Uses of Interface

Packages that use Closeable

Uses of Closeable in org.apache.hadoop.mapred

Subinterfaces of Closeable in org.apache.hadoop.mapred
 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.

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

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

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

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

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