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<div class="subTitle">org.apache.hadoop.hbase</div>
<h2 title="Class HBaseConfiguration" class="title">Class HBaseConfiguration</h2>
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<li>org.apache.hadoop.conf.Configuration</li>
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<li>org.apache.hadoop.hbase.HBaseConfiguration</li>
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<dt>All Implemented Interfaces:</dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</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>,<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;&gt;, org.apache.hadoop.io.Writable</dd>
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<pre>@InterfaceAudience.Public
public class <a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.33">HBaseConfiguration</a>
extends org.apache.hadoop.conf.Configuration</pre>
<div class="block">Adds HBase configuration files to a Configuration</div>
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<h3>Nested classes/interfaces inherited from class&nbsp;org.apache.hadoop.conf.Configuration</h3>
<code>org.apache.hadoop.conf.Configuration.DeprecationDelta, org.apache.hadoop.conf.Configuration.IntegerRanges</code></li>
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<caption><span>Fields</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">Field and Description</th>
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<tr class="altColor">
<td class="colFirst"><code>private static org.slf4j.Logger</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#LOG">LOG</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#HBaseConfiguration--">HBaseConfiguration</a></span>()</code>&nbsp;</td>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t1" class="tableTab"><span><a href="javascript:show(1);">Static Methods</a></span><span class="tabEnd">&nbsp;</span></span><span id="t4" class="tableTab"><span><a href="javascript:show(8);">Concrete Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
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<td class="colFirst"><code>private static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#addDeprecatedKeys--">addDeprecatedKeys</a></span>()</code>
<div class="block">The hbase.ipc.server.reservoir.initial.max and hbase.ipc.server.reservoir.initial.buffer.size
were introduced in HBase2.0.0, while in HBase3.0.0 the two config keys will be replaced by
hbase.server.allocator.max.buffer.count and hbase.server.allocator.buffer.size.</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#addHbaseResources-org.apache.hadoop.conf.Configuration-">addHbaseResources</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>private static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#applyClusterKeyToConf-org.apache.hadoop.conf.Configuration-java.lang.String-">applyClusterKeyToConf</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<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;key)</code>
<div class="block">Apply the settings in the given key to the given configuration, this is used to communicate
with distant clusters</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code>private static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#checkDefaultsVersion-org.apache.hadoop.conf.Configuration-">checkDefaultsVersion</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf)</code>&nbsp;</td>
</tr>
<tr id="i4" class="altColor">
<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#create--">create</a></span>()</code>
<div class="block">Creates a Configuration with HBase resources</div>
</td>
</tr>
<tr id="i5" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#create-org.apache.hadoop.conf.Configuration-">create</a></span>(org.apache.hadoop.conf.Configuration&nbsp;that)</code>&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#createClusterConf-org.apache.hadoop.conf.Configuration-java.lang.String-">createClusterConf</a></span>(org.apache.hadoop.conf.Configuration&nbsp;baseConf,
<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;clusterKey)</code>
<div class="block">Generates a <code>Configuration</code> instance by applying the ZooKeeper cluster key to the base
Configuration.</div>
</td>
</tr>
<tr id="i7" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#createClusterConf-org.apache.hadoop.conf.Configuration-java.lang.String-java.lang.String-">createClusterConf</a></span>(org.apache.hadoop.conf.Configuration&nbsp;baseConf,
<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;clusterKey,
<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;overridePrefix)</code>
<div class="block">Generates a <code>Configuration</code> instance by applying property overrides prefixed by a cluster
profile key to the base Configuration.</div>
</td>
</tr>
<tr id="i8" 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/HBaseConfiguration.html#getPassword-org.apache.hadoop.conf.Configuration-java.lang.String-java.lang.String-">getPassword</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<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;alias,
<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;defPass)</code>
<div class="block">Get the password from the Configuration instance using the getPassword method if it exists.</div>
