org.gridgain.grid.kernal.processors.hadoop.taskexecutor.external

Class GridHadoopExternalTaskExecutor

java.lang.Object

org.gridgain.grid.kernal.processors.hadoop.GridHadoopComponent

org.gridgain.grid.kernal.processors.hadoop.taskexecutor.GridHadoopTaskExecutorAdapter

org.gridgain.grid.kernal.processors.hadoop.taskexecutor.external.GridHadoopExternalTaskExecutor

public class GridHadoopExternalTaskExecutor
extends GridHadoopTaskExecutorAdapter

External process registry. Handles external process lifecycle.

Constructor Summary

Constructors

Constructor and Description
GridHadoopExternalTaskExecutor()

Method Summary

Methods

Modifier and Type	Method and Description
void	cancelTasks(org.gridgain.grid.hadoop.GridHadoopJobId jobId) Cancels all currently running tasks for given job ID and cancels scheduled execution of tasks for this job ID.
void	onJobStateChanged(GridHadoopJobMetadata meta) On job state change callback;
void	run(org.gridgain.grid.hadoop.GridHadoopJob job, Collection<org.gridgain.grid.hadoop.GridHadoopTaskInfo> tasks) Runs tasks.
void	start(GridHadoopContext ctx)
void	stop(boolean cancel) Stops manager.

Methods inherited from class org.gridgain.grid.kernal.processors.hadoop.GridHadoopComponent

onKernalStart, onKernalStop

Methods inherited from class java.lang.Object

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

Constructor Detail

GridHadoopExternalTaskExecutor

public GridHadoopExternalTaskExecutor()

Method Detail

start

public void start(GridHadoopContext ctx)
           throws org.gridgain.grid.GridException

Overrides:

start in class GridHadoopComponent

Parameters:

ctx - Hadoop context.

Throws:

org.gridgain.grid.GridException

stop

public void stop(boolean cancel)

Stops manager.

Overrides:

stop in class GridHadoopComponent

onJobStateChanged

public void onJobStateChanged(GridHadoopJobMetadata meta)

On job state change callback;

Specified by:

onJobStateChanged in class GridHadoopTaskExecutorAdapter

Parameters:

meta - Job metadata.

run

public void run(org.gridgain.grid.hadoop.GridHadoopJob job,
       Collection<org.gridgain.grid.hadoop.GridHadoopTaskInfo> tasks)
         throws org.gridgain.grid.GridException

Runs tasks.

Specified by:

run in class GridHadoopTaskExecutorAdapter

Parameters:

job - Job.

tasks - Tasks.

Throws:

org.gridgain.grid.GridException - If failed.

cancelTasks

public void cancelTasks(org.gridgain.grid.hadoop.GridHadoopJobId jobId)

Cancels all currently running tasks for given job ID and cancels scheduled execution of tasks for this job ID.

It is guaranteed that this method will not be called concurrently with GridHadoopTaskExecutorAdapter.run(GridHadoopJob, Collection) method. No more job submissions will be performed via GridHadoopTaskExecutorAdapter.run(GridHadoopJob, Collection) method for given job ID after this method is called.

Specified by:

cancelTasks in class GridHadoopTaskExecutorAdapter

Parameters:

jobId - Job ID to cancel.