cassandra-server

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>ColumnFamilyRecordReader (apache-cassandra API)</title> <meta name="date" content="2014-09-07"> <link rel="stylesheet" type="text/css" href="../../../../stylesheet.css" title="Style"> </head> <body> <script type="text/javascript"> </script> <noscript> <div>JavaScript is disabled on your browser.</div> </noscript>  <div class="topNav"><a name="navbar_top">  </a><a href="#skip-navbar_top" title="Skip navigation links"></a><a name="navbar_top_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li class="navBarCell1Rev">Class</li> <li><a href="class-use/ColumnFamilyRecordReader.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../deprecated-list.html">Deprecated</a></li> <li><a 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href="#field_summary">Field</a> | </li> <li><a href="#constructor_summary">Constr</a> | </li> <li><a href="#method_summary">Method</a></li> </ul> <ul class="subNavList"> <li>Detail: </li> <li><a href="#field_detail">Field</a> | </li> <li><a href="#constructor_detail">Constr</a> | </li> <li><a href="#method_detail">Method</a></li> </ul> </div> <a name="skip-navbar_top">  </a></div>   <div class="header"> <div class="subTitle">org.apache.cassandra.hadoop</div> <h2 title="Class ColumnFamilyRecordReader" class="title">Class ColumnFamilyRecordReader</h2> </div> <div class="contentContainer"> <ul class="inheritance"> <li>java.lang.Object</li> <li> <ul class="inheritance"> <li>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></li> <li> <ul class="inheritance"> <li>org.apache.cassandra.hadoop.ColumnFamilyRecordReader</li> </ul> </li> </ul> </li> </ul> <div class="description"> <ul class="blockList"> <li class="blockList"> <dl> <dt>All Implemented Interfaces:</dt> <dd>java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></dd> </dl> <hr> <br> <pre>public class <span class="strong">ColumnFamilyRecordReader</span> extends org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>> implements org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></pre> </li> </ul> </div> <div class="summary"> <ul class="blockList"> <li class="blockList">  <ul class="blockList"> <li class="blockList"><a name="field_summary">  </a> <h3>Field Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Field Summary table, listing fields, and an explanation"> <caption><span>Fields</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Field and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT">CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT</a></strong></code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_summary">  </a> <h3>Constructor Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> <caption><span>Constructors</span><span class="tabEnd"> </span></caption> <tr> <th class="colOne" scope="col">Constructor and Description</th> </tr> <tr class="altColor"> <td class="colOne"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#ColumnFamilyRecordReader()">ColumnFamilyRecordReader</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colOne"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#ColumnFamilyRecordReader(int)">ColumnFamilyRecordReader</a></strong>(int keyBufferSize)</code> </td> </tr> </table> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_summary">  </a> <h3>Method Summary</h3> <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Method Summary table, listing methods, and an explanation"> <caption><span>Methods</span><span class="tabEnd"> </span></caption> <tr> <th class="colFirst" scope="col">Modifier and Type</th> <th class="colLast" scope="col">Method and Description</th> </tr> <tr class="altColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#close()">close</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#createKey()">createKey</a></strong>()</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>></code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#createValue()">createValue</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>java.nio.ByteBuffer</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#getCurrentKey()">getCurrentKey</a></strong>()</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>></code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#getCurrentValue()">getCurrentValue</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>long</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#getPos()">getPos</a></strong>()</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>float</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#getProgress()">getProgress</a></strong>()</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#initialize(org.apache.hadoop.mapreduce.InputSplit,%20org.apache.hadoop.mapreduce.TaskAttemptContext)">initialize</a></strong>(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#next(java.nio.ByteBuffer,%20java.util.SortedMap)">next</a></strong>(java.nio.ByteBuffer key, java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>> value)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>boolean</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/ColumnFamilyRecordReader.html#nextKeyValue()">nextKeyValue</a></strong>()</code> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_java.lang.Object">  </a> <h3>Methods inherited from class java.lang.Object</h3> <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> </ul> </li> </ul> </li> </ul> </div> <div class="details"> <ul class="blockList"> <li class="blockList">  <ul class="blockList"> <li class="blockList"><a