org.apache.hadoop.mapreduce

Class QueueInfo

java.lang.Object

org.apache.hadoop.mapreduce.QueueInfo

All Implemented Interfaces:

Writable

Direct Known Subclasses:

JobQueueInfo

@InterfaceAudience.Public
@InterfaceStability.Evolving
public class QueueInfo
extends Object
implements Writable

Class that contains the information regarding the Job Queues which are maintained by the Hadoop Map/Reduce framework.

Constructor Summary

Constructors

Constructor and Description
QueueInfo() Default constructor for QueueInfo.
QueueInfo(String queueName, String schedulingInfo) Construct a new QueueInfo object using the queue name and the scheduling information passed.
QueueInfo(String queueName, String schedulingInfo, QueueState state, JobStatus[] stats)

Method Summary

Methods

Modifier and Type	Method and Description
JobStatus[]	getJobStatuses() Get the jobs submitted to queue
Properties	getProperties() Get properties.
List<QueueInfo>	getQueueChildren() Get immediate children.
String	getQueueName() Get the queue name from JobQueueInfo
String	getSchedulingInfo() Gets the scheduling information associated to particular job queue.
QueueState	getState() Return the queue state
void	readFields(DataInput in) Deserialize the fields of this object from in.
protected void	setJobStatuses(JobStatus[] stats)
protected void	setProperties(Properties props)
protected void	setQueueChildren(List<QueueInfo> children)
protected void	setQueueName(String queueName) Set the queue name of the JobQueueInfo
protected void	setSchedulingInfo(String schedulingInfo) Set the scheduling information associated to particular job queue
protected void	setState(QueueState state) Set the state of the queue
void	write(DataOutput out) Serialize the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

QueueInfo

public QueueInfo()

Default constructor for QueueInfo.

QueueInfo

public QueueInfo(String queueName,
         String schedulingInfo)

Construct a new QueueInfo object using the queue name and the scheduling information passed.

Parameters:

queueName - Name of the job queue

schedulingInfo - Scheduling Information associated with the job queue

QueueInfo

public QueueInfo(String queueName,
         String schedulingInfo,
         QueueState state,
         JobStatus[] stats)

Parameters:

queueName -

schedulingInfo -

state -

stats -

Method Detail

setQueueName

protected void setQueueName(String queueName)

Set the queue name of the JobQueueInfo

Parameters:

queueName - Name of the job queue.

getQueueName

public String getQueueName()

Get the queue name from JobQueueInfo

Returns:

queue name

setSchedulingInfo

protected void setSchedulingInfo(String schedulingInfo)

Set the scheduling information associated to particular job queue

Parameters:

schedulingInfo -

getSchedulingInfo

public String getSchedulingInfo()

Gets the scheduling information associated to particular job queue. If nothing is set would return "N/A"

Returns:

Scheduling information associated to particular Job Queue

setState

protected void setState(QueueState state)

Set the state of the queue

Parameters:

state - state of the queue.

getState

public QueueState getState()

Return the queue state

Returns:

the queue state.

setJobStatuses

protected void setJobStatuses(JobStatus[] stats)

getQueueChildren

public List<QueueInfo> getQueueChildren()

Get immediate children.

Returns:

list of QueueInfo

setQueueChildren

protected void setQueueChildren(List<QueueInfo> children)

getProperties

public Properties getProperties()

Get properties.

Returns:

Properties

setProperties

protected void setProperties(Properties props)

getJobStatuses

public JobStatus[] getJobStatuses()

Get the jobs submitted to queue

Returns:

list of JobStatus for the submitted jobs

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Deserialize the fields of this object from in.

For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Parameters:

in - DataInput to deseriablize this object from.

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Serialize the fields of this object to out.

Specified by:

write in interface Writable

Parameters:

out - DataOuput to serialize this object into.

Throws:

IOException