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<div class="subTitle">org.apache.hadoop.hbase.util</div>
<h2 title="Class RegionMover" class="title">Class RegionMover</h2>
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<li>org.apache.hadoop.hbase.util.RegionMover</li>
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<pre>@InterfaceAudience.Public
public class <a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.83">RegionMover</a>
extends <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html" title="class in org.apache.hadoop.hbase.util">AbstractHBaseTool</a>
implements <a href="https://docs.oracle.com/javase/8/docs/api/java/io/Closeable.html?is-external=true" title="class or interface in java.io">Closeable</a></pre>
<div class="block">Tool for loading/unloading regions to/from given regionserver This tool can be run from Command
line directly as a utility. Supports Ack/No Ack mode for loading/unloading operations.Ack mode
acknowledges if regions are online after movement while noAck mode is best effort mode that
improves performance but will still move on if region is stuck/not moved. Motivation behind noAck
mode being RS shutdown where even if a Region is stuck, upon shutdown master will move it
anyways. This can also be used by constructiong an Object using the builder and then calling
<a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#load--"><code>load()</code></a> or <a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#unload--"><code>unload()</code></a> methods for the desired operations.</div>
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<caption><span>Nested Classes</span><span class="tabEnd">&nbsp;</span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Class and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.RegionMoverBuilder.html" title="class in org.apache.hadoop.hbase.util">RegionMover.RegionMoverBuilder</a></span></code>
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<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.OptionsOrderComparator.html" title="class in org.apache.hadoop.hbase.util">AbstractHBaseTool.OptionsOrderComparator</a></code></li>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>private boolean</code></td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#DEFAULT_MOVE_RETRIES_MAX">DEFAULT_MOVE_RETRIES_MAX</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#DEFAULT_MOVE_WAIT_MAX">DEFAULT_MOVE_WAIT_MAX</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>static int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#DEFAULT_SERVERSTART_WAIT_MAX">DEFAULT_SERVERSTART_WAIT_MAX</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/util/RegionMover.html#excludeFile">excludeFile</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/util/RegionMover.html#filename">filename</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>
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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/util/RegionMover.html#loadUnload">loadUnload</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/util/RegionMover.html#LOG">LOG</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#maxthreads">maxthreads</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>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/util/RegionMover.html#MOVE_RETRIES_MAX_KEY">MOVE_RETRIES_MAX_KEY</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>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/util/RegionMover.html#MOVE_WAIT_MAX_KEY">MOVE_WAIT_MAX_KEY</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#port">port</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/master/RackManager.html" title="class in org.apache.hadoop.hbase.master">RackManager</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#rackManager">rackManager</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.RegionMoverBuilder.html" title="class in org.apache.hadoop.hbase.util">RegionMover.RegionMoverBuilder</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#rmbuilder">rmbuilder</a></span></code>&nbsp;</td>
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<tr class="altColor">
<td class="colFirst"><code>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/util/RegionMover.html#SERVERSTART_WAIT_MAX_KEY">SERVERSTART_WAIT_MAX_KEY</a></span></code>&nbsp;</td>
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<td class="colFirst"><code>private int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#timeout">timeout</a></span></code>&nbsp;</td>
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<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#cmdLineArgs">cmdLineArgs</a>, <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#conf">conf</a>, <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#EXIT_FAILURE">EXIT_FAILURE</a>, <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#EXIT_SUCCESS">EXIT_SUCCESS</a>, <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#LONG_HELP_OPTION">LONG_HELP_OPTION</a>, <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#options">options</a>, <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#SHORT_HELP_OPTION">SHORT_HELP_OPTION</a></code></li>
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<td class="colFirst"><code>private </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#RegionMover--">RegionMover</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>private </code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#RegionMover-org.apache.hadoop.hbase.util.RegionMover.RegionMoverBuilder-">RegionMover</a></span>(<a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.RegionMoverBuilder.html" title="class in org.apache.hadoop.hbase.util">RegionMover.RegionMoverBuilder</a>&nbsp;builder)</code>&nbsp;</td>
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<tr id="i0" class="altColor">
<td class="colFirst"><code>protected void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#addOptions--">addOptions</a></span>()</code>
<div class="block">Override this to add command-line options using <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#addOptWithArg-java.lang.String-java.lang.String-"><code>AbstractHBaseTool.addOptWithArg(java.lang.String, java.lang.String)</code></a>
and similar methods.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#close--">close</a></span>()</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#deleteFile-java.lang.String-">deleteFile</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;filename)</code>&nbsp;</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>protected int</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#doWork--">doWork</a></span>()</code>
