com.hazelcast.mapreduce.impl

Class AbstractJobTracker

java.lang.Object

com.hazelcast.mapreduce.impl.AbstractJobTracker

All Implemented Interfaces:

DistributedObject, JobTracker

public abstract class AbstractJobTracker
extends Object
implements JobTracker

This is the base class for all JobTracker implementations on node and client side.
It combines a lot of the base functionality to handle remote operations.

Field Summary

Fields

Modifier and Type	Field and Description
protected ExecutorService	executorService
protected JobTrackerConfig	jobTrackerConfig
protected ConcurrentMap<String,MapCombineTask>	mapCombineTasks
protected MapReduceService	mapReduceService
protected String	name
protected NodeEngine	nodeEngine
protected ConcurrentMap<String,ReducerTask>	reducerTasks
protected ConcurrentMap<String,TrackableJobFuture>	trackableJobs

Method Summary

Modifier and Type	Method and Description
void	destroy() Destroys this object cluster-wide.
JobTrackerConfig	getJobTrackerConfig()
<KeyIn,ValueIn,KeyOut,ValueOut,Chunk> MapCombineTask<KeyIn,ValueIn,KeyOut,ValueOut,Chunk>	getMapCombineTask(String jobId)
String	getName() Returns the unique name for this DistributedObject.
String	getPartitionKey() Returns the key of the partition that this DistributedObject is assigned to.
<Key,Chunk> ReducerTask<Key,Chunk>	getReducerTask(String jobId)
String	getServiceName() Returns the service name for this object.
<V> TrackableJobFuture<V>	getTrackableJob(String jobId) Returns an implementation of TrackableJob, or null if the job ID is not available or the job is already finished.
<KeyIn,ValueIn,KeyOut,ValueOut,Chunk> void	registerMapCombineTask(MapCombineTask<KeyIn,ValueIn,KeyOut,ValueOut,Chunk> mapCombineTask)
<Key,Chunk> void	registerReducerTask(ReducerTask<Key,Chunk> reducerTask)
<V> boolean	registerTrackableJob(TrackableJobFuture<V> trackableJob)
MapCombineTask	unregisterMapCombineTask(String jobId)
ReducerTask	unregisterReducerTask(String jobId)
<V> TrackableJobFuture<V>	unregisterTrackableJob(String jobId)

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.hazelcast.mapreduce.JobTracker

newJob

Field Detail

trackableJobs

protected final ConcurrentMap<String,TrackableJobFuture> trackableJobs

reducerTasks

protected final ConcurrentMap<String,ReducerTask> reducerTasks

mapCombineTasks

protected final ConcurrentMap<String,MapCombineTask> mapCombineTasks

nodeEngine

protected final NodeEngine nodeEngine

executorService

protected final ExecutorService executorService

mapReduceService

protected final MapReduceService mapReduceService

jobTrackerConfig

protected final JobTrackerConfig jobTrackerConfig

name

protected final String name

Method Detail

destroy

public void destroy()

Description copied from interface: DistributedObject

Destroys this object cluster-wide. Clears and releases all resources for this object.

Specified by:

destroy in interface DistributedObject

getPartitionKey

public String getPartitionKey()

Description copied from interface: DistributedObject

Returns the key of the partition that this DistributedObject is assigned to. The returned value only has meaning for a non-partitioned data structure like an IAtomicLong. For a partitioned data structure like an IMap, the returned value will not be null, but otherwise undefined.

Specified by:

getPartitionKey in interface DistributedObject

Returns:

the partition key.

getName

public final String getName()

Description copied from interface: DistributedObject

Returns the unique name for this DistributedObject. The returned value will never be null. The suggested way for getting name is retrieving it through DistributedObjectUtil.getName(DistributedObject) because this might be also a PrefixedDistributedObject.

Specified by:

getName in interface DistributedObject

Returns:

the unique name for this object.

getServiceName

public final String getServiceName()

Description copied from interface: DistributedObject

Returns the service name for this object.

Specified by:

getServiceName in interface DistributedObject

Returns:

the service name for this object.

getJobTrackerConfig

public JobTrackerConfig getJobTrackerConfig()

registerTrackableJob

public <V> boolean registerTrackableJob(TrackableJobFuture<V> trackableJob)

unregisterTrackableJob

public <V> TrackableJobFuture<V> unregisterTrackableJob(String jobId)

getTrackableJob

public <V> TrackableJobFuture<V> getTrackableJob(String jobId)

Description copied from interface: JobTracker

Returns an implementation of TrackableJob, or null if the job ID is not available or the job is already finished.

Specified by:

getTrackableJob in interface JobTracker

Type Parameters:

V - type of the resulting value

Parameters:

jobId - job ID to search the TrackableJob for

Returns:

a trackable job for given job ID or null if the job ID is not available

registerReducerTask

public <Key,Chunk> void registerReducerTask(ReducerTask<Key,Chunk> reducerTask)

unregisterReducerTask

public ReducerTask unregisterReducerTask(String jobId)

getReducerTask

public <Key,Chunk> ReducerTask<Key,Chunk> getReducerTask(String jobId)

registerMapCombineTask

public <KeyIn,ValueIn,KeyOut,ValueOut,Chunk> void registerMapCombineTask(MapCombineTask<KeyIn,ValueIn,KeyOut,ValueOut,Chunk> mapCombineTask)

unregisterMapCombineTask

public MapCombineTask unregisterMapCombineTask(String jobId)

getMapCombineTask

public <KeyIn,ValueIn,KeyOut,ValueOut,Chunk> MapCombineTask<KeyIn,ValueIn,KeyOut,ValueOut,Chunk> getMapCombineTask(String jobId)