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<h2 title="Uses of Interface org.apache.hadoop.mapred.RecordReader" class="title">Uses of Interface<br>org.apache.hadoop.mapred.RecordReader</h2>
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<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing packages, and an explanation">
<caption><span>Packages that use <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Package</th>
<th class="colLast" scope="col">Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapred">org.apache.hadoop.mapred</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapred.join">org.apache.hadoop.mapred.join</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapred.lib">org.apache.hadoop.mapred.lib</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapred.lib.db">org.apache.hadoop.mapred.lib.db</a></td>
<td class="colLast">&nbsp;</td>
</tr>
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</table>
</li>
<li class="blockList">
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapred/package-summary.html">org.apache.hadoop.mapred</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../org/apache/hadoop/mapred/package-summary.html">org.apache.hadoop.mapred</a> that implement <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/KeyValueLineRecordReader.html" title="class in org.apache.hadoop.mapred">KeyValueLineRecordReader</a></span></code>
<div class="block">This class treats a line in the input as a key/value pair separated by a
separator character.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/SequenceFileAsTextRecordReader.html" title="class in org.apache.hadoop.mapred">SequenceFileAsTextRecordReader</a></span></code>
<div class="block">This class converts the input keys and values to their String forms by calling toString()
method.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/SequenceFileRecordReader.html" title="class in org.apache.hadoop.mapred">SequenceFileRecordReader</a>&lt;K,V&gt;</span></code>
<div class="block">An <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred"><code>RecordReader</code></a> for <a href="../../../../../org/apache/hadoop/io/SequenceFile.html" title="class in org.apache.hadoop.io"><code>SequenceFile</code></a>s.</div>
</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../org/apache/hadoop/mapred/package-summary.html">org.apache.hadoop.mapred</a> that return <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/FileInputFormat.html" title="type parameter in FileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/FileInputFormat.html" title="type parameter in FileInputFormat">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">FileInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/FileInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>,<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">TextInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/TextInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;genericSplit,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="type parameter in InputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/InputFormat.html" title="type parameter in InputFormat">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">InputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/InputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Get the <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred"><code>RecordReader</code></a> for the given <a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><code>InputSplit</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>,<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">SequenceFileAsTextInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/SequenceFileAsTextInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>,<a href="../../../../../org/apache/hadoop/io/BytesWritable.html" title="class in org.apache.hadoop.io">BytesWritable</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">FixedLengthInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/FixedLengthInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;genericSplit,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/SequenceFileInputFilter.html" title="type parameter in SequenceFileInputFilter">K</a>,<a href="../../../../../org/apache/hadoop/mapred/SequenceFileInputFilter.html" title="type parameter in SequenceFileInputFilter">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">SequenceFileInputFilter.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/SequenceFileInputFilter.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Create a record reader for the given split</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">SequenceFileInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/SequenceFileInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/MultiFileInputFormat.html" title="type parameter in MultiFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/MultiFileInputFormat.html" title="type parameter in MultiFileInputFormat">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">MultiFileInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/MultiFileInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/BytesWritable.html" title="class in org.apache.hadoop.io">BytesWritable</a>,<a href="../../../../../org/apache/hadoop/io/BytesWritable.html" title="class in org.apache.hadoop.io">BytesWritable</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">SequenceFileAsBinaryInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/SequenceFileAsBinaryInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>,<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">KeyValueTextInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/KeyValueTextInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;genericSplit,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../org/apache/hadoop/mapred/package-summary.html">org.apache.hadoop.mapred</a> with parameters of type <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">MapRunnable.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/MapRunnable.html#run-org.apache.hadoop.mapred.RecordReader-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">run</a></span>(<a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">K1</a>,<a href="../../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">V1</a>&gt;&nbsp;input,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">K2</a>,<a href="../../../../../org/apache/hadoop/mapred/MapRunnable.html" title="type parameter in MapRunnable">V2</a>&gt;&nbsp;output,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Start mapping input <tt>&lt;key, value&gt;</tt> pairs.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">MapRunner.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/MapRunner.html#run-org.apache.hadoop.mapred.RecordReader-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">run</a></span>(<a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/MapRunner.html" title="type parameter in MapRunner">K1</a>,<a href="../../../../../org/apache/hadoop/mapred/MapRunner.html" title="type parameter in MapRunner">V1</a>&gt;&nbsp;input,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/MapRunner.html" title="type parameter in MapRunner">K2</a>,<a href="../../../../../org/apache/hadoop/mapred/MapRunner.html" title="type parameter in MapRunner">V2</a>&gt;&nbsp;output,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing subinterfaces, and an explanation">
<caption><span>Subinterfaces of <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Interface and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>interface&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/ComposableRecordReader.html" title="interface in org.apache.hadoop.mapred.join">ComposableRecordReader</a>&lt;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>&gt;</span></code>
<div class="block">Additional operations required of a RecordReader to participate in a join.</div>
</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../org/apache/hadoop/mapred/join/package-summary.html">org.apache.hadoop.mapred.join</a> that implement <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/InnerJoinRecordReader.html" title="class in org.apache.hadoop.mapred.join">InnerJoinRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&gt;</span></code>
