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<div class="subTitle">org.apache.hadoop.yarn.server.federation.policies.manager</div>
<h2 title="Interface FederationPolicyManager" class="title">Interface FederationPolicyManager</h2>
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<dt>All Known Implementing Classes:</dt>
<dd><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/AbstractPolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">AbstractPolicyManager</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/HashBroadcastPolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">HashBroadcastPolicyManager</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/HomePolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">HomePolicyManager</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/PriorityBroadcastPolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">PriorityBroadcastPolicyManager</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/RejectAllPolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">RejectAllPolicyManager</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/UniformBroadcastPolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">UniformBroadcastPolicyManager</a>, <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/WeightedLocalityPolicyManager.html" title="class in org.apache.hadoop.yarn.server.federation.policies.manager">WeightedLocalityPolicyManager</a></dd>
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<pre>public interface <span class="typeNameLabel">FederationPolicyManager</span></pre>
<div class="block">Implementors need to provide the ability to serliaze a policy and its
configuration as a <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/store/records/SubClusterPolicyConfiguration.html" title="class in org.apache.hadoop.yarn.server.federation.store.records"><code>SubClusterPolicyConfiguration</code></a>, as well as provide
(re)initialization mechanics for the underlying
<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy"><code>FederationAMRMProxyPolicy</code></a> and <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router"><code>FederationRouterPolicy</code></a>.
The serialization aspects are used by admin APIs or a policy engine to store
a serialized configuration in the <code>FederationStateStore</code>, while the
getters methods are used to obtain a propertly inizialized policy in the
<code>Router</code> and <code>AMRMProxy</code> respectively.
This interface by design binds together <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy"><code>FederationAMRMProxyPolicy</code></a> and
<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router"><code>FederationRouterPolicy</code></a> and provide lifecycle support for
serialization and deserialization, to reduce configuration mistakes
(combining incompatible policies).</div>
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<td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy">FederationAMRMProxyPolicy</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/FederationPolicyManager.html#getAMRMPolicy-org.apache.hadoop.yarn.server.federation.policies.FederationPolicyInitializationContext-org.apache.hadoop.yarn.server.federation.policies.amrmproxy.FederationAMRMProxyPolicy-">getAMRMPolicy</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/FederationPolicyInitializationContext.html" title="class in org.apache.hadoop.yarn.server.federation.policies">FederationPolicyInitializationContext</a>&nbsp;policyContext,
<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy">FederationAMRMProxyPolicy</a>&nbsp;oldInstance)</code>
<div class="block">If the current instance is compatible, this method returns the same
instance of <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy"><code>FederationAMRMProxyPolicy</code></a> reinitialized with the
current context, otherwise a new instance initialized with the current
context is provided.</div>
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<tr id="i1" 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/yarn/server/federation/policies/manager/FederationPolicyManager.html#getQueue--">getQueue</a></span>()</code>
<div class="block">This method returns the queue this policy is configured for.</div>
</td>
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<tr id="i2" class="altColor">
<td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router">FederationRouterPolicy</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/FederationPolicyManager.html#getRouterPolicy-org.apache.hadoop.yarn.server.federation.policies.FederationPolicyInitializationContext-org.apache.hadoop.yarn.server.federation.policies.router.FederationRouterPolicy-">getRouterPolicy</a></span>(<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/FederationPolicyInitializationContext.html" title="class in org.apache.hadoop.yarn.server.federation.policies">FederationPolicyInitializationContext</a>&nbsp;policyContext,
<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router">FederationRouterPolicy</a>&nbsp;oldInstance)</code>
<div class="block">If the current instance is compatible, this method returns the same
instance of <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router"><code>FederationRouterPolicy</code></a> reinitialized with the current
context, otherwise a new instance initialized with the current context is
provided.</div>
</td>
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<tr id="i3" class="rowColor">
<td class="colFirst"><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/store/records/SubClusterPolicyConfiguration.html" title="class in org.apache.hadoop.yarn.server.federation.store.records">SubClusterPolicyConfiguration</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/FederationPolicyManager.html#serializeConf--">serializeConf</a></span>()</code>
<div class="block">This method is invoked to derive a <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/store/records/SubClusterPolicyConfiguration.html" title="class in org.apache.hadoop.yarn.server.federation.store.records"><code>SubClusterPolicyConfiguration</code></a>.</div>
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<tr id="i4" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/manager/FederationPolicyManager.html#setQueue-java.lang.String-">setQueue</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;queue)</code>
<div class="block">This methods provides a setter for the queue this policy is specified for.</div>
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<h3>Method Detail</h3>