</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>static boolean</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#isShowConfInServlet--">isShowConfInServlet</a></span>()</code>
<div class="block">Returns whether to show HBase Configuration in servlet</div>
</td>
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<tr id="i10" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.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;args)</code>
<div class="block">For debugging.</div>
</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#merge-org.apache.hadoop.conf.Configuration-org.apache.hadoop.conf.Configuration-">merge</a></span>(org.apache.hadoop.conf.Configuration&nbsp;destConf,
org.apache.hadoop.conf.Configuration&nbsp;srcConf)</code>
<div class="block">Merge two configurations.</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#setWithPrefix-org.apache.hadoop.conf.Configuration-java.lang.String-java.lang.Iterable-">setWithPrefix</a></span>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<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;prefix,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</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>,<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;&gt;&nbsp;properties)</code>
<div class="block">Sets all the entries in the provided <code>Map&lt;String, String&gt;</code> as properties in the given
<code>Configuration</code>.</div>
</td>
</tr>
<tr id="i13" class="rowColor">
<td class="colFirst"><code>static org.apache.hadoop.conf.Configuration</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#subset-org.apache.hadoop.conf.Configuration-java.lang.String-">subset</a></span>(org.apache.hadoop.conf.Configuration&nbsp;srcConf,
<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;prefix)</code>
<div class="block">Returns a subset of the configuration properties, matching the given key prefix.</div>
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<h3>Methods inherited from class&nbsp;org.apache.hadoop.conf.Configuration</h3>
<code>addDefaultResource, addDeprecation, addDeprecation, addDeprecation, addDeprecation, addDeprecations, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addResource, addTags, clear, dumpConfiguration, dumpConfiguration, dumpDeprecatedKeys, get, get, getAllPropertiesByTag, getAllPropertiesByTags, getBoolean, getClass, getClass, getClassByName, getClassByNameOrNull, getClasses, getClassLoader, getConfResourceAsInputStream, getConfResourceAsReader, getDouble, getEnum, getFile, getFinalParameters, getFloat, getInstances, getInt, getInts, getLocalPath, getLong, getLongBytes, getPassword, getPasswordFromConfig, getPasswordFromCredentialProviders, getPattern, getPropertySources, getProps, getPropsWithPrefix, getRange, getRaw, getResource, getSocketAddr, getSocketAddr, getStorageSize, getStorageSize, getStringCollection, getStrings, getStrings, getTimeDuration, getTimeDuration, getTimeDuration, getTimeDuration, getTimeDurationHelper, getTimeDurations, getTrimmed, getTrimmed, getTrimmedStringCollection, getTrimmedStrings, getTrimmedStrings, getValByRegex, hasWarnedDeprecation, isDeprecated, isPropertyTag, iterator, onlyKeyExists, readFields, reloadConfiguration, reloadExistingConfigurations, set, set, setAllowNullValueProperties, setBoolean, setBooleanIfUnset, setClass, setClassLoader, setDeprecatedProperties, setDouble, setEnum, setFloat, setIfUnset, setInt, setLong, setPattern, setQuietMode, setRestrictSystemProperties, setRestrictSystemPropertiesDefault, setRestrictSystemProps, setSocketAddr, setStorageSize, setStrings, setTimeDuration, size, toString, unset, updateConnectAddr, updateConnectAddr, write, writeXml, writeXml, writeXml</code></li>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li>
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<code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#forEach-java.util.function.Consumer-" title="class or interface in java.lang">forEach</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true#spliterator--" title="class or interface in java.lang">spliterator</a></code></li>
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<h4>LOG</h4>
<pre>private static final&nbsp;org.slf4j.Logger <a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.34">LOG</a></pre>
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<h4>HBaseConfiguration</h4>
<pre>public&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.33">HBaseConfiguration</a>()</pre>
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<h4>checkDefaultsVersion</h4>
<pre>private static&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.40">checkDefaultsVersion</a>(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
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<h4>addDeprecatedKeys</h4>
<pre>private static&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.65">addDeprecatedKeys</a>()</pre>
<div class="block">The hbase.ipc.server.reservoir.initial.max and hbase.ipc.server.reservoir.initial.buffer.size
were introduced in HBase2.0.0, while in HBase3.0.0 the two config keys will be replaced by
hbase.server.allocator.max.buffer.count and hbase.server.allocator.buffer.size. Also the
hbase.ipc.server.reservoir.enabled will be replaced by hbase.server.allocator.pool.enabled.
