org.apache.hadoop.mapred.join
Class InnerJoinRecordReader<K extends WritableComparable>
java.lang.Object
org.apache.hadoop.mapred.join.CompositeRecordReader<K,Writable,TupleWritable>
org.apache.hadoop.mapred.join.JoinRecordReader<K>
org.apache.hadoop.mapred.join.InnerJoinRecordReader<K>
- All Implemented Interfaces:
- Comparable<ComposableRecordReader<K,?>>, Configurable, ComposableRecordReader<K,TupleWritable>, RecordReader<K,TupleWritable>
@InterfaceAudience.Public
@InterfaceStability.Stable
public class InnerJoinRecordReader<K extends WritableComparable>
- extends JoinRecordReader<K>
Full inner join.
Method Summary |
protected boolean |
combine(Object[] srcs,
TupleWritable dst)
Return true iff the tuple is full (all data sources contain this key). |
Methods inherited from class org.apache.hadoop.mapred.join.CompositeRecordReader |
accept, add, close, compareTo, createInternalValue, createKey, fillJoinCollector, getComparator, getConf, getPos, getProgress, getRecordReaderQueue, hasNext, id, key, key, setConf, skip |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
combine
protected boolean combine(Object[] srcs,
TupleWritable dst)
- Return true iff the tuple is full (all data sources contain this key).
- Specified by:
combine
in class CompositeRecordReader<K extends WritableComparable,Writable,TupleWritable>
Copyright © 2014 Apache Software Foundation. All Rights Reserved.