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<h2 title="Class SkewedRollingTopWords" class="title">Class SkewedRollingTopWords</h2>
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<pre>public class <span class="typeNameLabel">SkewedRollingTopWords</span>
extends <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre>
<div class="block"><p>This topology does a continuous computation of the top N words that the topology has seen in terms of cardinality. The top N computation is done in a completely scalable way, and a similar approach could be used to compute things like trending topics or trending images on Twitter. It takes an approach that assumes that some works will be much more common then other words, and uses partialKeyGrouping to better balance the skewed load.</p></div>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/starter/SkewedRollingTopWords.html#SkewedRollingTopWords-java.lang.String-">SkewedRollingTopWords</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;topologyName)</code>&nbsp;</td>
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<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/starter/SkewedRollingTopWords.html#main-java.lang.String:A-">main</a></span>(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;args)</code>
<div class="block">Submits (runs) the topology.</div>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../org/apache/storm/starter/SkewedRollingTopWords.html#runLocally--">runLocally</a></span>()</code>&nbsp;</td>
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<h4>SkewedRollingTopWords</h4>
<pre>public&nbsp;SkewedRollingTopWords(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>&nbsp;topologyName)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
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<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></code></dd>
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<h4>runLocally</h4>
<pre>public&nbsp;void&nbsp;runLocally()
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/InterruptedException.html?is-external=true" title="class or interface in java.lang">InterruptedException</a></pre>
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<pre>public&nbsp;void&nbsp;runRemotely()
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
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<pre>public static&nbsp;void&nbsp;main(<a href="http://docs.oracle.com/javase/7/docs/api/java/lang/String.html?is-external=true" title="class or interface in java.lang">String</a>[]&nbsp;args)
throws <a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></pre>
<div class="block"><p>Submits (runs) the topology.</p><p>Usage: &ldquo;RollingTopWords [topology-name] [local|remote]&rdquo;</p><p>By default, the topology is run locally under the name &ldquo;slidingWindowCounts&rdquo;.</p><p>Examples:</p>
<pre><code class="no-highlight"><br/># Runs in local mode (LocalCluster), with topology name &quot;slidingWindowCounts&quot;
$ storm jar storm-starter-jar-with-dependencies.jar org.apache.storm.starter.RollingTopWords
# Runs in local mode (LocalCluster), with topology name &quot;foobar&quot;
$ storm jar storm-starter-jar-with-dependencies.jar org.apache.storm.starter.RollingTopWords foobar
# Runs in local mode (LocalCluster), with topology name &quot;foobar&quot;
$ storm jar storm-starter-jar-with-dependencies.jar org.apache.storm.starter.RollingTopWords foobar local
# Runs in remote/cluster mode, with topology name &quot;production-topology&quot;
$ storm jar storm-starter-jar-with-dependencies.jar org.apache.storm.starter.RollingTopWords production-topology remote
</code></pre></div>
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<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>args</code> - First positional argument (optional) is topology name, second positional argument (optional) defines whether to run the topology locally (&ldquo;local&rdquo;) or remotely, i.e. on a real cluster (&ldquo;remote&rdquo;).</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="http://docs.oracle.com/javase/7/docs/api/java/lang/Exception.html?is-external=true" title="class or interface in java.lang">Exception</a></code></dd>
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