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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">  <html lang="en"> <head>  <title>AbstractColumnFamilyInputFormat (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/AbstractColumnFamilyInputFormat.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="../../../../org/apache/cassandra/hadoop/ColumnFamilyInputFormat.html" title="class in org.apache.cassandra.hadoop">ColumnFamilyInputFormat</a>, <a href="../../../../org/apache/cassandra/hadoop/cql3/CqlInputFormat.html" title="class in org.apache.cassandra.hadoop.cql3">CqlInputFormat</a></dd> </dl> <hr> <br> <pre>public abstract class <span class="strong">AbstractColumnFamilyInputFormat<K,Y></span> extends org.apache.hadoop.mapreduce.InputFormat<K,Y> implements org.apache.hadoop.mapred.InputFormat<K,Y></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 java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#CASSANDRA_HADOOP_MAX_KEY_SIZE">CASSANDRA_HADOOP_MAX_KEY_SIZE</a></strong></code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>static int</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT">CASSANDRA_HADOOP_MAX_KEY_SIZE_DEFAULT</a></strong></code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>static java.lang.String</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#MAPRED_TASK_ID">MAPRED_TASK_ID</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/AbstractColumnFamilyInputFormat.html#AbstractColumnFamilyInputFormat()">AbstractColumnFamilyInputFormat</a></strong>()</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>static <a href="../../../../org/apache/cassandra/thrift/Cassandra.Client.html" title="class in org.apache.cassandra.thrift">Cassandra.Client</a></code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#createAuthenticatedClient(java.lang.String,%20int,%20org.apache.hadoop.conf.Configuration)">createAuthenticatedClient</a></strong>(java.lang.String location, int port, org.apache.hadoop.conf.Configuration conf)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>org.apache.hadoop.mapred.InputSplit[]</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#getSplits(org.apache.hadoop.mapred.JobConf,%20int)">getSplits</a></strong>(org.apache.hadoop.mapred.JobConf jobConf, int numSplits)</code> </td> </tr> <tr class="altColor"> <td class="colFirst"><code>java.util.List<org.apache.hadoop.mapreduce.InputSplit></code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#getSplits(org.apache.hadoop.mapreduce.JobContext)">getSplits</a></strong>(org.apache.hadoop.mapreduce.JobContext context)</code> </td> </tr> <tr class="rowColor"> <td class="colFirst"><code>protected void</code></td> <td class="colLast"><code><strong><a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html#validateConfiguration(org.apache.hadoop.conf.Configuration)">validateConfiguration</a></strong>(org.apache.hadoop.conf.Configuration conf)</code> </td> </tr> </table> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_org.apache.hadoop.mapreduce.InputFormat">  </a> <h3>Methods inherited from class org.apache.hadoop.mapreduce.InputFormat</h3> <code>createRecordReader</code></li> </ul> <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> <ul class="blockList"> <li class="blockList"><a name="methods_inherited_from_class_org.apache.hadoop.mapred.InputFormat">  </a> <h3>Methods inherited from interface org.apache.hadoop.mapred.InputFormat</h3> <code>getRecordReader</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="MAPRED_TASK_ID">  </a> <ul class="blockList"> <li class="blockList"> <h4>MAPRED_TASK_ID</h4> <pre>public static final java.lang.String MAPRED_TASK_ID</pre> <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../constant-values.html#org.apache.cassandra.hadoop.AbstractColumnFamilyInputFormat.MAPRED_TASK_ID">Constant Field Values</a></dd></dl> </li> </ul> <a name="CASSANDRA_HADOOP_MAX_KEY_SIZE">  </a> <ul class="blockList"> <li class="blockList"> <h4>CASSANDRA_HADOOP_MAX_KEY_SIZE</h4> <pre>public static final java.lang.String CASSANDRA_HADOOP_MAX_KEY_SIZE</pre> <dl><dt><span class="strong">See Also:</span></dt><dd><a href="../../../../constant-values.html#org.apache.cassandra.hadoop.AbstractColumnFamilyInputFormat.CASSANDRA_HADOOP_MAX_KEY_SIZE">Constant Field Values</a></dd></dl> </li> </ul> <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.AbstractColumnFamilyInputFormat.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="AbstractColumnFamilyInputFormat()">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>AbstractColumnFamilyInputFormat</h4> <pre>public AbstractColumnFamilyInputFormat()</pre> </li> </ul> </li> </ul>  <ul class="blockList"> <li class="blockList"><a name="method_detail">  </a> <h3>Method Detail</h3> <a name="validateConfiguration(org.apache.hadoop.conf.Configuration)">  </a> <ul class="blockList"> <li class="blockList"> <h4>validateConfiguration</h4> <pre>protected void validateConfiguration(org.apache.hadoop.conf.Configuration conf)</pre> </li> </ul> <a name="createAuthenticatedClient(java.lang.String, int, org.apache.hadoop.conf.Configuration)">  </a> <ul class="blockList"> <li class="blockList"> <h4>createAuthenticatedClient</h4> <pre>public static <a href="../../../../org/apache/cassandra/thrift/Cassandra.Client.html" title="class in org.apache.cassandra.thrift">Cassandra.Client</a> createAuthenticatedClient(java.lang.String location, int port, org.apache.hadoop.conf.Configuration conf) throws java.lang.Exception</pre> <dl><dt><span class="strong">Throws:</span></dt> <dd><code>java.lang.Exception</code></dd></dl> </li> </ul> <a name="getSplits(org.apache.hadoop.mapreduce.JobContext)">  </a> <ul class="blockList"> <li class="blockList"> <h4>getSplits</h4> <pre>public java.util.List<org.apache.hadoop.mapreduce.InputSplit> getSplits(org.apache.hadoop.mapreduce.JobContext context) throws java.io.IOException</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>getSplits</code> in class <code>org.apache.hadoop.mapreduce.InputFormat<<a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html" title="type parameter in AbstractColumnFamilyInputFormat">K</a>,<a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html" title="type parameter in AbstractColumnFamilyInputFormat">Y</a>></code></dd> <dt><span class="strong">Throws:</span></dt> <dd><code>java.io.IOException</code></dd></dl> </li> </ul> <a name="getSplits(org.apache.hadoop.mapred.JobConf, int)">  </a> <ul class="blockListLast"> <li class="blockList"> <h4>getSplits</h4> <pre>public org.apache.hadoop.mapred.InputSplit[] getSplits(org.apache.hadoop.mapred.JobConf jobConf, int numSplits) throws java.io.IOException</pre> <dl> <dt><strong>Specified by:</strong></dt> <dd><code>getSplits</code> in interface <code>org.apache.hadoop.mapred.InputFormat<<a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html" title="type parameter in AbstractColumnFamilyInputFormat">K</a>,<a href="../../../../org/apache/cassandra/hadoop/AbstractColumnFamilyInputFormat.html" title="type parameter in AbstractColumnFamilyInputFormat">Y</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 class="navBarCell1Rev">Class</li> <li><a href="class-use/AbstractColumnFamilyInputFormat.html">Use</a></li> <li><a href="package-tree.html">Tree</a></li> <li><a href="../../../../deprecated-list.html">Deprecated</a></li> <li><a href="../../../../index-all.html">Index</a></li> <li><a href="../../../../help-doc.html">Help</a></li> </ul> </div> <div class="subNav"> <ul class="navList"> <li>Prev Class</li> <li><a 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