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

Packages that use Closeable

Package	Description
org.apache.hadoop.mapred
org.apache.hadoop.mapred.lib
org.apache.hadoop.mapred.lib.aggregate

Uses of Closeable in org.apache.hadoop.mapred

Subinterfaces of Closeable in org.apache.hadoop.mapred

Modifier and Type	Interface	Description
interface	Mapper<K1,V1,K2,V2>	Maps input key/value pairs to a set of intermediate key/value pairs.
interface	Reducer<K2,V2,K3,V3>	Reduces a set of intermediate values which share a key to a smaller set of values.

Classes in org.apache.hadoop.mapred that implement Closeable

Modifier and Type	Class	Description
class	MapReduceBase	Base class for Mapper and Reducer implementations.

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

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

Modifier and Type	Class	Description
class	ChainMapper	The ChainMapper class allows to use multiple Mapper classes within a single Map task.
class	ChainReducer	The ChainReducer class allows to chain multiple Mapper classes after a Reducer within the Reducer task.
class	FieldSelectionMapReduce<K,V>	This class implements a mapper/reducer class that can be used to perform field selections in a manner similar to unix cut.
class	IdentityMapper<K,V>	Implements the identity function, mapping inputs directly to outputs.
class	IdentityReducer<K,V>	Performs no reduction, writing all input values directly to the output.
class	InverseMapper<K,V>	A Mapper that swaps keys and values.
class	LongSumReducer<K>	A Reducer that sums long values.
class	RegexMapper<K>	A Mapper that extracts text matching a regular expression.
class	TokenCountMapper<K>	A Mapper that maps text values into <token,freq> pairs.

Uses of Closeable in org.apache.hadoop.mapred.lib.aggregate

Classes in org.apache.hadoop.mapred.lib.aggregate that implement Closeable

Modifier and Type	Class	Description
class	ValueAggregatorCombiner<K1 extends WritableComparable,V1 extends Writable>	This class implements the generic combiner of Aggregate.
class	ValueAggregatorJobBase<K1 extends WritableComparable,V1 extends Writable>	This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate.
class	ValueAggregatorMapper<K1 extends WritableComparable,V1 extends Writable>	This class implements the generic mapper of Aggregate.
class	ValueAggregatorReducer<K1 extends WritableComparable,V1 extends Writable>	This class implements the generic reducer of Aggregate.