org.apache.hadoop.io

Class LongWritable.Comparator

java.lang.Object

org.apache.hadoop.io.WritableComparator

org.apache.hadoop.io.LongWritable.Comparator

All Implemented Interfaces:

Comparator

Direct Known Subclasses:

LongWritable.DecreasingComparator

Enclosing class:

LongWritable

public static class LongWritable.Comparator
extends WritableComparator

A Comparator optimized for LongWritable.

Constructor Summary

Constructors

Constructor and Description
Comparator()

Method Summary

Modifier and Type	Method and Description
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) Optimization hook.

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

compare, compare, compareBytes, define, get, getKeyClass, 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

comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Constructor Detail

Comparator

public Comparator()

Method Detail

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).

Overrides:

compare in class WritableComparator