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

Packages that use WritableComparator

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	A system for scalable, fault-tolerant, distributed computation over large data collections.
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.
org.apache.hadoop.tools

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	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	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 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.

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

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

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, Progressable progress)
Create the named map using the named key comparator.

SequenceFile.Sorter(FileSystem fs, WritableComparator comparator, Class valClass, Configuration conf)
Sort and merge using an arbitrary WritableComparator.

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)
Deprecated. Create a set naming the element comparator and compression type.

Uses of WritableComparator in org.apache.hadoop.mapred

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

WritableComparator	JobConf.getOutputKeyComparator()
WritableComparator	JobConf.getOutputValueGroupingComparator() Get the user defined comparator for grouping values.

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

void	JobConf.setOutputKeyComparatorClass(Class<? extends WritableComparator> theClass)

Uses of WritableComparator in org.apache.hadoop.record

Subclasses of WritableComparator in org.apache.hadoop.record

class

RecordComparator A raw record comparator base class

Uses of WritableComparator in org.apache.hadoop.tools

Subclasses of WritableComparator in org.apache.hadoop.tools

static class

Logalyzer.LogComparator A WritableComparator optimized for UTF8 keys of the logs.