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 <h2 title="Uses of Class org.apache.hadoop.io.WritableComparator" class="title">Uses of Class<br>org.apache.hadoop.io.WritableComparator</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/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</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.io">org.apache.hadoop.io</a></td>
 <td class="colLast">
 <div class="block">Generic i/o code for use when reading and writing data to the network,
 to databases, and to files.</div>
 </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.mapreduce.lib.join">org.apache.hadoop.mapreduce.lib.join</a></td>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr class="rowColor">
 <td class="colFirst"><a href="#org.apache.hadoop.mapreduce.lib.partition">org.apache.hadoop.mapreduce.lib.partition</a></td>
 <td class="colLast">&nbsp;</td>
 </tr>
 <tr class="altColor">
 <td class="colFirst"><a href="#org.apache.hadoop.record">org.apache.hadoop.record</a></td>
 <td class="colLast">
 <div class="block">
     (DEPRECATED) Hadoop record I/O contains classes and a record description language
     translator for simplifying serialization and deserialization of records in a
     language-neutral manner.</div>
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 </tr>
 </tbody>
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 <h3>Uses of <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a> in <a href="../../../../../org/apache/hadoop/io/package-summary.html">org.apache.hadoop.io</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/io/package-summary.html">org.apache.hadoop.io</a> that return <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</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>static <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a></code></td>
 <td class="colLast"><span class="typeNameLabel">WritableComparator.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/WritableComparator.html#get-java.lang.Class-">get</a></span>(<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;? extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&gt;&nbsp;c)</code>
 <div class="block">For backwards compatibility.</div>
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 <tr class="rowColor">
 <td class="colFirst"><code>static <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a></code></td>
 <td class="colLast"><span class="typeNameLabel">WritableComparator.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/WritableComparator.html#get-java.lang.Class-org.apache.hadoop.conf.Configuration-">get</a></span>(<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;? extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&gt;&nbsp;c,
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 <div class="block">Get a comparator for a <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io"><code>WritableComparable</code></a> implementation.</div>
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 <th class="colLast" scope="col">Method and Description</th>
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 <td class="colFirst"><code>static void</code></td>
 <td class="colLast"><span class="typeNameLabel">WritableComparator.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/io/WritableComparator.html#define-java.lang.Class-org.apache.hadoop.io.WritableComparator-">define</a></span>(<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>&nbsp;c,
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 <div class="block">Register an optimized comparator for a <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io"><code>WritableComparable</code></a>
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 <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a></code></td>
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 <td class="colFirst"><code>protected void</code></td>
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 <th class="colOne" scope="col">Constructor and Description</th>
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 <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapred/join/CompositeRecordReader.html#CompositeRecordReader-int-int-java.lang.Class-">CompositeRecordReader</a></span>(int&nbsp;id,
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 <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a></code></td>
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 <table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing fields, and an explanation">
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 <th class="colFirst" scope="col">Modifier and Type</th>
 <th class="colLast" scope="col">Field and Description</th>
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 <tr class="altColor">
 <td class="colFirst"><code>protected <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;? extends <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a>&gt;</code></td>
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 <tr class="altColor">
 <td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/io/WritableComparator.html" title="class in org.apache.hadoop.io">WritableComparator</a></code></td>
 <td class="colLast"><span class="typeNameLabel">CompositeRecordReader.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/join/CompositeRecordReader.html#getComparator--">getComparator</a></span>()</code>
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 </td>
 </tr>
 </tbody>
 </table>
 <table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing methods, and an explanation">
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 <th class="colLast" scope="col">Method and Description</th>
 </tr>
 <tbody>
 <tr class="altColor">
 <td class="colFirst"><code>protected void</code></td>
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 <td class="colFirst"><code>class&nbsp;</code></td>
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