Package org.apache.hadoop.yarn.server.nodemanager.security

Class MapRTicketLocalizer

java.lang.Object

org.apache.hadoop.yarn.server.nodemanager.security.MapRTicketLocalizer

All Implemented Interfaces:

ExternalTokenLocalizer

public class MapRTicketLocalizer
extends java.lang.Object
implements ExternalTokenLocalizer

Localizer for MapR ticket. It expects the ticket to be already present in MapRFS. If not, it will result in YarnRuntimeException.

Note: Only a single instance of this class should be maintained per NodeManager process since some global state information is maintained here.

Constructor Summary

Constructors

Constructor	Description
MapRTicketLocalizer()

Method Summary

Modifier and Type	Method	Description
void	cleanup(org.apache.hadoop.yarn.api.records.ApplicationId appId)	Cleans up any resources tracked for the given application.
java.lang.String	getTokenEnvVar()	Returns the environment variable name that needs to be set to point to the external token path.
org.apache.hadoop.fs.Path	getTokenPath(java.lang.String appIdStr, org.apache.hadoop.conf.Configuration conf)	Returns the path of the localized token for given application id.
void	run(org.apache.hadoop.yarn.api.records.ContainerId containerId, java.lang.String username, org.apache.hadoop.conf.Configuration conf)	Localizes any distribution specific tokens.

Methods inherited from class java.lang.Object

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

Constructor Detail

MapRTicketLocalizer

public MapRTicketLocalizer()

Method Detail

run

public void run(org.apache.hadoop.yarn.api.records.ContainerId containerId,
                java.lang.String username,
                org.apache.hadoop.conf.Configuration conf)

Description copied from interface: ExternalTokenLocalizer

Localizes any distribution specific tokens. This method will be invoked with the privileges of the user account used to run NodeManager service.

Specified by:

run in interface ExternalTokenLocalizer

Parameters:

containerId - container id

username - user

conf - YarnConfiguration instance

getTokenPath

public org.apache.hadoop.fs.Path getTokenPath(java.lang.String appIdStr,
                                              org.apache.hadoop.conf.Configuration conf)
                                       throws java.io.IOException

Description copied from interface: ExternalTokenLocalizer

Returns the path of the localized token for given application id.

Specified by:

getTokenPath in interface ExternalTokenLocalizer

Parameters:

appIdStr - application id

conf - YarnConfiguration instance

Throws:

java.io.IOException

getTokenEnvVar

public java.lang.String getTokenEnvVar()

Description copied from interface: ExternalTokenLocalizer

Returns the environment variable name that needs to be set to point to the external token path. This environment variable will be available to both the localization process and the actual container process running the task.

Specified by:

getTokenEnvVar in interface ExternalTokenLocalizer

cleanup

public void cleanup(org.apache.hadoop.yarn.api.records.ApplicationId appId)

Description copied from interface: ExternalTokenLocalizer

Cleans up any resources tracked for the given application.

Specified by:

cleanup in interface ExternalTokenLocalizer

Parameters:

appId - application id