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<div class="subTitle">org.apache.hadoop.mapreduce.lib.db</div>
<h2 title="Class DBRecordReader" class="title">Class DBRecordReader&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;</h2>
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<ul class="inheritance">
<li><a href="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html" title="class in org.apache.hadoop.mapreduce">org.apache.hadoop.mapreduce.RecordReader</a>&lt;<a href="../../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>,T&gt;</li>
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<ul class="inheritance">
<li>org.apache.hadoop.mapreduce.lib.db.DBRecordReader&lt;T&gt;</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></dd>
</dl>
<dl>
<dt>Direct Known Subclasses:</dt>
<dd><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DataDrivenDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">DataDrivenDBRecordReader</a>, <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/MySQLDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">MySQLDBRecordReader</a>, <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/OracleDBRecordReader.html" title="class in org.apache.hadoop.mapreduce.lib.db">OracleDBRecordReader</a></dd>
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<pre>@InterfaceAudience.Public
@InterfaceStability.Evolving
public class <span class="typeNameLabel">DBRecordReader&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>
extends <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>,T&gt;</pre>
<div class="block">A RecordReader that reads records from a SQL table.
Emits LongWritables containing the record number as
key and DBWritables as value.</div>
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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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<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/sql/PreparedStatement.html?is-external=true" title="class or interface in java.sql">PreparedStatement</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#statement">statement</a></span></code>&nbsp;</td>
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<th class="colOne" scope="col">Constructor and Description</th>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#DBRecordReader-org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit-java.lang.Class-org.apache.hadoop.conf.Configuration-java.sql.Connection-org.apache.hadoop.mapreduce.lib.db.DBConfiguration-java.lang.String-java.lang.String:A-java.lang.String-">DBRecordReader</a></span>(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit&nbsp;split,
<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/mapreduce/lib/db/DBRecordReader.html" title="type parameter in DBRecordReader">T</a>&gt;&nbsp;inputClass,
<a href="../../../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf,
<a href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html?is-external=true" title="class or interface in java.sql">Connection</a>&nbsp;conn,
<a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBConfiguration.html" title="class in org.apache.hadoop.mapreduce.lib.db">DBConfiguration</a>&nbsp;dbConfig,
<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;cond,
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<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;table)</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#close--">close</a></span>()</code>
<div class="block">Close the record reader.</div>
</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html" title="type parameter in DBRecordReader">T</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#createValue--">createValue</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;&nbsp;</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html?is-external=true" title="class or interface in java.sql">ResultSet</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#executeQuery-java.lang.String-">executeQuery</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;query)</code>&nbsp;</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getConditions--">getConditions</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html?is-external=true" title="class or interface in java.sql">Connection</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getConnection--">getConnection</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getCurrentKey--">getCurrentKey</a></span>()</code>
<div class="block">Get the current key</div>
</td>
</tr>
<tr id="i6" class="altColor">
<td class="colFirst"><code><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html" title="type parameter in DBRecordReader">T</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getCurrentValue--">getCurrentValue</a></span>()</code>
<div class="block">Get the current value.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>protected <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBConfiguration.html" title="class in org.apache.hadoop.mapreduce.lib.db">DBConfiguration</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getDBConf--">getDBConf</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>protected <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>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getFieldNames--">getFieldNames</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i9" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getPos--">getPos</a></span>()</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;&nbsp;</div>
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</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getProgress--">getProgress</a></span>()</code>
<div class="block">The current progress of the record reader through its data.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>protected <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getSelectQuery--">getSelectQuery</a></span>()</code>
<div class="block">Returns the query for selecting the records,
subclasses can override this for custom behaviour.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>protected org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getSplit--">getSplit</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/sql/PreparedStatement.html?is-external=true" title="class or interface in java.sql">PreparedStatement</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getStatement--">getStatement</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>protected <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></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#getTableName--">getTableName</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#initialize-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">initialize</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">Called once at initialization.</div>
</td>
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<tr id="i16" class="altColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#next-org.apache.hadoop.io.LongWritable-T-">next</a></span>(<a href="../../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>&nbsp;key,
<a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html" title="type parameter in DBRecordReader">T</a>&nbsp;value)</code>
<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;
<div class="block"><span class="deprecationComment">Use <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#nextKeyValue--"><code>nextKeyValue()</code></a></span></div>
