oracle.spatial.hadoop.vector.join

Class JoinGroupGroupComparator

java.lang.Object

org.apache.hadoop.io.WritableComparator

oracle.spatial.hadoop.vector.join.JoinGroupGroupComparator

All Implemented Interfaces:

java.util.Comparator, org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.RawComparator

public class JoinGroupGroupComparator
extends org.apache.hadoop.io.WritableComparator

A WritableComparator implementation that compare instances of JoinGroupKeyComparator only by their partition ids so records from different data sets but mapped to the same partition can be assigned to the same reduce group.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JoinGroupGroupComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(org.apache.hadoop.io.WritableComparable a, org.apache.hadoop.io.WritableComparable b)

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

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

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

JoinGroupGroupComparator

protected JoinGroupGroupComparator()

Method Detail

compare

public int compare(org.apache.hadoop.io.WritableComparable a,
                   org.apache.hadoop.io.WritableComparable b)

Overrides:

compare in class org.apache.hadoop.io.WritableComparator