Uses of Interface
org.apache.hadoop.io.Closeable
Packages that use Closeable
Package
Description
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Uses of Closeable in org.apache.hadoop.mapred
Subinterfaces of Closeable in org.apache.hadoop.mapredModifier and TypeInterfaceDescriptioninterfaceMapper<K1,V1, K2, V2> Maps input key/value pairs to a set of intermediate key/value pairs.interfaceReducer<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 CloseableModifier and TypeClassDescriptionclass -
Uses of Closeable in org.apache.hadoop.mapred.lib
Classes in org.apache.hadoop.mapred.lib that implement CloseableModifier and TypeClassDescriptionclassThe ChainMapper class allows to use multiple Mapper classes within a single Map task.classThe ChainReducer class allows to chain multiple Mapper classes after a Reducer within the Reducer task.classThis class implements a mapper/reducer class that can be used to perform field selections in a manner similar to unix cut.classIdentityMapper<K,V> Implements the identity function, mapping inputs directly to outputs.classIdentityReducer<K,V> Performs no reduction, writing all input values directly to the output.classInverseMapper<K,V> AMapperthat swaps keys and values.classAReducerthat sums long values.classRegexMapper<K>AMapperthat extracts text matching a regular expression.classAMapperthat 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 CloseableModifier and TypeClassDescriptionclassValueAggregatorCombiner<K1 extends WritableComparable,V1 extends Writable> This class implements the generic combiner of Aggregate.classValueAggregatorJobBase<K1 extends WritableComparable,V1 extends Writable> This abstract class implements some common functionalities of the the generic mapper, reducer and combiner classes of Aggregate.classValueAggregatorMapper<K1 extends WritableComparable,V1 extends Writable> This class implements the generic mapper of Aggregate.classValueAggregatorReducer<K1 extends WritableComparable,V1 extends Writable> This class implements the generic reducer of Aggregate.