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<h2 title="Uses of Class org.apache.hadoop.mapreduce.RecordReader" class="title">Uses of Class<br>org.apache.hadoop.mapreduce.RecordReader</h2>
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<caption><span>Packages that use <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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.lib">org.apache.hadoop.mapred.lib</a></td>
<td class="colLast">&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce</a></td>
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<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapreduce.lib.db">org.apache.hadoop.mapreduce.lib.db</a></td>
<td class="colLast">&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapreduce.lib.input">org.apache.hadoop.mapreduce.lib.input</a></td>
<td class="colLast">&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><a href="#org.apache.hadoop.mapreduce.lib.join">org.apache.hadoop.mapreduce.lib.join</a></td>
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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 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/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/package-summary.html">org.apache.hadoop.mapreduce</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/mapreduce/package-summary.html">org.apache.hadoop.mapreduce</a> that return <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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>
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<td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/InputFormat.html" title="type parameter in InputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/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/mapreduce/InputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>
<div class="block">Create a record reader for a given split.</div>
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/package-summary.html">org.apache.hadoop.mapreduce.lib.db</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing subclasses, and an explanation">
<caption><span>Subclasses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/package-summary.html">org.apache.hadoop.mapreduce.lib.db</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/mapreduce/lib/db/DataDrivenDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">DataDrivenDBRecordReader</a>&lt;T extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</span></code>
<div class="block">A RecordReader that reads records from a SQL table,
using data-driven WHERE clause splits.</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/mapreduce/lib/db/DBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">DBRecordReader</a>&lt;T extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</span></code>
<div class="block">A RecordReader that reads records from a SQL table.</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/mapreduce/lib/db/MySQLDataDrivenDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">MySQLDataDrivenDBRecordReader</a>&lt;T extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</span></code>
<div class="block">A RecordReader that reads records from a MySQL table via DataDrivenDBRecordReader</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/mapreduce/lib/db/MySQLDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">MySQLDBRecordReader</a>&lt;T extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</span></code>
<div class="block">A RecordReader that reads records from a MySQL table.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/db/OracleDataDrivenDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">OracleDataDrivenDBRecordReader</a>&lt;T extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</span></code>
<div class="block">A RecordReader that reads records from a Oracle table via DataDrivenDBRecordReader</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/mapreduce/lib/db/OracleDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">OracleDBRecordReader</a>&lt;T extends <a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</span></code>
<div class="block">A RecordReader that reads records from an Oracle SQL table.</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/mapreduce/lib/db/package-summary.html">org.apache.hadoop.mapreduce.lib.db</a> that return <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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>
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<tbody>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/db/OracleDataDrivenDBInputFormat.html" title="type parameter in OracleDataDrivenDBInputFormat">T</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">OracleDataDrivenDBInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/db/OracleDataDrivenDBInputFormat.html#createDBRecordReader-org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit-org.apache.hadoop.conf.Configuration-">createDBRecordReader</a></span>(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit&nbsp;split,
<a href="../../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/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/mapreduce/lib/db/DBInputFormat.html#createDBRecordReader-org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit-org.apache.hadoop.conf.Configuration-">createDBRecordReader</a></span>(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit&nbsp;split,
<a href="../../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/db/DataDrivenDBInputFormat.html" title="type parameter in DataDrivenDBInputFormat">T</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">DataDrivenDBInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/db/DataDrivenDBInputFormat.html#createDBRecordReader-org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit-org.apache.hadoop.conf.Configuration-">createDBRecordReader</a></span>(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit&nbsp;split,
<a href="../../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/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/mapreduce/lib/db/DBInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>
<div class="block">Create a record reader for a given split.</div>
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing subclasses, and an explanation">
<caption><span>Subclasses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</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/mapreduce/lib/input/CombineFileRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.input">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/mapreduce/lib/input/CombineFileSplit.html" title="class in org.apache.hadoop.mapreduce.lib.input"><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/mapreduce/lib/input/CombineFileRecordReaderWrapper.html" title="class in org.apache.hadoop.mapreduce.lib.input">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>
<tr class="altColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/input/KeyValueLineRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.input">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/mapreduce/lib/input/SequenceFileAsTextRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.input">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/mapreduce/lib/input/SequenceFileRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.input">SequenceFileRecordReader</a>&lt;K,V&gt;</span></code>
<div class="block">An <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce"><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>
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<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/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</a> declared as <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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>
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<tbody>
<tr class="altColor">
<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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/mapreduce/lib/input/CombineFileRecordReader.html#curReader">curReader</a></span></code>&nbsp;</td>
