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stasis/je-7.5.11/docs/java/com/sleepycat/je/util/DbVerifyLog.html
Greg Burd 1d088e4a23 initial import
2019-06-25 16:12:40 -04:00

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<h2 title="Class DbVerifyLog" class="title">Class DbVerifyLog</h2>
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<pre>public class <span class="typeNameLabel">DbVerifyLog</span>
extends java.lang.Object</pre>
<div class="block">Verifies the checksums in one or more log files.
<p>This class may be instantiated and used programmatically, or used as a
command line utility as described below.</p>
<pre>
usage: java { com.sleepycat.je.util.DbVerifyLog |
-jar je-&lt;version&gt;.jar DbVerifyLog }
[-h &lt;dir&gt;] # environment home directory
[-s &lt;file&gt;] # starting (minimum) file number
[-e &lt;file&gt;] # ending (one past the maximum) file number
[-d &lt;millis&gt;] # delay in ms between reads (default is zero)
[-V] # print JE version number"
</pre>
<p>All arguments are optional. The current directory is used if <code>-h</code>
is not specified. File numbers may be specified in hex (preceded by <code>0x</code>) or decimal format. For convenience when copy/pasting from other
output, LSN format (&lt;file&gt;/&lt;offset&gt;) is also allowed.</p></div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/util/DbVerifyLog.html#DbVerifyLog-com.sleepycat.je.Environment-">DbVerifyLog</a></span>(<a href="../../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;env)</code>
<div class="block">Creates a utility object for verifying the checksums in log files.</div>
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</tr>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/util/DbVerifyLog.html#DbVerifyLog-com.sleepycat.je.Environment-int-">DbVerifyLog</a></span>(<a href="../../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;env,
int&nbsp;readBufferSize)</code>
<div class="block">Creates a utility object for verifying log files.</div>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/util/DbVerifyLog.html#main-java.lang.String:A-">main</a></span>(java.lang.String[]&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="../../../../com/sleepycat/je/util/DbVerifyLog.html#setReadDelay-long-java.util.concurrent.TimeUnit-">setReadDelay</a></span>(long&nbsp;delay,
java.util.concurrent.TimeUnit&nbsp;unit)</code>
<div class="block">Configures the delay between file reads during verification.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/util/DbVerifyLog.html#verify-long-long-">verify</a></span>(long&nbsp;startFile,
long&nbsp;endFile)</code>
<div class="block">Verifies the given range of log files in the environment.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../com/sleepycat/je/util/DbVerifyLog.html#verifyAll--">verifyAll</a></span>()</code>
<div class="block">Verifies all log files in the environment.</div>
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<h4>DbVerifyLog</h4>
<pre>public&nbsp;DbVerifyLog(<a href="../../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;env)</pre>
<div class="block">Creates a utility object for verifying the checksums in log files.
<p>The read buffer size is <a href="../../../../com/sleepycat/je/EnvironmentConfig.html#LOG_ITERATOR_READ_SIZE"><code>EnvironmentConfig.LOG_ITERATOR_READ_SIZE</code></a>.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>env</code> - the <code>Environment</code> associated with the log.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.</dd>
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<h4>DbVerifyLog</h4>
<pre>public&nbsp;DbVerifyLog(<a href="../../../../com/sleepycat/je/Environment.html" title="class in com.sleepycat.je">Environment</a>&nbsp;env,
int&nbsp;readBufferSize)</pre>
<div class="block">Creates a utility object for verifying log files.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>env</code> - the <code>Environment</code> associated with the log.</dd>
<dd><code>readBufferSize</code> - is the buffer size to use. If a value less than
or equal to zero is specified, <a href="../../../../com/sleepycat/je/EnvironmentConfig.html#LOG_ITERATOR_READ_SIZE"><code>EnvironmentConfig.LOG_ITERATOR_READ_SIZE</code></a> is used.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.</dd>
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<h4>verifyAll</h4>
<pre>public&nbsp;void&nbsp;verifyAll()
throws <a href="../../../../com/sleepycat/je/util/LogVerificationException.html" title="class in com.sleepycat.je.util">LogVerificationException</a>,
java.io.IOException</pre>
<div class="block">Verifies all log files in the environment.</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../com/sleepycat/je/util/LogVerificationException.html" title="class in com.sleepycat.je.util">LogVerificationException</a></code> - if a checksum cannot be verified or a
log entry is determined to be invalid by examining its contents.</dd>
<dd><code>java.io.IOException</code> - if an IOException occurs while reading a log file.</dd>
<dd><code><a href="../../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.</dd>
</dl>
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<h4>verify</h4>
<pre>public&nbsp;void&nbsp;verify(long&nbsp;startFile,
long&nbsp;endFile)
throws <a href="../../../../com/sleepycat/je/util/LogVerificationException.html" title="class in com.sleepycat.je.util">LogVerificationException</a>,
java.io.IOException</pre>
<div class="block">Verifies the given range of log files in the environment.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>startFile</code> - is the lowest numbered log file to be verified.</dd>
<dd><code>endFile</code> - is one greater than the highest numbered log file to be
verified.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../com/sleepycat/je/util/LogVerificationException.html" title="class in com.sleepycat.je.util">LogVerificationException</a></code> - if a checksum cannot be verified or a
log entry is determined to be invalid by examining its contents.</dd>
<dd><code>java.io.IOException</code> - if an IOException occurs while reading a log file.</dd>
<dd><code><a href="../../../../com/sleepycat/je/EnvironmentFailureException.html" title="class in com.sleepycat.je">EnvironmentFailureException</a></code> - if an unexpected, internal or
environment-wide failure occurs.</dd>
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<h4>main</h4>
<pre>public static&nbsp;void&nbsp;main(java.lang.String[]&nbsp;argv)</pre>
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<h4>setReadDelay</h4>
<pre>public&nbsp;void&nbsp;setReadDelay(long&nbsp;delay,
java.util.concurrent.TimeUnit&nbsp;unit)</pre>
<div class="block">Configures the delay between file reads during verification. A delay
between reads is needed to allow other JE components, such as HA, to
make timely progress.
<p>By default there is no read delay (it is zero).</p>
<p>Note that when using the <a href="../../../../com/sleepycat/je/EnvironmentConfig.html#ENV_RUN_VERIFIER"><code>background data verifier</code></a>, the delay between reads is
<a href="../../../../com/sleepycat/je/EnvironmentConfig.html#VERIFY_LOG_READ_DELAY"><code>EnvironmentConfig.VERIFY_LOG_READ_DELAY</code></a>.</p></div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>delay</code> - the delay between reads or zero for no delay.</dd>
<dd><code>unit</code> - the <code>TimeUnit</code> of the delay value. May be
null only if delay is zero.</dd>
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