# Uses of Package
org.apache.hadoop.mapred.join

- Packages that use org.apache.hadoop.mapred.join
  Package | Description
  --- | ---
  org.apache.hadoop.mapred.join |

- Classes in org.apache.hadoop.mapred.join used by org.apache.hadoop.mapred.join
  Class and Description
  ComposableInputFormat Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.
  ComposableRecordReader Additional operations required of a RecordReader to participate in a join.
  CompositeRecordReader A RecordReader that can effect joins of RecordReaders sharing a common key type and partitioning.
  JoinRecordReader Base class for Composite joins returning Tuples of arbitrary Writables.
  MultiFilterRecordReader Base class for Composite join returning values derived from multiple sources, but generally not tuples.
  Parser.Node
  Parser.Token Tagged-union type for tokens from the join expression.
  Parser.TType
  ResetableIterator This defines an interface to a stateful Iterator that can replay elements added to it directly.
  TupleWritable Writable type storing multiple `Writable`s.

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