org.apache.hadoop.mapred
Class TaskReport

java.lang.Object
  org.apache.hadoop.mapred.TaskReport

All Implemented Interfaces:

Writable

public class TaskReport
extends Object
implements Writable

A report on the state of a task.

Constructor Summary

TaskReport()

Method Summary

Counters	getCounters() A table of counters.
String[]	getDiagnostics() A list of error messages.
long	getFinishTime() Get finish time of task.
float	getProgress() The amount completed, between zero and one.
long	getStartTime() Get start time of task.
String	getState() The most recent state, reported by a Reporter.
String	getTaskId() Deprecated. use getTaskID() instead
TaskID	getTaskID() The id of the task.
void	readFields(DataInput in) Deserialize the fields of this object from in.
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

TaskReport

public TaskReport()

Method Detail

getTaskId

@Deprecated
public String getTaskId()

Deprecated. use getTaskID() instead

getTaskID

public TaskID getTaskID()

The id of the task.

getProgress

public float getProgress()

The amount completed, between zero and one.

getState

public String getState()

The most recent state, reported by a Reporter.

getDiagnostics

public String[] getDiagnostics()

A list of error messages.

getCounters

public Counters getCounters()

A table of counters.

getFinishTime

public long getFinishTime()

Get finish time of task.

Returns:

0, if finish time was not set else returns finish time.

getStartTime

public long getStartTime()

Get start time of task.

Returns:

0 if start time was not set, else start time.

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

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