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| <div class="subTitle">org.apache.storm.scheduler.resource.strategies.scheduling</div> |
| <h2 title="Class DefaultResourceAwareStrategy" class="title">Class DefaultResourceAwareStrategy</h2> |
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| <li><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy</a></li> |
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| <ul class="inheritance"> |
| <li>org.apache.storm.scheduler.resource.strategies.scheduling.DefaultResourceAwareStrategy</li> |
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| <dd><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">IStrategy</a></dd> |
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| <pre>public class <span class="typeNameLabel">DefaultResourceAwareStrategy</span> |
| extends <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy</a> |
| implements <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">IStrategy</a></pre> |
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| <h3>Nested classes/interfaces inherited from class org.apache.storm.scheduler.resource.strategies.scheduling.<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy</a></h3> |
| <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.AllResources.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.AllResources</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.ExistingScheduleFunc.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.ExistingScheduleFunc</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.ObjectResources.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.ObjectResources</a></code></li> |
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| <h3>Fields inherited from class org.apache.storm.scheduler.resource.strategies.scheduling.<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy</a></h3> |
| <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#cluster">cluster</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#nodes">nodes</a></code></li> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/DefaultResourceAwareStrategy.html#DefaultResourceAwareStrategy--">DefaultResourceAwareStrategy</a></span>()</code> </td> |
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| <td class="colFirst"><code><a href="../../../../../../../org/apache/storm/scheduler/resource/SchedulingResult.html" title="class in org.apache.storm.scheduler.resource">SchedulingResult</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/DefaultResourceAwareStrategy.html#schedule-org.apache.storm.scheduler.Cluster-org.apache.storm.scheduler.TopologyDetails-">schedule</a></span>(<a href="../../../../../../../org/apache/storm/scheduler/Cluster.html" title="class in org.apache.storm.scheduler">Cluster</a> cluster, |
| <a href="../../../../../../../org/apache/storm/scheduler/TopologyDetails.html" title="class in org.apache.storm.scheduler">TopologyDetails</a> td)</code> |
| <div class="block">This method is invoked to calculate a scheduling for topology td.</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/TreeSet.html?is-external=true" title="class or interface in java.util">TreeSet</a><<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.ObjectResources.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.ObjectResources</a>></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/DefaultResourceAwareStrategy.html#sortObjectResources-org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy.AllResources-org.apache.storm.scheduler.ExecutorDetails-org.apache.storm.scheduler.TopologyDetails-org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy.ExistingScheduleFunc-">sortObjectResources</a></span>(<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.AllResources.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.AllResources</a> allResources, |
| <a href="../../../../../../../org/apache/storm/scheduler/ExecutorDetails.html" title="class in org.apache.storm.scheduler">ExecutorDetails</a> exec, |
| <a href="../../../../../../../org/apache/storm/scheduler/TopologyDetails.html" title="class in org.apache.storm.scheduler">TopologyDetails</a> topologyDetails, |
| <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.ExistingScheduleFunc.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.ExistingScheduleFunc</a> existingScheduleFunc)</code> |
| <div class="block">Sort objects by the following two criteria.</div> |
| </td> |
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| <h3>Methods inherited from class org.apache.storm.scheduler.resource.strategies.scheduling.<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy</a></h3> |
| <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#findWorkerForExec-org.apache.storm.scheduler.ExecutorDetails-org.apache.storm.scheduler.TopologyDetails-java.lang.Iterable-">findWorkerForExec</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#getSpouts-org.apache.storm.scheduler.TopologyDetails-">getSpouts</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#hostnameToNodes-java.lang.String-">hostnameToNodes</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#idToNode-java.lang.String-">idToNode</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#makeHostToNodeIds-java.util.List-">makeHostToNodeIds</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#mkNotEnoughResources-org.apache.storm.scheduler.TopologyDetails-">mkNotEnoughResources</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#nodeToRack-org.apache.storm.scheduler.resource.RasNode-">nodeToRack</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#orderExecutors-org.apache.storm.scheduler.TopologyDetails-java.util.Collection-">orderExecutors</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#prepare-java.util.Map-">prepare</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#scheduleExecutor-org.apache.storm.scheduler.ExecutorDetails-org.apache.storm.scheduler.TopologyDetails-java.util.Collection-java.lang.Iterable-">scheduleExecutor</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#sortAllNodes-org.apache.storm.scheduler.TopologyDetails-org.apache.storm.scheduler.ExecutorDetails-java.util.List-java.util.List-">sortAllNodes</a>, <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#sortNodes-java.util.List-org.apache.storm.scheduler.ExecutorDetails-org.apache.storm.scheduler.TopologyDetails-java.lang.String-java.util.Map-">sortNodes</a></code></li> |