<a name="getAMRMPolicy-org.apache.hadoop.yarn.server.federation.policies.FederationPolicyInitializationContext-org.apache.hadoop.yarn.server.federation.policies.amrmproxy.FederationAMRMProxyPolicy-">
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<h4>getAMRMPolicy</h4>
<pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy">FederationAMRMProxyPolicy</a>&nbsp;getAMRMPolicy(<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/FederationPolicyInitializationContext.html" title="class in org.apache.hadoop.yarn.server.federation.policies">FederationPolicyInitializationContext</a>&nbsp;policyContext,
<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy">FederationAMRMProxyPolicy</a>&nbsp;oldInstance)
throws <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/exceptions/FederationPolicyInitializationException.html" title="class in org.apache.hadoop.yarn.server.federation.policies.exceptions">FederationPolicyInitializationException</a></pre>
<div class="block">If the current instance is compatible, this method returns the same
instance of <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy"><code>FederationAMRMProxyPolicy</code></a> reinitialized with the
current context, otherwise a new instance initialized with the current
context is provided. If the instance is compatible with the current class
the implementors should attempt to reinitalize (retaining state). To affect
a complete policy reset oldInstance should be null.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>policyContext</code> - the current context</dd>
<dd><code>oldInstance</code> - the existing (possibly null) instance.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an updated <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/amrmproxy/FederationAMRMProxyPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.amrmproxy"><code>FederationAMRMProxyPolicy</code></a>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/exceptions/FederationPolicyInitializationException.html" title="class in org.apache.hadoop.yarn.server.federation.policies.exceptions">FederationPolicyInitializationException</a></code> - if the initialization
cannot be completed properly. The oldInstance should be still
valid in case of failed initialization.</dd>
</dl>
</li>
</ul>
<a name="getRouterPolicy-org.apache.hadoop.yarn.server.federation.policies.FederationPolicyInitializationContext-org.apache.hadoop.yarn.server.federation.policies.router.FederationRouterPolicy-">
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<h4>getRouterPolicy</h4>
<pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router">FederationRouterPolicy</a>&nbsp;getRouterPolicy(<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/FederationPolicyInitializationContext.html" title="class in org.apache.hadoop.yarn.server.federation.policies">FederationPolicyInitializationContext</a>&nbsp;policyContext,
<a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router">FederationRouterPolicy</a>&nbsp;oldInstance)
throws <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/exceptions/FederationPolicyInitializationException.html" title="class in org.apache.hadoop.yarn.server.federation.policies.exceptions">FederationPolicyInitializationException</a></pre>
<div class="block">If the current instance is compatible, this method returns the same
instance of <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router"><code>FederationRouterPolicy</code></a> reinitialized with the current
context, otherwise a new instance initialized with the current context is
provided. If the instance is compatible with the current class the
implementors should attempt to reinitalize (retaining state). To affect a
complete policy reset oldInstance shoulb be set to null.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>policyContext</code> - the current context</dd>
<dd><code>oldInstance</code> - the existing (possibly null) instance.</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>an updated <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/router/FederationRouterPolicy.html" title="interface in org.apache.hadoop.yarn.server.federation.policies.router"><code>FederationRouterPolicy</code></a>.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/exceptions/FederationPolicyInitializationException.html" title="class in org.apache.hadoop.yarn.server.federation.policies.exceptions">FederationPolicyInitializationException</a></code> - if the initalization cannot
be completed properly. The oldInstance should be still valid in
case of failed initialization.</dd>
</dl>
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<a name="serializeConf--">
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<h4>serializeConf</h4>
<pre><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/store/records/SubClusterPolicyConfiguration.html" title="class in org.apache.hadoop.yarn.server.federation.store.records">SubClusterPolicyConfiguration</a>&nbsp;serializeConf()
throws <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/exceptions/FederationPolicyInitializationException.html" title="class in org.apache.hadoop.yarn.server.federation.policies.exceptions">FederationPolicyInitializationException</a></pre>
<div class="block">This method is invoked to derive a <a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/store/records/SubClusterPolicyConfiguration.html" title="class in org.apache.hadoop.yarn.server.federation.store.records"><code>SubClusterPolicyConfiguration</code></a>.
This is to be used when writing a policy object in the federation policy
store.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>a valid policy configuration representing this object
parametrization.</dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../../org/apache/hadoop/yarn/server/federation/policies/exceptions/FederationPolicyInitializationException.html" title="class in org.apache.hadoop.yarn.server.federation.policies.exceptions">FederationPolicyInitializationException</a></code> - if the current state cannot
be serialized properly</dd>
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<h4>getQueue</h4>
<pre><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;getQueue()</pre>
<div class="block">This method returns the queue this policy is configured for.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the name of the queue.</dd>
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<h4>setQueue</h4>
<pre>void&nbsp;setQueue(<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;queue)</pre>
<div class="block">This methods provides a setter for the queue this policy is specified for.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>queue</code> - the name of the queue.</dd>
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