org.apache.hadoop.mapred.join
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## Package `org.apache.hadoop.mapred.join`

Changed Classes and Interfaces
ArrayListBackedIterator | This class provides an implementation of ResetableIterator.
ComposableInputFormat | Refinement of InputFormat requiring implementors to provide ComposableRecordReader instead of RecordReader.
ComposableRecordReader | Additional operations required of a RecordReader to participate in a join.
CompositeInputFormat | An InputFormat capable of performing joins over a set of data sources sorted and partitioned the same way.
CompositeRecordReader | A RecordReader that can effect joins of RecordReaders sharing a common key type and partitioning.
InnerJoinRecordReader | Full inner join.
JoinRecordReader | Base class for Composite joins returning Tuples of arbitrary Writables.
JoinRecordReader.JoinDelegationIterator | Since the JoinCollector is effecting our operation we need only provide an iterator proxy wrapping its operation.
MultiFilterRecordReader | Base class for Composite join returning values derived from multiple sources but generally not tuples.
MultiFilterRecordReader. MultiFilterDelegationIterator | Proxy the JoinCollector but include callback to emit.
OuterJoinRecordReader | Full outer join.
OverrideRecordReader | Prefer the "rightmost" data source for this key.
Parser.Node |
Parser.TType |
ResetableIterator | This defines an interface to a stateful Iterator that can replay elements added to it directly.
ResetableIterator.EMPTY |
StreamBackedIterator | This class provides an implementation of ResetableIterator.
TupleWritable | Writable type storing multiple Thi is *not* a general-purpose tuple type.
WrappedRecordReader | Proxy class for a RecordReader participating in the join framework.

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