Uses of Interface
org.apache.hadoop.io.RawComparator

Packages that use RawComparator

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.io.serializer	This package provides a mechanism for using different serialization frameworks in Hadoop.
org.apache.hadoop.mapred	A software framework for easily writing applications which process vast amounts of data (multi-terabyte data-sets) parallelly on large clusters (thousands of nodes) built of commodity hardware in a reliable, fault-tolerant manner.
org.apache.hadoop.mapred.lib	Library of generally useful mappers, reducers, and partitioners.
org.apache.hadoop.mapreduce
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 RawComparator in org.apache.hadoop.examples

Classes in org.apache.hadoop.examples that implement RawComparator

static class	SecondarySort.FirstGroupingComparator Compare only the first part of the pair, so that reduce is called once for each value of the first part.
static class	SecondarySort.IntPair.Comparator A Comparator that compares serialized IntPair.

Uses of RawComparator in org.apache.hadoop.io

Classes in org.apache.hadoop.io that implement RawComparator

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.
class	WritableComparator A Comparator for WritableComparables.

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

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

Uses of RawComparator in org.apache.hadoop.io.serializer

Classes in org.apache.hadoop.io.serializer that implement RawComparator

class	DeserializerComparator<T> A RawComparator that uses a Deserializer to deserialize the objects to be compared so that the standard Comparator can be used to compare them.
class	JavaSerializationComparator<T extends Serializable & Comparable<T>> A RawComparator that uses a JavaSerialization Deserializer to deserialize objects that are then compared via their Comparable interfaces.

Uses of RawComparator in org.apache.hadoop.mapred

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

RawComparator	JobConf.getOutputKeyComparator() Get the RawComparator comparator used to compare keys.
RawComparator	JobConf.getOutputValueGroupingComparator() Get the user defined WritableComparable comparator for grouping keys of inputs to the reduce.

Methods in org.apache.hadoop.mapred with parameters of type RawComparator

protected static <INKEY,INVALUE,OUTKEY,OUTVALUE> Reducer.Context

Task.createReduceContext(Reducer<INKEY,INVALUE,OUTKEY,OUTVALUE> reducer, Configuration job, TaskAttemptID taskId, RawKeyValueIterator rIter, Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<OUTKEY,OUTVALUE> output, OutputCommitter committer, StatusReporter reporter, RawComparator<INKEY> comparator, Class<INKEY> keyClass, Class<INVALUE> valueClass)

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

void	JobConf.setOutputKeyComparatorClass(Class<? extends RawComparator> theClass) Set the RawComparator comparator used to compare keys.
void	JobConf.setOutputValueGroupingComparator(Class<? extends RawComparator> theClass) Set the user defined RawComparator comparator for grouping keys in the input to the reduce.

Constructors in org.apache.hadoop.mapred with parameters of type RawComparator

Task.CombineValuesIterator(RawKeyValueIterator in, RawComparator<KEY> comparator, Class<KEY> keyClass, Class<VALUE> valClass, Configuration conf, Reporter reporter, Counters.Counter combineInputCounter)

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

Classes in org.apache.hadoop.mapred.lib that implement RawComparator

class

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

Uses of RawComparator in org.apache.hadoop.mapreduce

Methods in org.apache.hadoop.mapreduce that return RawComparator

RawComparator<?>	JobContext.getGroupingComparator() Get the user defined RawComparator comparator for grouping keys of inputs to the reduce.
RawComparator<?>	JobContext.getSortComparator() Get the RawComparator comparator used to compare keys.

Method parameters in org.apache.hadoop.mapreduce with type arguments of type RawComparator

void	Job.setGroupingComparatorClass(Class<? extends RawComparator> cls) Define the comparator that controls which keys are grouped together for a single call to Reducer.reduce(Object, Iterable, org.apache.hadoop.mapreduce.Reducer.Context)
void	Job.setSortComparatorClass(Class<? extends RawComparator> cls) Define the comparator that controls how the keys are sorted before they are passed to the Reducer.

Constructors in org.apache.hadoop.mapreduce with parameters of type RawComparator

ReduceContext(Configuration conf, TaskAttemptID taskid, RawKeyValueIterator input, Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<KEYOUT,VALUEOUT> output, OutputCommitter committer, StatusReporter reporter, RawComparator<KEYIN> comparator, Class<KEYIN> keyClass, Class<VALUEIN> valueClass)

Reducer.Context(Configuration conf, TaskAttemptID taskid, RawKeyValueIterator input, Counter inputKeyCounter, Counter inputValueCounter, RecordWriter<KEYOUT,VALUEOUT> output, OutputCommitter committer, StatusReporter reporter, RawComparator<KEYIN> comparator, Class<KEYIN> keyClass, Class<VALUEIN> valueClass)

Uses of RawComparator in org.apache.hadoop.record

Classes in org.apache.hadoop.record that implement RawComparator

class

RecordComparator A raw record comparator base class