,
                            IOException

Description copied from class: YarnClient

Kill an application identified by given ID.

Specified by:

killApplication in class YarnClient

Parameters:

applicationId - ApplicationId of the application that needs to be killed

Throws:

org.apache.hadoop.yarn.exceptions.YarnException - in case of errors or if YARN rejects the request due to access-control restrictions.

IOException

See Also:

YarnClient.getQueueAclsInfo()

getApplicationReport

public org.apache.hadoop.yarn.api.records.ApplicationReport getApplicationReport(org.apache.hadoop.yarn.api.records.ApplicationId appId)
                                                                          throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                 IOException

Description copied from class: YarnClient

Get a report of the given Application.

In secure mode, YARN verifies access to the application, queue etc. before accepting the request.

If the user does not have VIEW_APP access then the following fields in the report will be set to stubbed values:

• host - set to "N/A"
• RPC port - set to -1
• client token - set to "N/A"
• diagnostics - set to "N/A"
• tracking URL - set to "N/A"
• original tracking URL - set to "N/A"
• resource usage report - all values are -1

Specified by:

getApplicationReport in class YarnClient

Parameters:

appId - ApplicationId of the application that needs a report

Returns:

application report

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getAMRMToken

public org.apache.hadoop.security.token.Token<org.apache.hadoop.yarn.security.AMRMTokenIdentifier> getAMRMToken(org.apache.hadoop.yarn.api.records.ApplicationId appId)
                                                                                                         throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                                                IOException

Description copied from class: YarnClient

Get the AMRM token of the application.

The AMRM token is required for AM to RM scheduling operations. For managed Application Masters Yarn takes care of injecting it. For unmanaged Applications Masters, the token must be obtained via this method and set in the UserGroupInformation of the current user.

The AMRM token will be returned only if all the following conditions are met:

the requester is the owner of the ApplicationMaster

the application master is an unmanaged ApplicationMaster

the application master is in ACCEPTED state

Else this method returns NULL.

Specified by:

getAMRMToken in class YarnClient

Parameters:

appId - ApplicationId of the application to get the AMRM token

Returns:

the AMRM token if available

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getApplications

public List<org.apache.hadoop.yarn.api.records.ApplicationReport> getApplications()
                                                                           throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                  IOException

Description copied from class: YarnClient

Get a report (ApplicationReport) of all Applications in the cluster.

If the user does not have VIEW_APP access for an application then the corresponding report will be filtered as described in YarnClient.getApplicationReport(ApplicationId).

Specified by:

getApplications in class YarnClient

Returns:

a list of reports of all running applications

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getApplications

public List<org.apache.hadoop.yarn.api.records.ApplicationReport> getApplications(Set<String> applicationTypes)
                                                                           throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                  IOException

Description copied from class: YarnClient

Get a report (ApplicationReport) of Applications matching the given application types in the cluster.

If the user does not have VIEW_APP access for an application then the corresponding report will be filtered as described in YarnClient.getApplicationReport(ApplicationId).

Specified by:

getApplications in class YarnClient

Returns:

a list of reports of applications

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getApplications

public List<org.apache.hadoop.yarn.api.records.ApplicationReport> getApplications(EnumSet<org.apache.hadoop.yarn.api.records.YarnApplicationState> applicationStates)
                                                                           throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                  IOException

Description copied from class: YarnClient

Get a report (ApplicationReport) of Applications matching the given application states in the cluster.

If the user does not have VIEW_APP access for an application then the corresponding report will be filtered as described in YarnClient.getApplicationReport(ApplicationId).

Specified by:

getApplications in class YarnClient

Returns:

a list of reports of applications

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getApplications

public List<org.apache.hadoop.yarn.api.records.ApplicationReport> getApplications(Set<String> applicationTypes,
                                                                                  EnumSet<org.apache.hadoop.yarn.api.records.YarnApplicationState> applicationStates)
                                                                           throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                  IOException

Description copied from class: YarnClient

Get a report (ApplicationReport) of Applications matching the given application types and application states in the cluster.