<div class="block">Full inner join.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/JoinRecordReader.html" title="class in org.apache.hadoop.mapred.join">JoinRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&gt;</span></code>
<div class="block">Base class for Composite joins returning Tuples of arbitrary Writables.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/MultiFilterRecordReader.html" title="class in org.apache.hadoop.mapred.join">MultiFilterRecordReader</a>&lt;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>&gt;</span></code>
<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"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/OuterJoinRecordReader.html" title="class in org.apache.hadoop.mapred.join">OuterJoinRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&gt;</span></code>
<div class="block">Full outer join.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/OverrideRecordReader.html" title="class in org.apache.hadoop.mapred.join">OverrideRecordReader</a>&lt;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>&gt;</span></code>
<div class="block">Prefer the &quot;rightmost&quot; data source for this key.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/WrappedRecordReader.html" title="class in org.apache.hadoop.mapred.join">WrappedRecordReader</a>&lt;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>&gt;</span></code>
<div class="block">Proxy class for a RecordReader participating in the join framework.</div>
</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList"><a name="org.apache.hadoop.mapred.lib">
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</a>
<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing classes, and an explanation">
<caption><span>Classes in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a> that implement <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="class in org.apache.hadoop.mapred.lib">CombineFileRecordReader</a>&lt;K,V&gt;</span></code>
<div class="block">A generic RecordReader that can hand out different recordReaders
for each chunk in a <a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib"><code>CombineFileSplit</code></a>.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReaderWrapper.html" title="class in org.apache.hadoop.mapred.lib">CombineFileRecordReaderWrapper</a>&lt;K,V&gt;</span></code>
<div class="block">A wrapper class for a record reader that handles a single file split.</div>
</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing fields, and an explanation">
<caption><span>Fields in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a> declared as <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CombineFileRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#curReader">curReader</a></span></code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing fields, and an explanation">
<caption><span>Fields in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a> with type parameters of type <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/reflect/Constructor.html?is-external=true" title="class or interface in java.lang.reflect">Constructor</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</a>&gt;&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CombineFileRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#rrConstructor">rrConstructor</a></span></code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a> that return <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>,<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CombineTextInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineTextInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/CombineSequenceFileInputFormat.html" title="type parameter in CombineSequenceFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineSequenceFileInputFormat.html" title="type parameter in CombineSequenceFileInputFormat">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CombineSequenceFileInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineSequenceFileInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;conf,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>,<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">NLineInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/NLineInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;genericSplit,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">V</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CombineFileInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">This is not implemented yet.</div>
</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a> with parameters of type <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">MultithreadedMapRunner.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/MultithreadedMapRunner.html#run-org.apache.hadoop.mapred.RecordReader-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">run</a></span>(<a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/MultithreadedMapRunner.html" title="type parameter in MultithreadedMapRunner">K1</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/MultithreadedMapRunner.html" title="type parameter in MultithreadedMapRunner">V1</a>&gt;&nbsp;input,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/MultithreadedMapRunner.html" title="type parameter in MultithreadedMapRunner">K2</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/MultithreadedMapRunner.html" title="type parameter in MultithreadedMapRunner">V2</a>&gt;&nbsp;output,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>&nbsp;</td>
</tr>
</tbody>
</table>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing constructors, and an explanation">
<caption><span>Constructor parameters in <a href="../../../../../org/apache/hadoop/mapred/lib/package-summary.html">org.apache.hadoop.mapred.lib</a> with type arguments of type <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colOne" scope="col">Constructor and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html#CombineFileRecordReader-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.lib.CombineFileSplit-org.apache.hadoop.mapred.Reporter-java.lang.Class-">CombineFileRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileSplit.html" title="class in org.apache.hadoop.mapred.lib">CombineFileSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">V</a>&gt;&gt;&nbsp;rrClass)</code>
<div class="block">A generic RecordReader that can hand out different recordReaders
for each chunk in the CombineFileSplit.</div>
</td>
</tr>
</tbody>
</table>
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<li class="blockList"><a name="org.apache.hadoop.mapred.lib.db">
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapred/lib/db/package-summary.html">org.apache.hadoop.mapred.lib.db</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
<caption><span>Methods in <a href="../../../../../org/apache/hadoop/mapred/lib/db/package-summary.html">org.apache.hadoop.mapred.lib.db</a> that return <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
<tr>
<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
</tr>
<tbody>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/db/DBInputFormat.html" title="type parameter in DBInputFormat">T</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">DBInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/db/DBInputFormat.html#getRecordReader-org.apache.hadoop.mapred.InputSplit-org.apache.hadoop.mapred.JobConf-org.apache.hadoop.mapred.Reporter-">getRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapred/JobConf.html" title="class in org.apache.hadoop.mapred">JobConf</a>&nbsp;job,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Get the <a href="../../../../../org/apache/hadoop/mapred/RecordReader.html" title="interface in org.apache.hadoop.mapred"><code>RecordReader</code></a> for the given <a href="../../../../../org/apache/hadoop/mapred/InputSplit.html" title="interface in org.apache.hadoop.mapred"><code>InputSplit</code></a>.</div>
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