Keep the three old config keys here for HBase2.x compatibility. <br>
HBASE-24667: This config hbase.regionserver.hostname.disable.master.reversedns will be replaced
by hbase.unsafe.regionserver.hostname.disable.master.reversedns. Keep the old config keys here
for backward compatibility. <br>
Note: Before Hadoop-3.3, we must call the addDeprecations method before creating the
Configuration object to work correctly. After this bug is fixed in hadoop-3.3, there will be no
order problem.</div>
<dl>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="https://issues.apache.org/jira/browse/HADOOP-15708">HADOOP-15708</a></dd>
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<pre>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.86">addHbaseResources</a>(org.apache.hadoop.conf.Configuration&nbsp;conf)</pre>
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<pre>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.98">create</a>()</pre>
<div class="block">Creates a Configuration with HBase resources</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a Configuration with HBase resources</dd>
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<pre>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.111">create</a>(org.apache.hadoop.conf.Configuration&nbsp;that)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>that</code> - Configuration to clone.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a Configuration created with the hbase-*.xml files plus the given configuration.</dd>
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<h4>merge</h4>
<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.122">merge</a>(org.apache.hadoop.conf.Configuration&nbsp;destConf,
org.apache.hadoop.conf.Configuration&nbsp;srcConf)</pre>
<div class="block">Merge two configurations.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>destConf</code> - the configuration that will be overwritten with items from the srcConf</dd>
<dd><code>srcConf</code> - the source configuration</dd>
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<pre>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.135">subset</a>(org.apache.hadoop.conf.Configuration&nbsp;srcConf,
<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;prefix)</pre>
<div class="block">Returns a subset of the configuration properties, matching the given key prefix. The prefix is
stripped from the return keys, ie. when calling with a prefix of "myprefix", the entry
"myprefix.key1 = value1" would be returned as "key1 = value1". If an entry's key matches the
prefix exactly ("myprefix = value2"), it will <strong>not</strong> be included in the results,
since it would show up as an entry with an empty key.</div>
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<pre>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.154">setWithPrefix</a>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<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;prefix,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Iterable.html?is-external=true" title="class or interface in java.lang">Iterable</a>&lt;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.Entry.html?is-external=true" title="class or interface in java.util">Map.Entry</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>,<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;&gt;&nbsp;properties)</pre>
<div class="block">Sets all the entries in the provided <code>Map&lt;String, String&gt;</code> as properties in the given
<code>Configuration</code>. Each property will have the specified prefix prepended, so that the
configuration entries are keyed by <code>prefix + entry.getKey()</code>.</div>
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<pre>public static&nbsp;boolean&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.162">isShowConfInServlet</a>()</pre>
<div class="block">Returns whether to show HBase Configuration in servlet</div>
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<pre>public static&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/HBaseConfiguration.html#line.186">getPassword</a>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<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;alias,
<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;defPass)
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">Get the password from the Configuration instance using the getPassword method if it exists. If
not, then fall back to the general get method for configuration elements.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration instance for accessing the passwords</dd>
<dd><code>alias</code> - the name of the password element</dd>
<dd><code>defPass</code> - the default password</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>String password or default password n</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>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.209">createClusterConf</a>(org.apache.hadoop.conf.Configuration&nbsp;baseConf,
<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;clusterKey)
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">Generates a <code>Configuration</code> instance by applying the ZooKeeper cluster key to the base
Configuration. Note that additional configuration properties may be needed for a remote
cluster, so it is preferable to use <a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#createClusterConf-org.apache.hadoop.conf.Configuration-java.lang.String-java.lang.String-"><code>createClusterConf(Configuration, String, String)</code></a>.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>baseConf</code> - the base configuration to use, containing prefixed override properties</dd>
<dd><code>clusterKey</code> - the ZooKeeper quorum cluster key to apply, or <code>null</code> if none</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the merged configuration with override properties and cluster key applied</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>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#createClusterConf-org.apache.hadoop.conf.Configuration-java.lang.String-java.lang.String-"><code>createClusterConf(Configuration, String, String)</code></a></dd>
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<pre>public static&nbsp;org.apache.hadoop.conf.Configuration&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.225">createClusterConf</a>(org.apache.hadoop.conf.Configuration&nbsp;baseConf,
<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;clusterKey,
<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;overridePrefix)
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">Generates a <code>Configuration</code> instance by applying property overrides prefixed by a cluster
profile key to the base Configuration. Override properties are extracted by the
<a href="../../../../org/apache/hadoop/hbase/HBaseConfiguration.html#subset-org.apache.hadoop.conf.Configuration-java.lang.String-"><code>subset(Configuration, String)</code></a> method, then the merged on top of the base Configuration
and returned.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>baseConf</code> - the base configuration to use, containing prefixed override properties</dd>
<dd><code>clusterKey</code> - the ZooKeeper quorum cluster key to apply, or <code>null</code> if none</dd>
<dd><code>overridePrefix</code> - the property key prefix to match for override properties, or <code>null</code>
if none</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the merged configuration with override properties and cluster key applied</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 static&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.245">applyClusterKeyToConf</a>(org.apache.hadoop.conf.Configuration&nbsp;conf,
<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;key)
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">Apply the settings in the given key to the given configuration, this is used to communicate
with distant clusters</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>conf</code> - configuration object to configure</dd>
<dd><code>key</code> - string that contains the 3 required configuratins</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>public static&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HBaseConfiguration.html#line.264">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)
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>
<div class="block">For debugging. Dump configurations to system output as xml format. Master and RS configurations
can also be dumped using http services. e.g. "curl http://master:16010/dump"</div>
<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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