If the user does not have VIEW_APP access for an application then the corresponding report will be filtered as described in YarnClient.getApplicationReport(ApplicationId).

Specified by:

getApplications in class YarnClient

Returns:

a list of reports of applications

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getYarnClusterMetrics

public org.apache.hadoop.yarn.api.records.YarnClusterMetrics getYarnClusterMetrics()
                                                                            throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                   IOException

Description copied from class: YarnClient

Get metrics (YarnClusterMetrics) about the cluster.

Specified by:

getYarnClusterMetrics in class YarnClient

Returns:

cluster metrics

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getNodeReports

public List<org.apache.hadoop.yarn.api.records.NodeReport> getNodeReports(org.apache.hadoop.yarn.api.records.NodeState... states)
                                                                   throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                          IOException

Description copied from class: YarnClient

Get a report of nodes (NodeReport) in the cluster.

Specified by:

getNodeReports in class YarnClient

Parameters:

states - The NodeStates to filter on. If no filter states are given, nodes in all states will be returned.

Returns:

A list of node reports

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getRMDelegationToken

public org.apache.hadoop.yarn.api.records.Token getRMDelegationToken(org.apache.hadoop.io.Text renewer)
                                                              throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                     IOException

Description copied from class: YarnClient

Get a delegation token so as to be able to talk to YARN using those tokens.

Specified by:

getRMDelegationToken in class YarnClient

Parameters:

renewer - Address of the renewer who can renew these tokens when needed by securely talking to YARN.

Returns:

a delegation token (Token) that can be used to talk to YARN

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getQueueInfo

public org.apache.hadoop.yarn.api.records.QueueInfo getQueueInfo(String queueName)
                                                          throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                 IOException

Description copied from class: YarnClient

Get information (QueueInfo) about a given queue.

Specified by:

getQueueInfo in class YarnClient

Parameters:

queueName - Name of the queue whose information is needed

Returns:

queue information

Throws:

org.apache.hadoop.yarn.exceptions.YarnException - in case of errors or if YARN rejects the request due to access-control restrictions.

IOException

getQueueAclsInfo

public List<org.apache.hadoop.yarn.api.records.QueueUserACLInfo> getQueueAclsInfo()
                                                                           throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                                  IOException

Description copied from class: YarnClient

Get information about acls for current user on all the existing queues.

Specified by:

getQueueAclsInfo in class YarnClient

Returns:

a list of queue acls (QueueUserACLInfo) for current user

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getAllQueues

public List<org.apache.hadoop.yarn.api.records.QueueInfo> getAllQueues()
                                                                throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                       IOException

Description copied from class: YarnClient

Get information (QueueInfo) about all queues, recursively if there is a hierarchy

Specified by:

getAllQueues in class YarnClient

Returns:

a list of queue-information for all queues

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getRootQueueInfos

public List<org.apache.hadoop.yarn.api.records.QueueInfo> getRootQueueInfos()
                                                                     throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                            IOException

Description copied from class: YarnClient

Get information (QueueInfo) about top level queues.

Specified by:

getRootQueueInfos in class YarnClient

Returns:

a list of queue-information for all the top-level queues

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

getChildQueueInfos

public List<org.apache.hadoop.yarn.api.records.QueueInfo> getChildQueueInfos(String parent)
                                                                      throws org.apache.hadoop.yarn.exceptions.YarnException,
                                                                             IOException

Description copied from class: YarnClient

Get information (QueueInfo) about all the immediate children queues of the given queue

Specified by:

getChildQueueInfos in class YarnClient

Parameters:

parent - Name of the queue whose child-queues' information is needed

Returns:

a list of queue-information for all queues who are direct children of the given parent queue.

Throws:

org.apache.hadoop.yarn.exceptions.YarnException

IOException

setRMClient

@InterfaceAudience.Private
public void setRMClient(org.apache.hadoop.yarn.api.ApplicationClientProtocol rmClient)