name="field_detail">  </a> <h3>Field Detail</h3> <a name="CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT</h4> <pre>public static final int CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT</pre> <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../constant-values.html#org.apache.cassandra.hadoop.ColumnFamilyRecordReader.CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT">Constant Field Values</a></dd></dl> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="constructor_detail">  </a> <h3>Constructor Detail</h3> <a name="ColumnFamilyRecordReader()">  </a> <ul class="blockList"> <li class="blockList"> <h4>ColumnFamilyRecordReader</h4> <pre>public ColumnFamilyRecordReader()</pre> </li> </ul> <a name="ColumnFamilyRecordReader(int)">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>ColumnFamilyRecordReader</h4> <pre>public ColumnFamilyRecordReader(int keyBufferSize)</pre> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_detail">  </a> <h3>Method Detail</h3> <a name="close()">  </a> <ul class="blockList"> <li class="blockList"> <h4>close</h4> <pre>public void close()</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>close</code> in interface <code>java.io.Closeable</code></dd> <dt><strong>Specified by:</strong></dt> <dd><code>close</code> in interface <code>java.lang.AutoCloseable</code></dd> <dt><strong>Specified by:</strong></dt> <dd><code>close</code> in interface <code>org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> <dt><strong>Specified by:</strong></dt> <dd><code>close</code> in class <code>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> </dl> </li> </ul> <a name="getCurrentKey()">  </a> <ul class="blockList"> <li class="blockList"> <h4>getCurrentKey</h4> <pre>public java.nio.ByteBuffer getCurrentKey()</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>getCurrentKey</code> in class <code>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> </dl> </li> </ul> <a name="getCurrentValue()">  </a> <ul class="blockList"> <li class="blockList"> <h4>getCurrentValue</h4> <pre>public java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>> getCurrentValue()</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>getCurrentValue</code> in class <code>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> </dl> </li> </ul> <a name="getProgress()">  </a> <ul class="blockList"> <li class="blockList"> <h4>getProgress</h4> <pre>public float getProgress()</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>getProgress</code> in interface <code>org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> <dt><strong>Specified by:</strong></dt> <dd><code>getProgress</code> in class <code>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> </dl> </li> </ul> <a name="initialize(org.apache.hadoop.mapreduce.InputSplit, org.apache.hadoop.mapreduce.TaskAttemptContext)">  </a> <ul class="blockList"> <li class="blockList"> <h4>initialize</h4> <pre>public void initialize(org.apache.hadoop.mapreduce.InputSplit split, org.apache.hadoop.mapreduce.TaskAttemptContext context) throws java.io.IOException</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>initialize</code> in class <code>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="nextKeyValue()">  </a> <ul class="blockList"> <li class="blockList"> <h4>nextKeyValue</h4> <pre>public boolean nextKeyValue() throws java.io.IOException</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>nextKeyValue</code> in class <code>org.apache.hadoop.mapreduce.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="next(java.nio.ByteBuffer, java.util.SortedMap)">  </a> <ul class="blockList"> <li class="blockList"> <h4>next</h4> <pre>public boolean next(java.nio.ByteBuffer key, java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>> value) throws java.io.IOException</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>next</code> in interface <code>org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="createKey()">  </a> <ul class="blockList"> <li class="blockList"> <h4>createKey</h4> <pre>public java.nio.ByteBuffer createKey()</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>createKey</code> in interface <code>org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> </dl> </li> </ul> <a name="createValue()">  </a> <ul class="blockList"> <li class="blockList"> <h4>createValue</h4> <pre>public java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>> createValue()</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>createValue</code> in interface <code>org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> </dl> </li> </ul> <a name="getPos()">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>getPos</h4> <pre>public long getPos() throws java.io.IOException</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>getPos</code> in interface <code>org.apache.hadoop.mapred.RecordReader<java.nio.ByteBuffer,java.util.SortedMap<java.nio.ByteBuffer,<a href="../../../../org/apache/cassandra/db/Cell.html" title="interface in org.apache.cassandra.db">Cell</a>>></code></dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> </li> </ul> </li> </ul> </div> </div>   <div class="bottomNav"><a name="navbar_bottom">  </a><a href="#skip-navbar_bottom" title="Skip navigation links"></a><a name="navbar_bottom_firstrow">  </a> <ul class="navList" title="Navigation"> <li><a href="../../../../overview-summary.html">Overview</a></li> <li><a href="package-summary.html">Package</a></li> <li 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