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<div class="subTitle">org.apache.hadoop.hbase</div>
<h2 title="Class HealthChecker" class="title">Class HealthChecker</h2>
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<pre>class <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.34">HealthChecker</a>
extends <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></pre>
<div class="block">A utility for executing an external script that checks the health of
the node. An example script can be found at
<tt>src/main/sh/healthcheck/healthcheck.sh</tt> in the
<tt>hbase-examples</tt> module.</div>
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<td class="colFirst"><code>(package private) static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HealthChecker.HealthCheckerExitStatus.html" title="enum in org.apache.hadoop.hbase">HealthChecker.HealthCheckerExitStatus</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private static <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/hbase/HealthChecker.html#ERROR_PATTERN">ERROR_PATTERN</a></span></code>
<div class="block">Pattern used for searching in the output of the node health script</div>
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<td class="colFirst"><code>private <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/hbase/HealthChecker.html#exceptionStackTrace">exceptionStackTrace</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private <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/hbase/HealthChecker.html#healthCheckScript">healthCheckScript</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HealthChecker.html#LOG">LOG</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private long</code></td>
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<td class="colFirst"><code>private org.apache.hadoop.util.Shell.ShellCommandExecutor</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HealthChecker.html#shexec">shexec</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HealthChecker.html#HealthChecker--">HealthChecker</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code><a href="../../../../org/apache/hadoop/hbase/HealthReport.html" title="class in org.apache.hadoop.hbase">HealthReport</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HealthChecker.html#checkHealth--">checkHealth</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>private <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/hbase/HealthChecker.html#getHealthReport-org.apache.hadoop.hbase.HealthChecker.HealthCheckerExitStatus-">getHealthReport</a></span>(<a href="../../../../org/apache/hadoop/hbase/HealthChecker.HealthCheckerExitStatus.html" title="enum in org.apache.hadoop.hbase">HealthChecker.HealthCheckerExitStatus</a>&nbsp;status)</code>&nbsp;</td>
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<td class="colFirst"><code>private boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HealthChecker.html#hasErrors-java.lang.String-">hasErrors</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;output)</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/hbase/HealthChecker.html#init-java.lang.String-long-">init</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;location,
long&nbsp;timeout)</code>
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<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.36">LOG</a></pre>
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<pre>private&nbsp;org.apache.hadoop.util.Shell.ShellCommandExecutor <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.37">shexec</a></pre>
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<pre>private&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> <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.38">exceptionStackTrace</a></pre>
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<pre>private static final&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> <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.41">ERROR_PATTERN</a></pre>
<div class="block">Pattern used for searching in the output of the node health script</div>
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<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../constant-values.html#org.apache.hadoop.hbase.HealthChecker.ERROR_PATTERN">Constant Field Values</a></dd>
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<pre>private&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> <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.43">healthCheckScript</a></pre>
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<pre>private&nbsp;long <a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.44">scriptTimeout</a></pre>
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<pre><a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.34">HealthChecker</a>()</pre>
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<pre>public&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.60">init</a>(<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;location,
long&nbsp;timeout)</pre>
<div class="block">Initialize.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>location</code> - the location of the health script</dd>
<dd><code>timeout</code> - the timeout to be used for the health script</dd>
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<pre>public&nbsp;<a href="../../../../org/apache/hadoop/hbase/HealthReport.html" title="class in org.apache.hadoop.hbase">HealthReport</a>&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.71">checkHealth</a>()</pre>
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<pre>private&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;<a href="../../../../src-html/org/apache/hadoop/hbase/HealthChecker.html#line.107">getHealthReport</a>(<a href="../../../../org/apache/hadoop/hbase/HealthChecker.HealthCheckerExitStatus.html" title="enum in org.apache.hadoop.hbase">HealthChecker.HealthCheckerExitStatus</a>&nbsp;status)</pre>
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