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| <div class="sub-title"><span class="package-label-in-type">Package</span> <a href="package-summary.html">org.apache.storm.starter</a></div> |
| <h1 title="Class SkewedRollingTopWords" class="title">Class SkewedRollingTopWords</h1> |
| </div> |
| <div class="inheritance" title="Inheritance Tree"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">java.lang.Object</a> |
| <div class="inheritance"><a href="../topology/ConfigurableTopology.html" title="class in org.apache.storm.topology">org.apache.storm.topology.ConfigurableTopology</a> |
| <div class="inheritance">org.apache.storm.starter.SkewedRollingTopWords</div> |
| </div> |
| </div> |
| <section class="class-description" id="class-description"> |
| <hr> |
| <div class="type-signature"><span class="modifiers">public class </span><span class="element-name type-name-label">SkewedRollingTopWords</span> |
| <span class="extends-implements">extends <a href="../topology/ConfigurableTopology.html" title="class in org.apache.storm.topology">ConfigurableTopology</a></span></div> |
| <div class="block">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.</div> |
| </section> |
| <section class="summary"> |
| <ul class="summary-list"> |
| <!-- =========== FIELD SUMMARY =========== --> |
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| <section class="field-summary" id="field-summary"> |
| <h2>Field Summary</h2> |
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| <h3 id="fields-inherited-from-class-org.apache.storm.topology.ConfigurableTopology">Fields inherited from class org.apache.storm.topology.<a href="../topology/ConfigurableTopology.html" title="class in org.apache.storm.topology">ConfigurableTopology</a></h3> |
| <code><a href="../topology/ConfigurableTopology.html#conf">conf</a></code></div> |
| </section> |
| </li> |
| <!-- ========== METHOD SUMMARY =========== --> |
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| <section class="method-summary" id="method-summary"> |
| <h2>Method Summary</h2> |
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| <div class="table-header col-first">Modifier and Type</div> |
| <div class="table-header col-second">Method</div> |
| <div class="table-header col-last">Description</div> |
| <div class="col-first even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code>static void</code></div> |
| <div class="col-second even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"><code><a href="#main(java.lang.String%5B%5D)" class="member-name-link">main</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>[] args)</code></div> |
| <div class="col-last even-row-color method-summary-table method-summary-table-tab1 method-summary-table-tab4"> </div> |
| <div class="col-first odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code>protected int</code></div> |
| <div class="col-second odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"><code><a href="#run(java.lang.String%5B%5D)" class="member-name-link">run</a><wbr>(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>[] args)</code></div> |
| <div class="col-last odd-row-color method-summary-table method-summary-table-tab2 method-summary-table-tab4"> |
| <div class="block">Submits (runs) the topology.</div> |
| </div> |
| </div> |
| </div> |
| </div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-org.apache.storm.topology.ConfigurableTopology">Methods inherited from class org.apache.storm.topology.<a href="../topology/ConfigurableTopology.html" title="class in org.apache.storm.topology">ConfigurableTopology</a></h3> |
| <code><a href="../topology/ConfigurableTopology.html#getConf()">getConf</a>, <a href="../topology/ConfigurableTopology.html#loadConf(java.lang.String,org.apache.storm.Config)">loadConf</a>, <a href="../topology/ConfigurableTopology.html#start(org.apache.storm.topology.ConfigurableTopology,java.lang.String%5B%5D)">start</a>, <a href="../topology/ConfigurableTopology.html#submit(java.lang.String,org.apache.storm.Config,org.apache.storm.topology.TopologyBuilder)">submit</a>, <a href="../topology/ConfigurableTopology.html#submit(org.apache.storm.Config,org.apache.storm.topology.TopologyBuilder)">submit</a></code></div> |
| <div class="inherited-list"> |
| <h3 id="methods-inherited-from-class-java.lang.Object">Methods inherited from class java.lang.<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html" title="class or interface in java.lang" class="external-link">Object</a></h3> |
| <code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#clone()" title="class or interface in java.lang" class="external-link">clone</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#equals(java.lang.Object)" title="class or interface in java.lang" class="external-link">equals</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#finalize()" title="class or interface in java.lang" class="external-link">finalize</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#getClass()" title="class or interface in java.lang" class="external-link">getClass</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#hashCode()" title="class or interface in java.lang" class="external-link">hashCode</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notify()" title="class or interface in java.lang" class="external-link">notify</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#notifyAll()" title="class or interface in java.lang" class="external-link">notifyAll</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#toString()" title="class or interface in java.lang" class="external-link">toString</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait()" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long)" title="class or interface in java.lang" class="external-link">wait</a>, <a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Object.html#wait(long,int)" title="class or interface in java.lang" class="external-link">wait</a></code></div> |
| </section> |
| </li> |
| </ul> |
| </section> |
| <section class="details"> |
| <ul class="details-list"> |
| <!-- ============ METHOD DETAIL ========== --> |
| <li> |
| <section class="method-details" id="method-detail"> |
| <h2>Method Details</h2> |
| <ul class="member-list"> |
| <li> |
| <section class="detail" id="main(java.lang.String[])"> |
| <h3>main</h3> |
| <div class="member-signature"><span class="modifiers">public static</span> <span class="return-type">void</span> <span class="element-name">main</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>[] args)</span> |
| throws <span class="exceptions"><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Exception.html" title="class or interface in java.lang" class="external-link">Exception</a></span></div> |
| <dl class="notes"> |
| <dt>Throws:</dt> |
| <dd><code><a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/Exception.html" title="class or interface in java.lang" class="external-link">Exception</a></code></dd> |
| </dl> |
| </section> |
| </li> |
| <li> |
| <section class="detail" id="run(java.lang.String[])"> |
| <h3>run</h3> |
| <div class="member-signature"><span class="modifiers">protected</span> <span class="return-type">int</span> <span class="element-name">run</span><wbr><span class="parameters">(<a href="https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/String.html" title="class or interface in java.lang" class="external-link">String</a>[] args)</span></div> |
| <div class="block">Submits (runs) the topology. |
| |
| <p>Usage: "SkewedRollingTopWords [topology-name] [-local]" |
| |
| <p>By default, the topology is run locally under the name |
| "slidingWindowCounts". |
| |
| <p>Examples: |
| |
| <p>``` |
| # Runs in remote/cluster mode, with topology name "production-topology" |
| $ storm jar storm-starter-jar-with-dependencies.jar org.apache.storm.starter.SkewedRollingTopWords production-topology ```</div> |
| <dl class="notes"> |
| <dt>Specified by:</dt> |
| <dd><code><a href="../topology/ConfigurableTopology.html#run(java.lang.String%5B%5D)">run</a></code> in class <code><a href="../topology/ConfigurableTopology.html" title="class in org.apache.storm.topology">ConfigurableTopology</a></code></dd> |
| <dt>Parameters:</dt> |
| <dd><code>args</code> - First positional argument (optional) is topology name, second |
| positional argument (optional) defines whether to run the topology |
| locally ("-local") or remotely, i.e. on a real cluster</dd> |
| </dl> |
| </section> |
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