org.apache.hadoop.mapreduce

Class TaskTrackerInfo

java.lang.Object

org.apache.hadoop.mapreduce.TaskTrackerInfo

All Implemented Interfaces:

Writable

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

Information about TaskTracker.

Constructor Summary

Constructors

Constructor and Description
TaskTrackerInfo()
TaskTrackerInfo(String name)
TaskTrackerInfo(String name, String reasonForBlacklist, String report)

Method Summary

Modifier and Type	Method and Description
String	getBlacklistReport() Gets a descriptive report about why the tasktracker was blacklisted.
String	getReasonForBlacklist() Gets the reason for which the tasktracker was blacklisted.
String	getTaskTrackerName() Gets the tasktracker's name.
boolean	isBlacklisted() Whether tracker is blacklisted
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

TaskTrackerInfo

public TaskTrackerInfo()

TaskTrackerInfo

public TaskTrackerInfo(String name)

TaskTrackerInfo

public TaskTrackerInfo(String name,
                       String reasonForBlacklist,
                       String report)

Method Detail

getTaskTrackerName

public String getTaskTrackerName()

Gets the tasktracker's name.

Returns:

tracker's name.

isBlacklisted

public boolean isBlacklisted()

Whether tracker is blacklisted

Returns:

true if tracker is blacklisted false otherwise

getReasonForBlacklist

public String getReasonForBlacklist()

Gets the reason for which the tasktracker was blacklisted.

Returns:

reason which tracker was blacklisted

getBlacklistReport

public String getBlacklistReport()

Gets a descriptive report about why the tasktracker was blacklisted.

Returns:

report describing why the tasktracker was blacklisted.

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 - any other problem for readFields.

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 - any other problem for write.