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<div class="subTitle">org.apache.hadoop.yarn.client</div>
<h2 title="Class RequestHedgingRMFailoverProxyProvider" class="title">Class RequestHedgingRMFailoverProxyProvider&lt;T&gt;</h2>
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<li><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html" title="class in org.apache.hadoop.yarn.client">org.apache.hadoop.yarn.client.ConfiguredRMFailoverProxyProvider</a>&lt;T&gt;</li>
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<li>org.apache.hadoop.yarn.client.RequestHedgingRMFailoverProxyProvider&lt;T&gt;</li>
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<dd><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>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/AutoCloseable.html?is-external=true" title="class or interface in java.lang">AutoCloseable</a>, org.apache.hadoop.io.retry.FailoverProxyProvider&lt;T&gt;, <a href="../../../../../org/apache/hadoop/yarn/client/RMFailoverProxyProvider.html" title="interface in org.apache.hadoop.yarn.client">RMFailoverProxyProvider</a>&lt;T&gt;</dd>
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<pre>public class <span class="typeNameLabel">RequestHedgingRMFailoverProxyProvider&lt;T&gt;</span>
extends <a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html" title="class in org.apache.hadoop.yarn.client">ConfiguredRMFailoverProxyProvider</a>&lt;T&gt;</pre>
<div class="block">A FailoverProxyProvider implementation that technically does not "failover"
per-se. It constructs a wrapper proxy that sends the request to ALL
underlying proxies simultaneously. Each proxy inside the wrapper proxy will
retry the corresponding target. It assumes the in an HA setup, there will be
only one Active, and the active should respond faster than any configured
standbys. Once it receives a response from any one of the configured proxies,
outstanding requests to other proxies are immediately cancelled.</div>
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<h3>Nested classes/interfaces inherited from interface&nbsp;org.apache.hadoop.io.retry.FailoverProxyProvider</h3>
<code>org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo&lt;T&gt;</code></li>
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<h3>Fields inherited from class&nbsp;org.apache.hadoop.yarn.client.<a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html" title="class in org.apache.hadoop.yarn.client">ConfiguredRMFailoverProxyProvider</a></h3>
<code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#conf">conf</a>, <a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#protocol">protocol</a>, <a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#rmProxy">rmProxy</a>, <a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#rmServiceIds">rmServiceIds</a></code></li>
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<td class="colOne"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html#RequestHedgingRMFailoverProxyProvider--">RequestHedgingRMFailoverProxyProvider</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>protected <a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html#createRetriableProxy--">createRetriableProxy</a></span>()</code>&nbsp;</td>
</tr>
<tr id="i1" class="rowColor">
<td class="colFirst"><code>org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html#getProxy--">getProxy</a></span>()</code>&nbsp;</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html#init-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.client.RMProxy-java.lang.Class-">init</a></span>(org.apache.hadoop.conf.Configuration&nbsp;configuration,
<a href="../../../../../org/apache/hadoop/yarn/client/RMProxy.html" title="class in org.apache.hadoop.yarn.client">RMProxy</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;&nbsp;rmProxy,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;&nbsp;protocol)</code>
<div class="block">Initialize internal data structures, invoked right after instantiation.</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html#performFailover-T-">performFailover</a></span>(<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&nbsp;currentProxy)</code>&nbsp;</td>
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<code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#close--">close</a>, <a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#getInterface--">getInterface</a>, <a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#getProxyInternal--">getProxyInternal</a></code></li>
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<h4>RequestHedgingRMFailoverProxyProvider</h4>
<pre>public&nbsp;RequestHedgingRMFailoverProxyProvider()</pre>
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<h4>init</h4>
<pre>public&nbsp;void&nbsp;init(org.apache.hadoop.conf.Configuration&nbsp;configuration,
<a href="../../../../../org/apache/hadoop/yarn/client/RMProxy.html" title="class in org.apache.hadoop.yarn.client">RMProxy</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;&nbsp;rmProxy,
<a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Class.html?is-external=true" title="class or interface in java.lang">Class</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;&nbsp;protocol)</pre>
<div class="block"><span class="descfrmTypeLabel">Description copied from interface:&nbsp;<code><a href="../../../../../org/apache/hadoop/yarn/client/RMFailoverProxyProvider.html#init-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.client.RMProxy-java.lang.Class-">RMFailoverProxyProvider</a></code></span></div>
<div class="block">Initialize internal data structures, invoked right after instantiation.</div>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code><a href="../../../../../org/apache/hadoop/yarn/client/RMFailoverProxyProvider.html#init-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.client.RMProxy-java.lang.Class-">init</a></code>&nbsp;in interface&nbsp;<code><a href="../../../../../org/apache/hadoop/yarn/client/RMFailoverProxyProvider.html" title="interface in org.apache.hadoop.yarn.client">RMFailoverProxyProvider</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#init-org.apache.hadoop.conf.Configuration-org.apache.hadoop.yarn.client.RMProxy-java.lang.Class-">init</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html" title="class in org.apache.hadoop.yarn.client">ConfiguredRMFailoverProxyProvider</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></dd>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>configuration</code> - Configuration to use</dd>
<dd><code>rmProxy</code> - The <a href="../../../../../org/apache/hadoop/yarn/client/RMProxy.html" title="class in org.apache.hadoop.yarn.client"><code>RMProxy</code></a> instance to use</dd>
<dd><code>protocol</code> - The communication protocol to use</dd>
</dl>
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<h4>createRetriableProxy</h4>
<pre>protected&nbsp;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&nbsp;createRetriableProxy()</pre>
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<h4>getProxy</h4>
<pre>public&nbsp;org.apache.hadoop.io.retry.FailoverProxyProvider.ProxyInfo&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;&nbsp;getProxy()</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>getProxy</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.io.retry.FailoverProxyProvider&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#getProxy--">getProxy</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html" title="class in org.apache.hadoop.yarn.client">ConfiguredRMFailoverProxyProvider</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></dd>
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<h4>performFailover</h4>
<pre>public&nbsp;void&nbsp;performFailover(<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&nbsp;currentProxy)</pre>
<dl>
<dt><span class="overrideSpecifyLabel">Specified by:</span></dt>
<dd><code>performFailover</code>&nbsp;in interface&nbsp;<code>org.apache.hadoop.io.retry.FailoverProxyProvider&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></dd>
<dt><span class="overrideSpecifyLabel">Overrides:</span></dt>
<dd><code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html#performFailover-T-">performFailover</a></code>&nbsp;in class&nbsp;<code><a href="../../../../../org/apache/hadoop/yarn/client/ConfiguredRMFailoverProxyProvider.html" title="class in org.apache.hadoop.yarn.client">ConfiguredRMFailoverProxyProvider</a>&lt;<a href="../../../../../org/apache/hadoop/yarn/client/RequestHedgingRMFailoverProxyProvider.html" title="type parameter in RequestHedgingRMFailoverProxyProvider">T</a>&gt;</code></dd>
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