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<h2 title="Uses of Interface org.apache.hadoop.mapred.OutputCollector" class="title">Uses of Interface<br>org.apache.hadoop.mapred.OutputCollector</h2>
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<ul class="blockList">
<li class="blockList">
<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/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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.lib">org.apache.hadoop.mapred.lib</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapred.lib.aggregate">org.apache.hadoop.mapred.lib.aggregate</a></td>
<td class="colLast">&nbsp;</td>
</tr>
</tbody>
</table>
</li>
<li class="blockList">
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<li class="blockList"><a name="org.apache.hadoop.mapred">
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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 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/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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">Mapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/Mapper.html#map-K1-V1-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">K1</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">V1</a>&nbsp;value,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">K2</a>,<a href="../../../../../org/apache/hadoop/mapred/Mapper.html" title="type parameter in Mapper">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">Maps a single input key/value pair into an intermediate key/value pair.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">Reducer.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/Reducer.html#reduce-K2-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">K2</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">V2</a>&gt;&nbsp;values,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">K3</a>,<a href="../../../../../org/apache/hadoop/mapred/Reducer.html" title="type parameter in Reducer">V3</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"><i>Reduces</i> values for a given key.</div>
</td>
</tr>
<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>
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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 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/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a></code></td>
<td class="colLast"><span class="typeNameLabel">MultipleOutputs.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/MultipleOutputs.html#getCollector-java.lang.String-org.apache.hadoop.mapred.Reporter-">getCollector</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;namedOutput,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Gets the output collector for a named output.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a></code></td>
<td class="colLast"><span class="typeNameLabel">MultipleOutputs.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/MultipleOutputs.html#getCollector-java.lang.String-java.lang.String-org.apache.hadoop.mapred.Reporter-">getCollector</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;namedOutput,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;multiName,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;reporter)</code>
<div class="block">Gets the output collector for a multi named output.</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/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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">RegexMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/RegexMapper.html#map-K-org.apache.hadoop.io.Text-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/RegexMapper.html" title="type parameter in RegexMapper">K</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;value,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</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>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">TokenCountMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/TokenCountMapper.html#map-K-org.apache.hadoop.io.Text-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/TokenCountMapper.html" title="type parameter in TokenCountMapper">K</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;value,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</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>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">IdentityMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/IdentityMapper.html#map-K-V-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/IdentityMapper.html" title="type parameter in IdentityMapper">K</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/mapred/lib/IdentityMapper.html" title="type parameter in IdentityMapper">V</a>&nbsp;val,
<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/IdentityMapper.html" title="type parameter in IdentityMapper">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/IdentityMapper.html" title="type parameter in IdentityMapper">V</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">The identity function.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">FieldSelectionMapReduce.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.html#map-K-V-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.html" title="type parameter in FieldSelectionMapReduce">K</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.html" title="type parameter in FieldSelectionMapReduce">V</a>&nbsp;val,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&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">The identify function.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">InverseMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/InverseMapper.html#map-K-V-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/InverseMapper.html" title="type parameter in InverseMapper">K</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/mapred/lib/InverseMapper.html" title="type parameter in InverseMapper">V</a>&nbsp;value,
<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/InverseMapper.html" title="type parameter in InverseMapper">V</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/InverseMapper.html" title="type parameter in InverseMapper">K</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">The inverse function.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ChainMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/ChainMapper.html#map-java.lang.Object-java.lang.Object-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;value,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&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">Chains the <code>map(...)</code> methods of the Mappers in the chain.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">LongSumReducer.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/LongSumReducer.html#reduce-K-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/LongSumReducer.html" title="type parameter in LongSumReducer">K</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>&gt;&nbsp;values,
<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/LongSumReducer.html" title="type parameter in LongSumReducer">K</a>,<a href="../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</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>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">IdentityReducer.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/IdentityReducer.html#reduce-K-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/IdentityReducer.html" title="type parameter in IdentityReducer">K</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/mapred/lib/IdentityReducer.html" title="type parameter in IdentityReducer">V</a>&gt;&nbsp;values,
<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/IdentityReducer.html" title="type parameter in IdentityReducer">K</a>,<a href="../../../../../org/apache/hadoop/mapred/lib/IdentityReducer.html" title="type parameter in IdentityReducer">V</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">Writes all keys and values directly to output.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ChainReducer.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/ChainReducer.html#reduce-java.lang.Object-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&nbsp;values,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a>&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">Chains the <code>reduce(...)</code> method of the Reducer with the
<code>map(...) </code> methods of the Mappers in the chain.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">FieldSelectionMapReduce.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/FieldSelectionMapReduce.html#reduce-org.apache.hadoop.io.Text-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;&nbsp;values,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&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>
<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>
</li>
<li class="blockList"><a name="org.apache.hadoop.mapred.lib.aggregate">
<!-- -->
</a>
<h3>Uses of <a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</a> in <a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/package-summary.html">org.apache.hadoop.mapred.lib.aggregate</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/aggregate/package-summary.html">org.apache.hadoop.mapred.lib.aggregate</a> with parameters of type <a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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">ValueAggregatorMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorMapper.html#map-K1-V1-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorMapper.html" title="type parameter in ValueAggregatorMapper">K1</a>&nbsp;key,
<a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorMapper.html" title="type parameter in ValueAggregatorMapper">V1</a>&nbsp;value,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&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">the map function.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ValueAggregatorCombiner.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorCombiner.html#map-K1-V1-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorCombiner.html" title="type parameter in ValueAggregatorCombiner">K1</a>&nbsp;arg0,
<a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorCombiner.html" title="type parameter in ValueAggregatorCombiner">V1</a>&nbsp;arg1,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&nbsp;arg2,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;arg3)</code>
<div class="block">Do nothing.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ValueAggregatorReducer.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorReducer.html#map-K1-V1-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">map</a></span>(<a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorReducer.html" title="type parameter in ValueAggregatorReducer">K1</a>&nbsp;arg0,
<a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorReducer.html" title="type parameter in ValueAggregatorReducer">V1</a>&nbsp;arg1,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&nbsp;arg2,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;arg3)</code>
<div class="block">Do nothing.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ValueAggregatorMapper.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorMapper.html#reduce-org.apache.hadoop.io.Text-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;arg0,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;&nbsp;arg1,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&nbsp;arg2,
<a href="../../../../../org/apache/hadoop/mapred/Reporter.html" title="interface in org.apache.hadoop.mapred">Reporter</a>&nbsp;arg3)</code>
<div class="block">Do nothing.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ValueAggregatorCombiner.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorCombiner.html#reduce-org.apache.hadoop.io.Text-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;&nbsp;values,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&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">Combines values for a given key.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><span class="typeNameLabel">ValueAggregatorReducer.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/lib/aggregate/ValueAggregatorReducer.html#reduce-org.apache.hadoop.io.Text-java.util.Iterator-org.apache.hadoop.mapred.OutputCollector-org.apache.hadoop.mapred.Reporter-">reduce</a></span>(<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&nbsp;key,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Iterator.html?is-external=true" title="class or interface in java.util">Iterator</a>&lt;<a href="../../../../../org/apache/hadoop/io/Text.html" title="class in org.apache.hadoop.io">Text</a>&gt;&nbsp;values,
<a href="../../../../../org/apache/hadoop/mapred/OutputCollector.html" title="interface in org.apache.hadoop.mapred">OutputCollector</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;&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>
</li>
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