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apache / hadoop-site / 952d547359cafef280f0a0324055741b2ed55be1 / . / content / docs / r3.3.1 / hadoop-project-dist / hadoop-hdfs / build / source / hadoop-hdfs-project / hadoop-hdfs / target / api / org / apache / hadoop / hdfs / tools / DFSHAAdmin.html
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<h2 title="Class DFSHAAdmin" class="title">Class DFSHAAdmin</h2>
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<li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li>
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<li>org.apache.hadoop.conf.Configured</li>
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<ul class="inheritance">
<li>org.apache.hadoop.ha.HAAdmin</li>
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<li>org.apache.hadoop.hdfs.tools.DFSHAAdmin</li>
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<pre>public class <span class="typeNameLabel">DFSHAAdmin</span>
extends org.apache.hadoop.ha.HAAdmin</pre>
<div class="block">Class to extend HAAdmin to do a little bit of HDFS-specific configuration.</div>
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<code>errOut, FORCEACTIVE, FORCEMANUAL, out, USAGE</code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#DFSHAAdmin--">DFSHAAdmin</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#addSecurityConfiguration-org.apache.hadoop.conf.Configuration-">addSecurityConfiguration</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>
<div class="block">Add the requisite security principal settings to the given Configuration,
returning a copy.</div>
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<td class="colFirst"><code>protected boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#checkParameterValidity-java.lang.String:A-">checkParameterValidity</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;argv)</code>&nbsp;</td>
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<td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<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>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#getTargetIds-java.lang.String-">getTargetIds</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;namenodeToActivate)</code>
<div class="block">returns the list of all namenode ids for the given configuration.</div>
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<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/hdfs/tools/DFSHAAdmin.html#getUsageString--">getUsageString</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#main-java.lang.String:A-">main</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;argv)</code>&nbsp;</td>
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<td class="colFirst"><code>protected org.apache.hadoop.ha.HAServiceTarget</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#resolveTarget-java.lang.String-">resolveTarget</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;nnId)</code>
<div class="block">Try to map the given namenode ID to its service address.</div>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#runCmd-java.lang.String:A-">runCmd</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;argv)</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/hdfs/tools/DFSHAAdmin.html#setConf-org.apache.hadoop.conf.Configuration-">setConf</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#setErrOut-java.io.PrintStream-">setErrOut</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html?is-external=true" title="class or interface in java.io">PrintStream</a>&nbsp;errOut)</code>&nbsp;</td>
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<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hdfs/tools/DFSHAAdmin.html#setOut-java.io.PrintStream-">setOut</a></span>(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html?is-external=true" title="class or interface in java.io">PrintStream</a>&nbsp;out)</code>&nbsp;</td>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.ha.HAAdmin</h3>
<code>checkManualStateManagementOK, checkParameterValidity, confirmForceManual, createReqInfo, getAllServiceState, getRequestSource, getServiceAddr, gracefulFailoverThroughZKFCs, help, help, parseOpts, parseOpts, printUsage, printUsage, printUsage, printUsage, run, setRequestSource</code></li>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.conf.Configured</h3>
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<h3>Methods inherited from interface&nbsp;org.apache.hadoop.conf.Configurable</h3>
<code>getConf</code></li>
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<h4>DFSHAAdmin</h4>
<pre>public&nbsp;DFSHAAdmin()</pre>
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<h4>setErrOut</h4>
<pre>protected&nbsp;void&nbsp;setErrOut(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html?is-external=true" title="class or interface in java.io">PrintStream</a>&nbsp;errOut)</pre>
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<h4>setOut</h4>
<pre>protected&nbsp;void&nbsp;setOut(<a href="https://docs.oracle.com/javase/8/docs/api/java/io/PrintStream.html?is-external=true" title="class or interface in java.io">PrintStream</a>&nbsp;out)</pre>
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<h4>setConf</h4>
<pre>public&nbsp;void&nbsp;setConf(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
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<dd><code>setConf</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.conf.Configurable</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>setConf</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.ha.HAAdmin</code></dd>
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<pre>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;addSecurityConfiguration(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
<div class="block">Add the requisite security principal settings to the given Configuration,
returning a copy.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - the original config</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a copy with the security settings added</dd>
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<h4>resolveTarget</h4>
<pre>protected&nbsp;org.apache.hadoop.ha.HAServiceTarget&nbsp;resolveTarget(<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;nnId)</pre>
<div class="block">Try to map the given namenode ID to its service address.</div>
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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;getUsageString()</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>getUsageString</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.ha.HAAdmin</code></dd>
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<pre>protected&nbsp;boolean&nbsp;checkParameterValidity(<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;argv)</pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>checkParameterValidity</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.ha.HAAdmin</code></dd>
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<h4>runCmd</h4>
<pre>protected&nbsp;int&nbsp;runCmd(<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;argv)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
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<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code>runCmd</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.ha.HAAdmin</code></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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<pre>protected&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Collection.html?is-external=true" title="class or interface in java.util">Collection</a>&lt;<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>&gt;&nbsp;getTargetIds(<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;namenodeToActivate)</pre>
<div class="block">returns the list of all namenode ids for the given configuration.</div>
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<dd><code>getTargetIds</code>&nbsp;in class&nbsp;<code>org.apache.hadoop.ha.HAAdmin</code></dd>
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<h4>main</h4>
<pre>public static&nbsp;void&nbsp;main(<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;argv)
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<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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