<div class="block">The "main function" of the tool</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>(package private) <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="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#filterRSGroupServers-org.apache.hadoop.hbase.rsgroup.RSGroupInfo-java.util.Collection-">filterRSGroupServers</a></span>(<a href="../../../../../org/apache/hadoop/hbase/rsgroup/RSGroupInfo.html" title="class in org.apache.hadoop.hbase.rsgroup">RSGroupInfo</a>&nbsp;rsgroup,
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>private <a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/hbase/util/RegionMover.html#getTargetServer--">getTargetServer</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>private boolean</code></td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>private void</code></td>
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</td>
</tr>
<tr id="i8" class="altColor">
<td class="colFirst"><code>boolean</code></td>
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<td class="colFirst"><code>private void</code></td>
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<td class="colFirst"><code>protected void</code></td>
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<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/client/RegionInfo.html" title="interface in org.apache.hadoop.hbase.client">RegionInfo</a>&gt;</code></td>
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<dt><span class="returnLabel">Returns:</span></dt>
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<div class="block">Write the number of regions moved in the first line followed by regions moved in subsequent
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<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>private&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.642">deleteFile</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;filename)</pre>
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<pre>private&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</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;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.653">readServersFromFile</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;filename)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>filename</code> - The file should have 'host:port' per line</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>List of servers from the file in format 'hostname:port'.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>private&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.679">includeExcludeRegionServers</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;fileName,
<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&gt;&nbsp;regionServers,
boolean&nbsp;isInclude)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Designates or excludes the servername whose hostname and port portion matches the list given
in the file.
Example:<br>
If you want to designated RSs, suppose designatedFile has RS1, regionServers has RS1, RS2 and
RS3. When we call includeExcludeRegionServers(designatedFile, regionServers, true), RS2 and
RS3 are removed from regionServers list so that regions can move to only RS1.
If you want to exclude RSs, suppose excludeFile has RS1, regionServers has RS1, RS2 and RS3.
When we call includeExcludeRegionServers(excludeFile, servers, false), RS1 is removed from
regionServers list so that regions can move to only RS2 and RS3.</div>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>private&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.702">stripMaster</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&gt;&nbsp;regionServers)
throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre>
<div class="block">Exclude master from list of RSs to move regions to</div>
<dl>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd>
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<pre>private&nbsp;<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.712">stripServer</a>(<a href="https://docs.oracle.com/javase/8/docs/api/java/util/List.html?is-external=true" title="class or interface in java.util">List</a>&lt;<a href="../../../../../org/apache/hadoop/hbase/ServerName.html" title="class in org.apache.hadoop.hbase">ServerName</a>&gt;&nbsp;regionServers,
<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;hostname,
int&nbsp;port)</pre>
<div class="block">Remove the servername whose hostname and port portion matches from the passed array of servers.
Returns as side-effect the servername removed.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>server removed from list of Region Servers</dd>
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<div class="block">Override this to add command-line options using <a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#addOptWithArg-java.lang.String-java.lang.String-"><code>AbstractHBaseTool.addOptWithArg(java.lang.String, java.lang.String)</code></a>
and similar methods.</div>
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<dd><code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#addOptions--">addOptions</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html" title="class in org.apache.hadoop.hbase.util">AbstractHBaseTool</a></code></dd>
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<pre>protected&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.748">processOptions</a>(org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine&nbsp;cmd)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#processOptions-org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine-">AbstractHBaseTool</a></code></span></div>
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<dd><code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#processOptions-org.apache.hbase.thirdparty.org.apache.commons.cli.CommandLine-">processOptions</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html" title="class in org.apache.hadoop.hbase.util">AbstractHBaseTool</a></code></dd>
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<pre>protected&nbsp;int&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.773">doWork</a>()
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<div class="block"><span class="descfrmTypeLabel">Description copied from class:&nbsp;<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#doWork--">AbstractHBaseTool</a></code></span></div>
<div class="block">The "main function" of the tool</div>
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<dd><code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html#doWork--">doWork</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/hbase/util/AbstractHBaseTool.html" title="class in org.apache.hadoop.hbase.util">AbstractHBaseTool</a></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>public static&nbsp;void&nbsp;<a href="../../../../../src-html/org/apache/hadoop/hbase/util/RegionMover.html#line.790">main</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;args)</pre>
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