org.apache.hadoop.mapred.join (Apache Hadoop Main 3.5.0 API)
Description: declaration: package: org.apache.hadoop.mapred.join

# Package org.apache.hadoop.mapred.join

package org.apache.hadoop.mapred.join

- Related Packages
  Package
  Description
  org.apache.hadoop.mapred
- Class
  Description
  ArrayListBackedIterator<X extends Writable>
  This class provides an implementation of ResetableIterator.
  ComposableInputFormat<K extends WritableComparable,V extends Writable>
  Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.
  ComposableRecordReader<K extends WritableComparable,V extends Writable>
  Additional operations required of a RecordReader to participate in a join.
  CompositeInputFormat<K extends WritableComparable>
  An InputFormat capable of performing joins over a set of data sources sorted and partitioned the same way.
  CompositeInputSplit
  This InputSplit contains a set of child InputSplits.
  CompositeRecordReader<K extends WritableComparable,V extends Writable,X extends Writable>
  A RecordReader that can effect joins of RecordReaders sharing a common key type and partitioning.
  InnerJoinRecordReader<K extends WritableComparable>
  Full inner join.
  JoinRecordReader<K extends WritableComparable>
  Base class for Composite joins returning Tuples of arbitrary Writables.
  MultiFilterRecordReader<K extends WritableComparable,V extends Writable>
  Base class for Composite join returning values derived from multiple sources, but generally not tuples.
  OuterJoinRecordReader<K extends WritableComparable>
  Full outer join.
  OverrideRecordReader<K extends WritableComparable,V extends Writable>
  Prefer the "rightmost" data source for this key.
  Parser
  Very simple shift-reduce parser for join expressions.
  Parser.Node
  Parser.NodeToken
  Parser.NumToken
  Parser.StrToken
  Parser.Token
  Tagged-union type for tokens from the join expression.
  Parser.TType
  ResetableIterator<T extends Writable>
  This defines an interface to a stateful Iterator that can replay elements added to it directly.
  org.apache.hadoop.mapred.join.ResetableIterator.EMPTY<U extends Writable>
  StreamBackedIterator<X extends Writable>
  This class provides an implementation of ResetableIterator.
  TupleWritable
  Writable type storing multiple `Writable`s.
  WrappedRecordReader<K extends WritableComparable,U extends Writable>
  Proxy class for a RecordReader participating in the join framework.