org.apache.hadoop.mapreduce.lib.join
Class ComposableRecordReader<K extends WritableComparable<?>,V extends Writable>

java.lang.Object
  org.apache.hadoop.mapreduce.RecordReader<K,V>
      org.apache.hadoop.mapreduce.lib.join.ComposableRecordReader<K,V>

All Implemented Interfaces:

Closeable, Comparable<ComposableRecordReader<K,?>>

Direct Known Subclasses:

CompositeRecordReader, WrappedRecordReader

@InterfaceAudience.Public
@InterfaceStability.Stable
public abstract class ComposableRecordReader<K extends WritableComparable<?>,V extends Writable>
extends RecordReader<K,V>
implements Comparable<ComposableRecordReader<K,?>>

Additional operations required of a RecordReader to participate in a join.

Constructor Summary

ComposableRecordReader()

Method Summary

Methods inherited from class org.apache.hadoop.mapreduce.RecordReader

close, getCurrentKey, getCurrentValue, getProgress, initialize, nextKeyValue

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.lang.Comparable

compareTo

Constructor Detail

ComposableRecordReader

public ComposableRecordReader()