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<h2 title="Class HDFSBlocksDistribution" class="title">Class HDFSBlocksDistribution</h2>
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<pre>@InterfaceAudience.Private
public class <a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.38">HDFSBlocksDistribution</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">Data structure to describe the distribution of HDFS blocks among hosts.
Adding erroneous data will be ignored silently.</div>
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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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<td class="colFirst"><code>static class&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a></span></code>
<div class="block">Stores the hostname and weight for that hostname.</div>
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<td class="colFirst"><code>static interface&nbsp;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.Visitor.html" title="interface in org.apache.hadoop.hbase">HDFSBlocksDistribution.Visitor</a></span></code>
<div class="block">Implementations 'visit' hostAndWeight.</div>
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<td class="colFirst"><code>private <a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</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="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#hostAndWeights">hostAndWeights</a></span></code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#uniqueBlocksTotalWeight">uniqueBlocksTotalWeight</a></span></code>&nbsp;</td>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#HDFSBlocksDistribution--">HDFSBlocksDistribution</a></span>()</code>
<div class="block">Constructor</div>
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<caption><span id="t0" class="activeTableTab"><span>All Methods</span><span class="tabEnd">&nbsp;</span></span><span id="t2" class="tableTab"><span><a href="javascript:show(2);">Instance 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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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#add-org.apache.hadoop.hbase.HDFSBlocksDistribution-">add</a></span>(<a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution</a>&nbsp;otherBlocksDistribution)</code>
<div class="block">This will add the distribution from input to this object</div>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#addHostAndBlockWeight-java.lang.String-long-long-">addHostAndBlockWeight</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;host,
long&nbsp;weight,
long&nbsp;weightForSsd)</code>
<div class="block">add some weight to a specific host</div>
</td>
</tr>
<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#addHostsAndBlockWeight-java.lang.String:A-long-">addHostsAndBlockWeight</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;hosts,
long&nbsp;weight)</code>
<div class="block">add some weight to a list of hosts, update the value of unique block weight</div>
</td>
</tr>
<tr id="i3" class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#addHostsAndBlockWeight-java.lang.String:A-long-org.apache.hadoop.fs.StorageType:A-">addHostsAndBlockWeight</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;hosts,
long&nbsp;weight,
org.apache.hadoop.fs.StorageType[]&nbsp;storageTypes)</code>
<div class="block">add some weight to a list of hosts, update the value of unique block weight</div>
</td>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>private void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#addUniqueWeight-long-">addUniqueWeight</a></span>(long&nbsp;weight)</code>
<div class="block">add some weight to the total unique weight</div>
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<tr id="i5" class="rowColor">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getBlockLocalityIndex-java.lang.String-">getBlockLocalityIndex</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;host)</code>&nbsp;</td>
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<tr id="i6" class="altColor">
<td class="colFirst"><code>float</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getBlockLocalityIndexForSsd-java.lang.String-">getBlockLocalityIndexForSsd</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;host)</code>&nbsp;</td>
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<tr id="i7" class="rowColor">
<td class="colFirst"><code>private long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getBlocksLocalityWeightInternal-java.lang.String-org.apache.hadoop.hbase.HDFSBlocksDistribution.Visitor-">getBlocksLocalityWeightInternal</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;host,
<a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.Visitor.html" title="interface in org.apache.hadoop.hbase">HDFSBlocksDistribution.Visitor</a>&nbsp;visitor)</code>&nbsp;</td>
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<tr id="i8" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getBlocksLocalWeight-java.lang.String-">getBlocksLocalWeight</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;host)</code>&nbsp;</td>
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<tr id="i9" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getBlocksLocalWithSsdWeight-java.lang.String-">getBlocksLocalWithSsdWeight</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;host)</code>&nbsp;</td>
</tr>
<tr id="i10" class="altColor">
<td class="colFirst"><code><a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</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="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getHostAndWeights--">getHostAndWeights</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i11" class="rowColor">
<td class="colFirst"><code><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;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getTopHosts--">getTopHosts</a></span>()</code>
<div class="block">return the sorted list of hosts in terms of their weights</div>
</td>
</tr>
<tr id="i12" class="altColor">
<td class="colFirst"><code><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a>[]</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getTopHostsWithWeights--">getTopHostsWithWeights</a></span>()</code>
<div class="block">return the sorted list of hosts in terms of their weights</div>
</td>
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<tr id="i13" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getUniqueBlocksTotalWeight--">getUniqueBlocksTotalWeight</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i14" class="altColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html#getWeight-java.lang.String-">getWeight</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;host)</code>
<div class="block">return the weight for a specific host, that will be the total bytes of all
blocks on the host</div>
</td>
</tr>
<tr id="i15" class="rowColor">
<td class="colFirst"><code><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/HDFSBlocksDistribution.html#toString--">toString</a></span>()</code>&nbsp;</td>
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<pre>private&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</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="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a>&gt; <a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.39">hostAndWeights</a></pre>