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| <code><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#clone--" title="class or interface in java.lang">clone</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#equals-java.lang.Object-" title="class or interface in java.lang">equals</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#finalize--" title="class or interface in java.lang">finalize</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#getClass--" title="class or interface in java.lang">getClass</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#hashCode--" title="class or interface in java.lang">hashCode</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notify--" title="class or interface in java.lang">notify</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#notifyAll--" title="class or interface in java.lang">notifyAll</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#toString--" title="class or interface in java.lang">toString</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait--" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-" title="class or interface in java.lang">wait</a>, <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true#wait-long-int-" title="class or interface in java.lang">wait</a></code></li> |
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| </a> |
| <h3>Methods inherited from interface org.apache.storm.scheduler.resource.strategies.scheduling.<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">IStrategy</a></h3> |
| <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html#prepare-java.util.Map-">prepare</a></code></li> |
| </ul> |
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| <h3>Constructor Detail</h3> |
| <a name="DefaultResourceAwareStrategy--"> |
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| <h4>DefaultResourceAwareStrategy</h4> |
| <pre>public DefaultResourceAwareStrategy()</pre> |
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| <h3>Method Detail</h3> |
| <a name="schedule-org.apache.storm.scheduler.Cluster-org.apache.storm.scheduler.TopologyDetails-"> |
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| <h4>schedule</h4> |
| <pre>public <a href="../../../../../../../org/apache/storm/scheduler/resource/SchedulingResult.html" title="class in org.apache.storm.scheduler.resource">SchedulingResult</a> schedule(<a href="../../../../../../../org/apache/storm/scheduler/Cluster.html" title="class in org.apache.storm.scheduler">Cluster</a> cluster, |
| <a href="../../../../../../../org/apache/storm/scheduler/TopologyDetails.html" title="class in org.apache.storm.scheduler">TopologyDetails</a> td)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html#schedule-org.apache.storm.scheduler.Cluster-org.apache.storm.scheduler.TopologyDetails-">IStrategy</a></code></span></div> |
| <div class="block"><p>This method is invoked to calculate a scheduling for topology td. Cluster will reject any changes that are not for the given topology. Any changes made to the cluster will be committed if the scheduling is successful. <P></P> NOTE: scheduling occurs as a runnable in an interruptible thread. Scheduling should consider being interrupted if long running.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html#schedule-org.apache.storm.scheduler.Cluster-org.apache.storm.scheduler.TopologyDetails-">schedule</a></code> in interface <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/IStrategy.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">IStrategy</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>cluster</code> - the current state of the cluster</dd> |
| <dd><code>td</code> - the topology to schedule for</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>returns a SchedulingResult object containing SchedulingStatus object to indicate whether scheduling is successful.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="sortObjectResources-org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy.AllResources-org.apache.storm.scheduler.ExecutorDetails-org.apache.storm.scheduler.TopologyDetails-org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy.ExistingScheduleFunc-"> |
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| <h4>sortObjectResources</h4> |
| <pre>protected <a href="https://docs.oracle.com/javase/8/docs/api/java/util/TreeSet.html?is-external=true" title="class or interface in java.util">TreeSet</a><<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.ObjectResources.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.ObjectResources</a>> sortObjectResources(<a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.AllResources.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.AllResources</a> allResources, |
| <a href="../../../../../../../org/apache/storm/scheduler/ExecutorDetails.html" title="class in org.apache.storm.scheduler">ExecutorDetails</a> exec, |
| <a href="../../../../../../../org/apache/storm/scheduler/TopologyDetails.html" title="class in org.apache.storm.scheduler">TopologyDetails</a> topologyDetails, |
| <a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.ExistingScheduleFunc.html" title="interface in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy.ExistingScheduleFunc</a> existingScheduleFunc)</pre> |
| <div class="block"><p>Sort objects by the following two criteria. 1) the number executors of the topology that needs to be scheduled is already on the object (node or rack) in descending order. The reasoning to sort based on criterion 1 is so we schedule the rest of a topology on the same object (node or rack) as the existing executors of the topology. 2) the subordinate/subservient resource availability percentage of a rack in descending order We calculate the resource availability percentage by dividing the resource availability of the object (node or rack) by the resource availability of the entire rack or cluster depending on if object references a node or a rack. By doing this calculation, objects (node or rack) that have exhausted or little of one of the resources mentioned above will be ranked after racks that have more balanced resource availability. So we will be less likely to pick a rack that have a lot of one resource but a low amount of another.</p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html#sortObjectResources-org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy.AllResources-org.apache.storm.scheduler.ExecutorDetails-org.apache.storm.scheduler.TopologyDetails-org.apache.storm.scheduler.resource.strategies.scheduling.BaseResourceAwareStrategy.ExistingScheduleFunc-">sortObjectResources</a></code> in class <code><a href="../../../../../../../org/apache/storm/scheduler/resource/strategies/scheduling/BaseResourceAwareStrategy.html" title="class in org.apache.storm.scheduler.resource.strategies.scheduling">BaseResourceAwareStrategy</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>allResources</code> - contains all individual ObjectResources as well as cumulative stats</dd> |
| <dd><code>existingScheduleFunc</code> - a function to get existing executors already scheduled on this object</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>a sorted list of ObjectResources</dd> |
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