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

Packages that use org.apache.hadoop.mapred.join
org.apache.hadoop.mapred.join Given a set of sorted datasets keyed with the same class and yielding equal partitions, it is possible to effect a join of those datasets prior to the map. 
 

Classes in org.apache.hadoop.mapred.join used by org.apache.hadoop.mapred.join
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 Writables.
 



Copyright © 2009 The Apache Software Foundation