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| <th class="colFirst" scope="col">Interface</th> |
| <th class="colLast" scope="col">Description</th> |
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| <tbody> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/ComposableInputFormat.html" title="interface in org.apache.hadoop.mapred.join">ComposableInputFormat</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>,V extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">Refinement of InputFormat requiring implementors to provide |
| ComposableRecordReader instead of RecordReader.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join">ComposableRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>,V extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">Additional operations required of a RecordReader to participate in a join.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/ResetableIterator.html" title="interface in org.apache.hadoop.mapred.join">ResetableIterator</a><T extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">This defines an interface to a stateful Iterator that can replay elements |
| added to it directly.</div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </li> |
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| <th class="colFirst" scope="col">Class</th> |
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| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/ArrayListBackedIterator.html" title="class in org.apache.hadoop.mapred.join">ArrayListBackedIterator</a><X extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">This class provides an implementation of ResetableIterator.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/CompositeInputFormat.html" title="class in org.apache.hadoop.mapred.join">CompositeInputFormat</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>></td> |
| <td class="colLast"> |
| <div class="block">An InputFormat capable of performing joins over a set of data sources sorted |
| and partitioned the same way.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/CompositeInputSplit.html" title="class in org.apache.hadoop.mapred.join">CompositeInputSplit</a></td> |
| <td class="colLast"> |
| <div class="block">This InputSplit contains a set of child InputSplits.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/CompositeRecordReader.html" title="class in org.apache.hadoop.mapred.join">CompositeRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>,V extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>,X extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">A RecordReader that can effect joins of RecordReaders sharing a common key |
| type and partitioning.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/InnerJoinRecordReader.html" title="class in org.apache.hadoop.mapred.join">InnerJoinRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>></td> |
| <td class="colLast"> |
| <div class="block">Full inner join.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html" title="class in org.apache.hadoop.mapred.join">JoinRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>></td> |
| <td class="colLast"> |
| <div class="block">Base class for Composite joins returning Tuples of arbitrary Writables.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html" title="class in org.apache.hadoop.mapred.join">MultiFilterRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>,V extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">Base class for Composite join returning values derived from multiple |
| sources, but generally not tuples.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/OuterJoinRecordReader.html" title="class in org.apache.hadoop.mapred.join">OuterJoinRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>></td> |
| <td class="colLast"> |
| <div class="block">Full outer join.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/OverrideRecordReader.html" title="class in org.apache.hadoop.mapred.join">OverrideRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>,V extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">Prefer the "rightmost" data source for this key.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/Parser.html" title="class in org.apache.hadoop.mapred.join">Parser</a></td> |
| <td class="colLast"> |
| <div class="block">Very simple shift-reduce parser for join expressions.</div> |
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| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/Parser.Node.html" title="class in org.apache.hadoop.mapred.join">Parser.Node</a></td> |
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| <td class="colLast"> |
| <div class="block">Tagged-union type for tokens from the join expression.</div> |
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| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/StreamBackedIterator.html" title="class in org.apache.hadoop.mapred.join">StreamBackedIterator</a><X extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
| <td class="colLast"> |
| <div class="block">This class provides an implementation of ResetableIterator.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/TupleWritable.html" title="class in org.apache.hadoop.mapred.join">TupleWritable</a></td> |
| <td class="colLast"> |
| <div class="block">Writable type storing multiple <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io"><code>Writable</code></a>s.</div> |
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| <td class="colFirst"><a href="../../../../../org/apache/hadoop/mapred/join/WrappedRecordReader.html" title="class in org.apache.hadoop.mapred.join">WrappedRecordReader</a><K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>,U extends <a href="../../../../../org/apache/hadoop/io/Writable.html" title="interface in org.apache.hadoop.io">Writable</a>></td> |
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| <div class="block">Proxy class for a RecordReader participating in the join framework.</div> |
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