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<h4>uniqueBlocksTotalWeight</h4>
<pre>private&nbsp;long <a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.40">uniqueBlocksTotalWeight</a></pre>
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<h4>HDFSBlocksDistribution</h4>
<pre>public&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.118">HDFSBlocksDistribution</a>()</pre>
<div class="block">Constructor</div>
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<h4>toString</h4>
<pre>public&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/HDFSBlocksDistribution.html#line.126">toString</a>()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a></code>&nbsp;in class&nbsp;<code><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></code></dd>
<dt><span class="seeLabel">See Also:</span></dt>
<dd><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang"><code>Object.toString()</code></a></dd>
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<h4>addHostsAndBlockWeight</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.136">addHostsAndBlockWeight</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;hosts,
long&nbsp;weight)</pre>
<div class="block">add some weight to a list of hosts, update the value of unique block weight</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>hosts</code> - the list of the host</dd>
<dd><code>weight</code> - the weight</dd>
</dl>
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<h4>addHostsAndBlockWeight</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.145">addHostsAndBlockWeight</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;hosts,
long&nbsp;weight,
org.apache.hadoop.fs.StorageType[]&nbsp;storageTypes)</pre>
<div class="block">add some weight to a list of hosts, update the value of unique block weight</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>hosts</code> - the list of the host</dd>
<dd><code>weight</code> - the weight</dd>
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<pre>private&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.171">addUniqueWeight</a>(long&nbsp;weight)</pre>
<div class="block">add some weight to the total unique weight</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>weight</code> - the weight</dd>
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<pre>private&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.181">addHostAndBlockWeight</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;host,
long&nbsp;weight,
long&nbsp;weightForSsd)</pre>
<div class="block">add some weight to a specific host</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dd><code>weight</code> - the weight</dd>
<dd><code>weightForSsd</code> - the weight for ssd</dd>
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<h4>getHostAndWeights</h4>
<pre>public&nbsp;<a href="https://docs.oracle.com/javase/8/docs/api/java/util/Map.html?is-external=true" title="class or interface in java.util">Map</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="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a>&gt;&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.199">getHostAndWeights</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the hosts and their weights</dd>
</dl>
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</ul>
<a name="getWeight-java.lang.String-">
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<h4>getWeight</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.209">getWeight</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;host)</pre>
<div class="block">return the weight for a specific host, that will be the total bytes of all
blocks on the host</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the weight of the given host</dd>
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<pre>public&nbsp;long&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.223">getUniqueBlocksTotalWeight</a>()</pre>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the sum of all unique blocks' weight</dd>
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<pre>public&nbsp;float&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.238">getBlockLocalityIndex</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;host)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the locality index of the given host</dd>
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<pre>public&nbsp;float&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.251">getBlockLocalityIndexForSsd</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;host)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the locality index with ssd of the given host</dd>
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<h4>getBlocksLocalWeight</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.264">getBlocksLocalWeight</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;host)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the blocks local weight of the given host</dd>
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<h4>getBlocksLocalWithSsdWeight</h4>
<pre>public&nbsp;long&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.272">getBlocksLocalWithSsdWeight</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;host)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the blocks local with ssd weight of the given host</dd>
</dl>
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<pre>private&nbsp;long&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.280">getBlocksLocalityWeightInternal</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;host,
<a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.Visitor.html" title="interface in org.apache.hadoop.hbase">HDFSBlocksDistribution.Visitor</a>&nbsp;visitor)</pre>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>host</code> - the host name</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the locality index of the given host</dd>
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<pre>public&nbsp;void&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.305">add</a>(<a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution</a>&nbsp;otherBlocksDistribution)</pre>
<div class="block">This will add the distribution from input to this object</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>otherBlocksDistribution</code> - the other hdfs blocks distribution</dd>
</dl>
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<h4>getTopHosts</h4>
<pre>public&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/HDFSBlocksDistribution.html#line.319">getTopHosts</a>()</pre>
<div class="block">return the sorted list of hosts in terms of their weights</div>
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<pre>public&nbsp;<a href="../../../../org/apache/hadoop/hbase/HDFSBlocksDistribution.HostAndWeight.html" title="class in org.apache.hadoop.hbase">HDFSBlocksDistribution.HostAndWeight</a>[]&nbsp;<a href="../../../../src-html/org/apache/hadoop/hbase/HDFSBlocksDistribution.html#line.331">getTopHostsWithWeights</a>()</pre>
<div class="block">return the sorted list of hosts in terms of their weights</div>
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