org.apache.hadoop.mapred
Class Counters.Counter

java.lang.Object
  org.apache.hadoop.mapred.Counters.Counter

All Implemented Interfaces:

Writable

Enclosing class:

Counters

public static class Counters.Counter
extends Object
implements Writable

A counter record, comprising its name and value.

Method Summary

long	getCounter() What is the current value of this counter?
String	getDisplayName() Get the name of the counter.
String	getName() Get the internal name of the counter.
void	increment(long incr) Increment this counter by the given value
void	readFields(DataInput in) Read the binary representation of the counter
void	write(DataOutput out) Write the binary representation of the counter

Methods inherited from class java.lang.Object

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

Method Detail

readFields

public void readFields(DataInput in)
                throws IOException

Read the binary representation of the counter

Specified by:

readFields in interface Writable

Parameters:

in - DataInput to deseriablize this object from.

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Write the binary representation of the counter

Specified by:

write in interface Writable

Parameters:

out - DataOuput to serialize this object into.

Throws:

IOException

getName

public String getName()

Get the internal name of the counter.

Returns:

the internal name of the counter

getDisplayName

public String getDisplayName()

Get the name of the counter.

Returns:

the user facing name of the counter

getCounter

public long getCounter()

What is the current value of this counter?

Returns:

the current value

increment

public void increment(long incr)

Increment this counter by the given value

Parameters:

incr - the value to increase this counter by