org.apache.tez.serviceplugins.api

Interface ContainerLauncherContext

All Superinterfaces:

org.apache.tez.serviceplugins.api.ServicePluginContextBase

@InterfaceAudience.Public
 @InterfaceStability.Unstable
public interface ContainerLauncherContext
extends org.apache.tez.serviceplugins.api.ServicePluginContextBase

Method Summary

Modifier and Type	Method and Description
void	containerCompleted(org.apache.hadoop.yarn.api.records.ContainerId containerId, int exitStatus, String diagnostics, TaskAttemptEndReason endReason) Inform the scheduler that a container was successfully stopped
void	containerLaunched(org.apache.hadoop.yarn.api.records.ContainerId containerId) Inform the framework that a container has been launched
void	containerLaunchFailed(org.apache.hadoop.yarn.api.records.ContainerId containerId, String diagnostics) Inform the framework of an issue while trying to launch a container.
void	containerStopFailed(org.apache.hadoop.yarn.api.records.ContainerId containerId, String diagnostics) Inform the framework that the attempt to stop a container failed
void	containerStopRequested(org.apache.hadoop.yarn.api.records.ContainerId containerId) Inform the framework that a request has been made to stop a container
org.apache.hadoop.yarn.api.records.ApplicationAttemptId	getApplicationAttemptId() Get the application attempt id for the running application.
int	getNumNodes(String sourceName) Get the number of nodes being handled by the specified source
Object	getTaskCommunicatorMetaInfo(String taskCommName) Get meta info from the specified TaskCommunicator.

Methods inherited from interface org.apache.tez.serviceplugins.api.ServicePluginContextBase

getCurrentDagInfo, getInitialUserPayload, reportError

Method Detail

containerLaunched

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

Inform the framework that a container has been launched

Parameters:

containerId - the id of the container that has been launched

containerLaunchFailed

void containerLaunchFailed(org.apache.hadoop.yarn.api.records.ContainerId containerId,
                           String diagnostics)

Inform the framework of an issue while trying to launch a container.

Parameters:

containerId - the id of the container which failed to launch

diagnostics - diagnostics for the failure

containerStopRequested

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

Inform the framework that a request has been made to stop a container

Parameters:

containerId - the id of the associated container

containerStopFailed

void containerStopFailed(org.apache.hadoop.yarn.api.records.ContainerId containerId,
                         String diagnostics)

Inform the framework that the attempt to stop a container failed

Parameters:

containerId - the id of the associated container

diagnostics - diagnostics for the failure

containerCompleted

void containerCompleted(org.apache.hadoop.yarn.api.records.ContainerId containerId,
                        int exitStatus,
                        String diagnostics,
                        TaskAttemptEndReason endReason)

Inform the scheduler that a container was successfully stopped

Parameters:

containerId - the id of the associated container

exitStatus - the exit status of the container

diagnostics - diagnostics associated with the container end

endReason - the end reason for the task running in the container

getNumNodes

int getNumNodes(String sourceName)

Get the number of nodes being handled by the specified source

Parameters:

sourceName - the relevant source name

Returns:

the number of nodes

getApplicationAttemptId

org.apache.hadoop.yarn.api.records.ApplicationAttemptId getApplicationAttemptId()

Get the application attempt id for the running application. Relevant when running under YARN

Returns:

the applicationAttemptId for the running app

getTaskCommunicatorMetaInfo

Object getTaskCommunicatorMetaInfo(String taskCommName)

Get meta info from the specified TaskCommunicator. This assumes that the launcher has been setup along with a compatible TaskCommunicator, and the launcher knows how to read this meta-info

Parameters:

taskCommName - the name of the task communicator

Returns:

meta info for the requested task communicator