Package org.apache.hadoop.mapred.jobcontrol

Class Job

java.lang.Object

org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob

org.apache.hadoop.mapred.jobcontrol.Job

@Public
@Stable
public class Job
extends ControlledJob

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob

ControlledJob.State

Field Summary

Fields

Modifier and Type	Field	Description
static final int	DEPENDENT_FAILED
static final int	FAILED
static final int	READY
static final int	RUNNING
static final int	SUCCESS
static final int	WAITING

Fields inherited from class org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob

CREATE_DIR

Constructor Summary

Constructors

Constructor	Description
Job(JobConf conf)
Job(JobConf jobConf, ArrayList<?> dependingJobs)	Construct a job.

Method Summary

Modifier and Type	Method	Description
boolean	addDependingJob(Job dependingJob)	Add a job to this jobs' dependency list.
JobID	getAssignedJobID()
ArrayList<Job>	getDependingJobs()
JobClient	getJobClient()
JobConf	getJobConf()
String	getMapredJobID()
int	getState()
void	setAssignedJobID(JobID mapredJobID)	Deprecated. setAssignedJobID should not be called.
void	setJobConf(JobConf jobConf)	Set the mapred job conf for this job.
void	setMapredJobID(String mapredJobID)	Deprecated.
protected void	setState(int state)	Deprecated.

Methods inherited from class org.apache.hadoop.mapreduce.lib.jobcontrol.ControlledJob

addDependingJob, failJob, getDependentJobs, getJob, getJobID, getJobName, getJobState, getMapredJobId, getMessage, isCompleted, isReady, killJob, setJob, setJobID, setJobName, setJobState, setMessage, submit, toString

Methods inherited from class java.lang.Object

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

Field Details

SUCCESS

public static final int SUCCESS

See Also:

• Constant Field Values

WAITING

public static final int WAITING

See Also:

• Constant Field Values

RUNNING

public static final int RUNNING

See Also:

• Constant Field Values

READY

public static final int READY

See Also:

• Constant Field Values

FAILED

public static final int FAILED

See Also:

• Constant Field Values

DEPENDENT_FAILED

public static final int DEPENDENT_FAILED

See Also:

• Constant Field Values

Constructor Details

Job

public Job(JobConf jobConf,
 ArrayList<?> dependingJobs)
    throws IOException

Construct a job.

Parameters:

jobConf - a mapred job configuration representing a job to be executed.

dependingJobs - an array of jobs the current job depends on

Throws:

IOException

Job

public Job(JobConf conf)
    throws IOException

Throws:

IOException

Method Details

getAssignedJobID

public JobID getAssignedJobID()

Returns:

the mapred ID of this job as assigned by the mapred framework.

setAssignedJobID

@Deprecated
public void setAssignedJobID(JobID mapredJobID)

Deprecated.

setAssignedJobID should not be called. JOBID is set by the framework.

getJobConf

public JobConf getJobConf()

Returns:

the mapred job conf of this job

setJobConf

public void setJobConf(JobConf jobConf)

Set the mapred job conf for this job.

Parameters:

jobConf - the mapred job conf for this job.

getState

public int getState()

Returns:

the state of this job

setState

@Deprecated
protected void setState(int state)

Deprecated.

This is a no-op function, Its a behavior change from 1.x We no more can change the state from job

Parameters:

state - the new state for this job.

addDependingJob

public boolean addDependingJob(Job dependingJob)

Add a job to this jobs' dependency list. Dependent jobs can only be added while a Job is waiting to run, not during or afterwards.

Parameters:

dependingJob - Job that this Job depends on.

Returns:

true if the Job was added.

getJobClient

public JobClient getJobClient()

Returns:

the job client of this job

getDependingJobs

public ArrayList<Job> getDependingJobs()

Returns:

the depending jobs of this job

getMapredJobID

public String getMapredJobID()

Returns:

the mapred ID of this job as assigned by the mapred framework.

setMapredJobID

@Deprecated
public void setMapredJobID(String mapredJobID)

Deprecated.

This is no-op method for backward compatibility. It's a behavior change from 1.x, we can not change job ids from job.

Parameters:

mapredJobID - the mapred job ID for this job.