Uses of Class
org.apache.hadoop.io.WritableComparator

Packages that use WritableComparator

org.apache.hadoop.examples	Hadoop example code.
org.apache.hadoop.io	Generic i/o code for use when reading and writing data to the network, to databases, and to files.
org.apache.hadoop.mapred.join	Given a set of sorted datasets keyed with the same class and yielding equal partitions, it is possible to effect a join of those datasets prior to the map.
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.
org.apache.hadoop.record	Hadoop record I/O contains classes and a record description language translator for simplifying serialization and deserialization of records in a language-neutral manner.

Uses of WritableComparator in org.apache.hadoop.examples

Subclasses of WritableComparator in org.apache.hadoop.examples

static class

SecondarySort.IntPair.Comparator A Comparator that compares serialized IntPair.

Uses of WritableComparator in org.apache.hadoop.io

Subclasses of WritableComparator in org.apache.hadoop.io

static class	BooleanWritable.Comparator A Comparator optimized for BooleanWritable.
static class	BytesWritable.Comparator A Comparator optimized for BytesWritable.
static class	ByteWritable.Comparator A Comparator optimized for ByteWritable.
static class	DoubleWritable.Comparator A Comparator optimized for DoubleWritable.
static class	FloatWritable.Comparator A Comparator optimized for FloatWritable.
static class	IntWritable.Comparator A Comparator optimized for IntWritable.
static class	LongWritable.Comparator A Comparator optimized for LongWritable.
static class	LongWritable.DecreasingComparator A decreasing Comparator optimized for LongWritable.
static class	MD5Hash.Comparator A WritableComparator optimized for MD5Hash keys.
static class	NullWritable.Comparator A Comparator "optimized" for NullWritable.
static class	Text.Comparator A WritableComparator optimized for Text keys.
static class	UTF8.Comparator Deprecated. A WritableComparator optimized for UTF8 keys.

Methods in org.apache.hadoop.io that return WritableComparator

static WritableComparator

WritableComparator.get(Class<? extends WritableComparable> c) Get a comparator for a WritableComparable implementation.

Methods in org.apache.hadoop.io with parameters of type WritableComparator

static void	WritableComparator.define(Class c, WritableComparator comparator) Register an optimized comparator for a WritableComparable implementation.
protected void	MapFile.Reader.open(FileSystem fs, String dirName, WritableComparator comparator, Configuration conf)

Constructors in org.apache.hadoop.io with parameters of type WritableComparator

BloomMapFile.Reader(FileSystem fs, String dirName, WritableComparator comparator, Configuration conf)

BloomMapFile.Reader(FileSystem fs, String dirName, WritableComparator comparator, Configuration conf, boolean open)

BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass)

BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass, SequenceFile.CompressionType compress)

BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass, SequenceFile.CompressionType compress, CompressionCodec codec, Progressable progress)

BloomMapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass, SequenceFile.CompressionType compress, Progressable progress)

MapFile.Reader(FileSystem fs, String dirName, WritableComparator comparator, Configuration conf)
Construct a map reader for the named map using the named comparator.

MapFile.Reader(FileSystem fs, String dirName, WritableComparator comparator, Configuration conf, boolean open)
Hook to allow subclasses to defer opening streams until further initialization is complete.

MapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass)
Create the named map using the named key comparator.

MapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass, SequenceFile.CompressionType compress)
Create the named map using the named key comparator.

MapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass, SequenceFile.CompressionType compress, CompressionCodec codec, Progressable progress)
Create the named map using the named key comparator.

MapFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, Class valClass, SequenceFile.CompressionType compress, Progressable progress)
Create the named map using the named key comparator.

SetFile.Reader(FileSystem fs, String dirName, WritableComparator comparator, Configuration conf)
Construct a set reader for the named set using the named comparator.

SetFile.Writer(Configuration conf, FileSystem fs, String dirName, WritableComparator comparator, SequenceFile.CompressionType compress)
Create a set naming the element comparator and compression type.

Uses of WritableComparator in org.apache.hadoop.mapred.join

Fields in org.apache.hadoop.mapred.join with type parameters of type WritableComparator

protected Class<? extends WritableComparator>

Parser.Node.cmpcl

Methods in org.apache.hadoop.mapred.join that return WritableComparator

protected WritableComparator

CompositeRecordReader.getComparator() Return comparator defining the ordering for RecordReaders in this composite.

Method parameters in org.apache.hadoop.mapred.join with type arguments of type WritableComparator

protected void

Parser.Node.setKeyComparator(Class<? extends WritableComparator> cmpcl)

Constructor parameters in org.apache.hadoop.mapred.join with type arguments of type WritableComparator

CompositeRecordReader(int id, int capacity, Class<? extends WritableComparator> cmpcl)
Create a RecordReader with capacity children to position id in the parent reader.

JoinRecordReader(int id, JobConf conf, int capacity, Class<? extends WritableComparator> cmpcl)

MultiFilterRecordReader(int id, JobConf conf, int capacity, Class<? extends WritableComparator> cmpcl)

Uses of WritableComparator in org.apache.hadoop.mapred.lib

Subclasses of WritableComparator in org.apache.hadoop.mapred.lib

class

KeyFieldBasedComparator<K,V> This comparator implementation provides a subset of the features provided by the Unix/GNU Sort.

Uses of WritableComparator in org.apache.hadoop.record

Subclasses of WritableComparator in org.apache.hadoop.record

class

RecordComparator A raw record comparator base class