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<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/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</a> with type parameters of type <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a></span><span class="tabEnd">&nbsp;</span></caption>
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<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;? extends <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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/mapreduce/lib/input/CombineFileRecordReader.html#rrConstructor">rrConstructor</a></span></code>&nbsp;</td>
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<caption><span>Methods in <a href="../../../../../org/apache/hadoop/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</a> that return <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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>
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<tbody>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/TextInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/CombineTextInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/SequenceFileAsTextInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/FixedLengthInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFilter.html" title="type parameter in SequenceFileInputFilter">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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/mapreduce/lib/input/SequenceFileInputFilter.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>
<div class="block">Create a record reader for the given split</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineSequenceFileInputFormat.html" title="type parameter in CombineSequenceFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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/mapreduce/lib/input/CombineSequenceFileInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/SequenceFileInputFormat.html" title="type parameter in SequenceFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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/mapreduce/lib/input/SequenceFileInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/NLineInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;genericSplit,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>abstract <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileInputFormat.html" title="type parameter in CombineFileInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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/mapreduce/lib/input/CombineFileInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>
<div class="block">This is not implemented yet.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/SequenceFileAsBinaryInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</code>&nbsp;</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code><a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/KeyValueTextInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;genericSplit,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context)</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/mapreduce/lib/input/package-summary.html">org.apache.hadoop.mapreduce.lib.input</a> with type arguments of type <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/lib/input/CombineFileRecordReader.html#CombineFileRecordReader-org.apache.hadoop.mapreduce.lib.input.CombineFileSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-java.lang.Class-">CombineFileRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileSplit.html" title="class in org.apache.hadoop.mapreduce.lib.input">CombineFileSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;context,
<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/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/CombineFileRecordReader.html" title="type parameter in CombineFileRecordReader">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/input/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.mapreduce.lib.join">
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<h3>Uses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/lib/join/package-summary.html">org.apache.hadoop.mapreduce.lib.join</a></h3>
<table class="useSummary" border="0" cellpadding="3" cellspacing="0" summary="Use table, listing subclasses, and an explanation">
<caption><span>Subclasses of <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a> in <a href="../../../../../org/apache/hadoop/mapreduce/lib/join/package-summary.html">org.apache.hadoop.mapreduce.lib.join</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/mapreduce/lib/join/ComposableRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">ComposableRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;,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>
<tr class="rowColor">
<td class="colFirst"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/join/CompositeRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">CompositeRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;,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>&gt;</span></code>
<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"><code>class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/join/InnerJoinRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">InnerJoinRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;&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/mapreduce/lib/join/JoinRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">JoinRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;&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/mapreduce/lib/join/MultiFilterRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">MultiFilterRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;,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/mapreduce/lib/join/OuterJoinRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">OuterJoinRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;&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/mapreduce/lib/join/OverrideRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">OverrideRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;,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/mapreduce/lib/join/WrappedRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.join">WrappedRecordReader</a>&lt;K extends <a href="../../../../../org/apache/hadoop/io/WritableComparable.html" title="interface in org.apache.hadoop.io">WritableComparable</a>&lt;?&gt;,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>
<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/mapreduce/lib/join/package-summary.html">org.apache.hadoop.mapreduce.lib.join</a> that return <a href="../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">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/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">RecordReader</a>&lt;<a href="../../../../../org/apache/hadoop/mapreduce/lib/join/CompositeInputFormat.html" title="type parameter in CompositeInputFormat">K</a>,<a href="../../../../../org/apache/hadoop/mapreduce/lib/join/TupleWritable.html" title="class in org.apache.hadoop.mapreduce.lib.join">TupleWritable</a>&gt;</code></td>
<td class="colLast"><span class="typeNameLabel">CompositeInputFormat.</span><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/mapreduce/lib/join/CompositeInputFormat.html#createRecordReader-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">createRecordReader</a></span>(<a href="../../../../../org/apache/hadoop/mapreduce/InputSplit.html" title="class in org.apache.hadoop.mapreduce">InputSplit</a>&nbsp;split,
<a href="../../../../../org/apache/hadoop/mapreduce/TaskAttemptContext.html" title="interface in org.apache.hadoop.mapreduce">TaskAttemptContext</a>&nbsp;taskContext)</code>
<div class="block">Construct a CompositeRecordReader for the children of this InputFormat
as defined in the init expression.</div>
</td>
</tr>
</tbody>
</table>
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