alluxio.job.replicate

Class MoveDefinition

java.lang.Object

alluxio.job.AbstractVoidJobDefinition<MoveConfig,SerializableVoid>

alluxio.job.replicate.MoveDefinition

All Implemented Interfaces:

JobDefinition<MoveConfig,SerializableVoid,SerializableVoid>

@NotThreadSafe
public final class MoveDefinition
extends AbstractVoidJobDefinition<MoveConfig,SerializableVoid>

A job to move a block. This job is invoked by the checker of replication level in FileSystemMaster.

Constructor Summary

Constructors

Constructor and Description
MoveDefinition() Constructs a new MoveDefinition.

Method Summary

Modifier and Type	Method and Description
Class<MoveConfig>	getJobConfigClass()
SerializableVoid	runTask(MoveConfig config, SerializableVoid args, RunTaskContext context) Runs the task in the executor.
Map<WorkerInfo,SerializableVoid>	selectExecutors(MoveConfig config, List<WorkerInfo> jobWorkerInfoList, SelectExecutorsContext context) Selects the workers to run the task.

Methods inherited from class alluxio.job.AbstractVoidJobDefinition

join

Methods inherited from class java.lang.Object

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

Constructor Detail

MoveDefinition

public MoveDefinition()

Constructs a new MoveDefinition.

Method Detail

getJobConfigClass

public Class<MoveConfig> getJobConfigClass()

Returns:

the class of the associated JobConfig

selectExecutors

public Map<WorkerInfo,SerializableVoid> selectExecutors(MoveConfig config,
                                                        List<WorkerInfo> jobWorkerInfoList,
                                                        SelectExecutorsContext context)

Description copied from interface: JobDefinition

Selects the workers to run the task.

Parameters:

config - the job configuration

jobWorkerInfoList - the list of available workers' information

context - the context containing information used to select executors

Returns:

a map of selected workers to the parameters to pass along

runTask

public SerializableVoid runTask(MoveConfig config,
                                SerializableVoid args,
                                RunTaskContext context)
                         throws Exception

Runs the task in the executor. This task will move the given block.

Parameters:

config - the job configuration

args - the arguments passed in

context - the context containing information used to execute a task

Returns:

the task result

Throws:

Exception - if any error occurs