alluxio.job.plan.persist

Class PersistDefinition

java.lang.Object

alluxio.job.plan.AbstractVoidPlanDefinition<PersistConfig,SerializableVoid>

alluxio.job.plan.persist.PersistDefinition

All Implemented Interfaces:

PlanDefinition<PersistConfig,SerializableVoid,SerializableVoid>

@NotThreadSafe
public final class PersistDefinition
extends AbstractVoidPlanDefinition<PersistConfig,SerializableVoid>

A job that persists a file into the under storage.

Constructor Summary

Constructors

Constructor and Description
PersistDefinition() Constructs a new PersistDefinition.

Method Summary

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

Methods inherited from class alluxio.job.plan.AbstractVoidPlanDefinition

join

Methods inherited from class java.lang.Object

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

Constructor Detail

PersistDefinition

public PersistDefinition()

Constructs a new PersistDefinition.

Method Detail

selectExecutors

public java.util.Set<Pair<WorkerInfo,SerializableVoid>> selectExecutors(PersistConfig config,
                                                                        java.util.List<WorkerInfo> jobWorkerInfoList,
                                                                        SelectExecutorsContext context)
                                                                 throws java.lang.Exception

Description copied from interface: PlanDefinition

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 set of pairs of selected workers to the parameters to pass along

Throws:

java.lang.Exception - if any error occurs

runTask

public SerializableVoid runTask(PersistConfig config,
                                SerializableVoid args,
                                RunTaskContext context)
                         throws java.lang.Exception

Description copied from interface: PlanDefinition

Runs the task in the executor.

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:

java.lang.Exception - if any error occurs

getJobConfigClass

public java.lang.Class<PersistConfig> getJobConfigClass()

Returns:

the class of the associated JobConfig