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<div class="subTitle">org.apache.hadoop.yarn.server.resourcemanager.reservation</div>
<h2 title="Interface SharingPolicy" class="title">Interface SharingPolicy</h2>
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<dd><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/CapacityOverTimePolicy.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">CapacityOverTimePolicy</a>, <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/NoOverCommitPolicy.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">NoOverCommitPolicy</a></dd>
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<pre>@InterfaceAudience.LimitedPrivate(value="yarn")
@InterfaceStability.Unstable
public interface <span class="typeNameLabel">SharingPolicy</span></pre>
<div class="block">This is the interface for policy that validate new
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAllocation.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>ReservationAllocation</code></a>s for allocations being added to a <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>Plan</code></a>.
Individual policies will be enforcing different invariants.</div>
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<h3>Method Summary</h3>
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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="t3" class="tableTab"><span><a href="javascript:show(4);">Abstract Methods</a></span><span class="tabEnd">&nbsp;</span></span></caption>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">RLESparseResourceAllocation</a></code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/SharingPolicy.html#availableResources-org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation-org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan-java.lang.String-org.apache.hadoop.yarn.api.records.ReservationId-long-long-">availableResources</a></span>(<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">RLESparseResourceAllocation</a>&nbsp;available,
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation">Plan</a>&nbsp;plan,
<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;user,
org.apache.hadoop.yarn.api.records.ReservationId&nbsp;oldId,
long&nbsp;start,
long&nbsp;end)</code>
<div class="block">This method provide a (partial) instantaneous validation by applying
business rules (such as max number of parallel containers allowed for a
user).</div>
</td>
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<tr id="i1" class="rowColor">
<td class="colFirst"><code>long</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/SharingPolicy.html#getValidWindow--">getValidWindow</a></span>()</code>
<div class="block">Returns the time range before and after the current reservation considered
by this policy.</div>
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<tr id="i2" class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/SharingPolicy.html#init-java.lang.String-org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationSchedulerConfiguration-">init</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;planQueuePath,
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationSchedulerConfiguration.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">ReservationSchedulerConfiguration</a>&nbsp;conf)</code>
<div class="block">Initialize this policy.</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/yarn/server/resourcemanager/reservation/SharingPolicy.html#validate-org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan-org.apache.hadoop.yarn.server.resourcemanager.reservation.ReservationAllocation-">validate</a></span>(<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation">Plan</a>&nbsp;plan,
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAllocation.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation">ReservationAllocation</a>&nbsp;newAllocation)</code>
<div class="block">This method runs the policy validation logic, and return true/false on
whether the <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAllocation.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>ReservationAllocation</code></a> is acceptable according to this
sharing policy.</div>
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<h3>Method Detail</h3>
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<h4>init</h4>
<pre>void&nbsp;init(<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;planQueuePath,
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationSchedulerConfiguration.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">ReservationSchedulerConfiguration</a>&nbsp;conf)</pre>
<div class="block">Initialize this policy.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>planQueuePath</code> - the name of the queue for this plan</dd>
<dd><code>conf</code> - the system configuration</dd>
</dl>
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<h4>validate</h4>
<pre>void&nbsp;validate(<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation">Plan</a>&nbsp;plan,
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAllocation.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation">ReservationAllocation</a>&nbsp;newAllocation)
throws <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/exceptions/PlanningException.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions">PlanningException</a></pre>
<div class="block">This method runs the policy validation logic, and return true/false on
whether the <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAllocation.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>ReservationAllocation</code></a> is acceptable according to this
sharing policy.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>plan</code> - the <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>Plan</code></a> we validate against</dd>
<dd><code>newAllocation</code> - the allocation proposed to be added to the
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>Plan</code></a></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/exceptions/PlanningException.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions">PlanningException</a></code> - if the policy is respected if we add this
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/ReservationAllocation.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>ReservationAllocation</code></a> to the <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>Plan</code></a></dd>
</dl>
</li>
</ul>
<a name="availableResources-org.apache.hadoop.yarn.server.resourcemanager.reservation.RLESparseResourceAllocation-org.apache.hadoop.yarn.server.resourcemanager.reservation.Plan-java.lang.String-org.apache.hadoop.yarn.api.records.ReservationId-long-long-">
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<h4>availableResources</h4>
<pre><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">RLESparseResourceAllocation</a>&nbsp;availableResources(<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation">RLESparseResourceAllocation</a>&nbsp;available,
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation">Plan</a>&nbsp;plan,
<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;user,
org.apache.hadoop.yarn.api.records.ReservationId&nbsp;oldId,
long&nbsp;start,
long&nbsp;end)
throws <a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/exceptions/PlanningException.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions">PlanningException</a></pre>
<div class="block">This method provide a (partial) instantaneous validation by applying
business rules (such as max number of parallel containers allowed for a
user). To provide the agent with more feedback the returned parameter is
expressed in number of containers that can be fit in this time according to
the business rules.</div>
<dl>
<dt><span class="paramLabel">Parameters:</span></dt>
<dd><code>available</code> - the amount of resources that would be offered if not
constrained by the policy</dd>
<dd><code>plan</code> - reference the the current Plan</dd>
<dd><code>user</code> - the username</dd>
<dd><code>start</code> - the start time for the range we are querying</dd>
<dd><code>end</code> - the end time for the range we are querying</dd>
<dd><code>oldId</code> - (optional) the id of a reservation being updated</dd>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>the available resources expressed as a
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/RLESparseResourceAllocation.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>RLESparseResourceAllocation</code></a></dd>
<dt><span class="throwsLabel">Throws:</span></dt>
<dd><code><a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/exceptions/PlanningException.html" title="class in org.apache.hadoop.yarn.server.resourcemanager.reservation.exceptions">PlanningException</a></code> - throws if the request is not valid</dd>
</dl>
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<h4>getValidWindow</h4>
<pre>long&nbsp;getValidWindow()</pre>
<div class="block">Returns the time range before and after the current reservation considered
by this policy. In particular, this informs the archival process for the
<a href="../../../../../../../org/apache/hadoop/yarn/server/resourcemanager/reservation/Plan.html" title="interface in org.apache.hadoop.yarn.server.resourcemanager.reservation"><code>Plan</code></a>, i.e., reservations regarding times before (now - validWindow)
can be deleted.</div>
<dl>
<dt><span class="returnLabel">Returns:</span></dt>
<dd>validWindow the window of validity considered by the policy.</dd>
</dl>
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