org.apache.hadoop.tools

Class Logalyzer.LogComparator

java.lang.Object

org.apache.hadoop.io.WritableComparator

org.apache.hadoop.io.Text.Comparator

org.apache.hadoop.tools.Logalyzer.LogComparator

All Implemented Interfaces:

Comparator, Configurable, RawComparator

Enclosing class:

Logalyzer

public static class Logalyzer.LogComparator
extends Text.Comparator
implements Configurable

A WritableComparator optimized for UTF8 keys of the logs.

Constructor Summary

Constructors

Constructor and Description
Logalyzer.LogComparator()

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) Optimization hook.
Configuration	getConf() Return the configuration used by this object.
void	setConf(Configuration conf) Set the configuration to be used by this object.

Methods inherited from class org.apache.hadoop.io.WritableComparator

compare, compare, compareBytes, define, get, getKeyClass, hashBytes, hashBytes, newKey, readDouble, readFloat, readInt, readLong, readUnsignedShort, readVInt, readVLong

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

Logalyzer.LogComparator

public Logalyzer.LogComparator()

Method Detail

setConf

public void setConf(Configuration conf)

Description copied from interface: Configurable

Set the configuration to be used by this object.

Specified by:

setConf in interface Configurable

getConf

public Configuration getConf()

Description copied from interface: Configurable

Return the configuration used by this object.

Specified by:

getConf in interface Configurable

compare

public int compare(byte[] b1,
          int s1,
          int l1,
          byte[] b2,
          int s2,
          int l2)

Description copied from class: WritableComparator

Optimization hook. Override this to make SequenceFile.Sorter's scream.

The default implementation reads the data into two WritableComparables (using Writable.readFields(DataInput), then calls WritableComparator.compare(WritableComparable,WritableComparable).

Specified by:

compare in interface RawComparator

Overrides:

compare in class Text.Comparator

Parameters:

b1 - The first byte array.

s1 - The position index in b1. The object under comparison's starting index.

l1 - The length of the object in b1.

b2 - The second byte array.

s2 - The position index in b2. The object under comparison's starting index.

l2 - The length of the object under comparison in b2.

Returns:

An integer result of the comparison.