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</td>
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<tr id="i17" class="rowColor">
<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#nextKeyValue--">nextKeyValue</a></span>()</code>
<div class="block">Read the next key, value pair.</div>
</td>
</tr>
<tr id="i18" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#setStatement-java.sql.PreparedStatement-">setStatement</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/sql/PreparedStatement.html?is-external=true" title="class or interface in java.sql">PreparedStatement</a>&nbsp;stmt)</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;java.lang.<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></h3>
<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<h3>Field Detail</h3>
<a name="statement">
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<h4>statement</h4>
<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/sql/PreparedStatement.html?is-external=true" title="class or interface in java.sql">PreparedStatement</a> statement</pre>
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<a name="DBRecordReader-org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit-java.lang.Class-org.apache.hadoop.conf.Configuration-java.sql.Connection-org.apache.hadoop.mapreduce.lib.db.DBConfiguration-java.lang.String-java.lang.String:A-java.lang.String-">
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<h4>DBRecordReader</h4>
<pre>public&nbsp;DBRecordReader(org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit&nbsp;split,
<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/mapreduce/lib/db/DBRecordReader.html" title="type parameter in DBRecordReader">T</a>&gt;&nbsp;inputClass,
<a href="../../../../../../org/apache/hadoop/conf/Configuration.html" title="class in org.apache.hadoop.conf">Configuration</a>&nbsp;conf,
<a href="https://docs.oracle.com/javase/8/docs/api/java/sql/Connection.html?is-external=true" title="class or interface in java.sql">Connection</a>&nbsp;conn,
<a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBConfiguration.html" title="class in org.apache.hadoop.mapreduce.lib.db">DBConfiguration</a>&nbsp;dbConfig,
<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;cond,
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<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>split</code> - The InputSplit to read data for</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></code></dd>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/sql/ResultSet.html?is-external=true" title="class or interface in java.sql">ResultSet</a>&nbsp;executeQuery(<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;query)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></pre>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/sql/SQLException.html?is-external=true" title="class or interface in java.sql">SQLException</a></code></dd>
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<pre>protected&nbsp;<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;getSelectQuery()</pre>
<div class="block">Returns the query for selecting the records,
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<pre>public&nbsp;void&nbsp;close()
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Close the record reader.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true#close--" title="class or interface in java.io">close</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true#close--" title="class or interface in java.lang">close</a></code>&nbsp;in interface&nbsp;<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a></code></dd>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#close--">close</a></code>&nbsp;in class&nbsp;<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/DBRecordReader.html" title="type parameter in DBRecordReader">T</a> extends <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a>,
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<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#initialize-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">RecordReader</a></code></span></div>
<div class="block">Called once at initialization.</div>
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<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#initialize-org.apache.hadoop.mapreduce.InputSplit-org.apache.hadoop.mapreduce.TaskAttemptContext-">initialize</a></code>&nbsp;in class&nbsp;<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/DBRecordReader.html" title="type parameter in DBRecordReader">T</a> extends <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>split</code> - the split that defines the range of records to read</dd>
<dd><code>context</code> - the information about the task</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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<pre>public&nbsp;<a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html" title="type parameter in DBRecordReader">T</a>&nbsp;getCurrentValue()</pre>
<div class="block">Get the current value.</div>
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<dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#getCurrentValue--">getCurrentValue</a></code>&nbsp;in class&nbsp;<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/DBRecordReader.html" title="type parameter in DBRecordReader">T</a> extends <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</code></dd>
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;</div>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Deprecated.html?is-external=true" title="class or interface in java.lang">@Deprecated</a>
public&nbsp;boolean&nbsp;next(<a href="../../../../../../org/apache/hadoop/io/LongWritable.html" title="class in org.apache.hadoop.io">LongWritable</a>&nbsp;key,
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<div class="block"><span class="deprecatedLabel">Deprecated.</span>&nbsp;<span class="deprecationComment">Use <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBRecordReader.html#nextKeyValue--"><code>nextKeyValue()</code></a></span></div>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;float&nbsp;getProgress()
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<div class="block">The current progress of the record reader through its data.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../../org/apache/hadoop/mapreduce/RecordReader.html#getProgress--">getProgress</a></code>&nbsp;in class&nbsp;<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/DBRecordReader.html" title="type parameter in DBRecordReader">T</a> extends <a href="../../../../../../org/apache/hadoop/mapreduce/lib/db/DBWritable.html" title="interface in org.apache.hadoop.mapreduce.lib.db">DBWritable</a>&gt;</code></dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a number between 0.0 and 1.0 that is the fraction of the data read</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>public&nbsp;boolean&nbsp;nextKeyValue()
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<div class="block">Read the next key, value pair.</div>
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<dt><span class="returnLabel">Returns:</span></dt>
<dd>true if a key/value pair was read</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>protected&nbsp;org.apache.hadoop.mapreduce.lib.db.DBInputFormat.DBInputSplit&nbsp;getSplit()</pre>
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