public class KeyFieldBasedComparator<K,V> extends WritableComparator implements JobConfigurable
Constructor and Description |
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KeyFieldBasedComparator() |
Modifier and Type | Method and Description |
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int |
compare(byte[] b1,
int s1,
int l1,
byte[] b2,
int s2,
int l2)
Optimization hook.
|
void |
configure(JobConf job)
Initializes a new instance from a
JobConf . |
compare, compare, compareBytes, define, get, getKeyClass, hashBytes, newKey, readDouble, readFloat, readInt, readLong, readUnsignedShort, readVInt, readVLong
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong
public void configure(JobConf job)
JobConfigurable
JobConf
.configure
in interface JobConfigurable
job
- the configurationpublic int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2)
WritableComparator
The default implementation reads the data into two WritableComparable
s (using Writable.readFields(DataInput)
, then calls WritableComparator.compare(WritableComparable,WritableComparable)
.
compare
in interface RawComparator
compare
in class WritableComparator
Copyright © 2010 The Apache Software Foundation