org.apache.hadoop.mapred

Class ClusterStatus.BlackListInfo

java.lang.Object

org.apache.hadoop.mapred.ClusterStatus.BlackListInfo

All Implemented Interfaces:

Writable

Enclosing class:

ClusterStatus

public static class ClusterStatus.BlackListInfo
extends Object
implements Writable

Class which encapsulates information about a blacklisted tasktracker. The information includes the tasktracker's name and reasons for getting blacklisted. The toString method of the class will print the information in a whitespace separated fashion to enable parsing.

Method Summary

Methods

Modifier and Type	Method and Description
String	getBlackListReport() Gets a descriptive report about why the tasktracker was blacklisted.
String	getReasonForBlackListing() Gets the reason for which the tasktracker was blacklisted.
String	getTrackerName() Gets the blacklisted tasktracker's name.
void	readFields(DataInput in) Deserialize the fields of this object from in.
String	toString()
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, wait, wait, wait

Method Detail

getTrackerName

public String getTrackerName()

Gets the blacklisted tasktracker's name.

Returns:

tracker's name.

getReasonForBlackListing

public String getReasonForBlackListing()

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

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

toString

public String toString()

Overrides:

toString in class Object