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| <div class="subTitle"><span class="packageLabelInType">Package</span> <a href="package-summary.html">org.apache.heron.scheduler.kubernetes</a></div> |
| <h2 title="Class KubernetesScheduler" class="title">Class KubernetesScheduler</h2> |
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| <ul class="inheritance"> |
| <li>java.lang.Object</li> |
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| <ul class="inheritance"> |
| <li>org.apache.heron.scheduler.kubernetes.KubernetesScheduler</li> |
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| <dd><code>java.lang.AutoCloseable</code>, <code><a href="../../spi/scheduler/IScalable.html" title="interface in org.apache.heron.spi.scheduler">IScalable</a></code>, <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
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| <pre>public class <span class="typeNameLabel">KubernetesScheduler</span> |
| extends java.lang.Object |
| implements <a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a>, <a href="../../spi/scheduler/IScalable.html" title="interface in org.apache.heron.spi.scheduler">IScalable</a></pre> |
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| <th class="colFirst" scope="col">Constructor</th> |
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| </tr> |
| <tr class="altColor"> |
| <th class="colConstructorName" scope="row"><code><span class="memberNameLink"><a href="#%3Cinit%3E()">KubernetesScheduler</a></span>()</code></th> |
| <td class="colLast"> </td> |
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| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colSecond" scope="col">Method</th> |
| <th class="colLast" scope="col">Description</th> |
| </tr> |
| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>java.util.Set<<a href="../../spi/packing/PackingPlan.ContainerPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan.ContainerPlan</a>></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#addContainers(java.util.Set)">addContainers</a></span>​(java.util.Set<<a href="../../spi/packing/PackingPlan.ContainerPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan.ContainerPlan</a>> containersToAdd)</code></th> |
| <td class="colLast"> |
| <div class="block">Add containers for a scale-up event from an update command</div> |
| </td> |
| </tr> |
| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#close()">close</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">This is to for disposing or cleaning up any internal state accumulated by |
| the scheduler</div> |
| </td> |
| </tr> |
| <tr id="i2" class="altColor"> |
| <td class="colFirst"><code>protected <a href="KubernetesController.html" title="class in org.apache.heron.scheduler.kubernetes">KubernetesController</a></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getController()">getController</a></span>()</code></th> |
| <td class="colLast"> </td> |
| </tr> |
| <tr id="i3" class="rowColor"> |
| <td class="colFirst"><code>java.util.List<java.lang.String></code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#getJobLinks()">getJobLinks</a></span>()</code></th> |
| <td class="colLast"> |
| <div class="block">This method will be called after onScheduler |
| It is responsible to return links to topology's customized ui pages.</div> |
| </td> |
| </tr> |
| <tr id="i4" class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)">initialize</a></span>​(<a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a> config, |
| <a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a> runtime)</code></th> |
| <td class="colLast"> |
| <div class="block">This will initialize scheduler using config file.</div> |
| </td> |
| </tr> |
| <tr id="i5" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">onKill</a></span>​(<a href="../../proto/scheduler/Scheduler.KillTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.KillTopologyRequest</a> request)</code></th> |
| <td class="colLast"> |
| <div class="block">Called by SchedulerServer when it receives a http request to kill topology, |
| while the http request body would be the protobuf Scheduler.KillTopologyRequest.</div> |
| </td> |
| </tr> |
| <tr id="i6" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">onRestart</a></span>​(<a href="../../proto/scheduler/Scheduler.RestartTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.RestartTopologyRequest</a> request)</code></th> |
| <td class="colLast"> |
| <div class="block">Called by SchedulerServer when it receives a http request to restart topology, |
| while the http request body would be the protobuf Scheduler.RestartTopologyRequest.</div> |
| </td> |
| </tr> |
| <tr id="i7" class="rowColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onSchedule(org.apache.heron.spi.packing.PackingPlan)">onSchedule</a></span>​(<a href="../../spi/packing/PackingPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan</a> packing)</code></th> |
| <td class="colLast"> |
| <div class="block">This method will be called after initialize.</div> |
| </td> |
| </tr> |
| <tr id="i8" class="altColor"> |
| <td class="colFirst"><code>boolean</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">onUpdate</a></span>​(<a href="../../proto/scheduler/Scheduler.UpdateTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.UpdateTopologyRequest</a> request)</code></th> |
| <td class="colLast"> |
| <div class="block">Called by SchedulerServer when it receives a http request to update topology, |
| while the http request body would be the protobuf Scheduler.UpdateTopologyRequest.</div> |
| </td> |
| </tr> |
| <tr id="i9" class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <th class="colSecond" scope="row"><code><span class="memberNameLink"><a href="#removeContainers(java.util.Set)">removeContainers</a></span>​(java.util.Set<<a href="../../spi/packing/PackingPlan.ContainerPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan.ContainerPlan</a>> containersToRemove)</code></th> |
| <td class="colLast"> |
| <div class="block">Remove containers for a scale-down event from an update command</div> |
| </td> |
| </tr> |
| </table> |
| <ul class="blockList"> |
| <li class="blockList"><a id="methods.inherited.from.class.java.lang.Object"> |
| <!-- --> |
| </a> |
| <h3>Methods inherited from class java.lang.Object</h3> |
| <code>clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li> |
| </ul> |
| </li> |
| </ul> |
| </section> |
| </li> |
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| <h4>KubernetesScheduler</h4> |
| <pre>public KubernetesScheduler()</pre> |
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| </ul> |
| </section> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <h4>getController</h4> |
| <pre class="methodSignature">protected <a href="KubernetesController.html" title="class in org.apache.heron.scheduler.kubernetes">KubernetesController</a> getController()</pre> |
| </li> |
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| <a id="initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)"> |
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| <h4>initialize</h4> |
| <pre class="methodSignature">public void initialize​(<a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a> config, |
| <a href="../../spi/common/Config.html" title="class in org.apache.heron.spi.common">Config</a> runtime)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)">IScheduler</a></code></span></div> |
| <div class="block">This will initialize scheduler using config file. Will be called during start.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#initialize(org.apache.heron.spi.common.Config,org.apache.heron.spi.common.Config)">initialize</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="close()"> |
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| </a> |
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| <li class="blockList"> |
| <h4>close</h4> |
| <pre class="methodSignature">public void close()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#close()">IScheduler</a></code></span></div> |
| <div class="block">This is to for disposing or cleaning up any internal state accumulated by |
| the scheduler |
| <p> |
| Closes this stream and releases any system resources associated |
| with it. If the stream is already closed then invoking this |
| method has no effect.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code>close</code> in interface <code>java.lang.AutoCloseable</code></dd> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#close()">close</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onSchedule(org.apache.heron.spi.packing.PackingPlan)"> |
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| <h4>onSchedule</h4> |
| <pre class="methodSignature">public boolean onSchedule​(<a href="../../spi/packing/PackingPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan</a> packing)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#onSchedule(org.apache.heron.spi.packing.PackingPlan)">IScheduler</a></code></span></div> |
| <div class="block">This method will be called after initialize. |
| It is responsible for grabbing resource to launch executor and make sure they |
| get launched. |
| <p></div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#onSchedule(org.apache.heron.spi.packing.PackingPlan)">onSchedule</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>packing</code> - Initial mapping suggested by running packing algorithm.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="getJobLinks()"> |
| <!-- --> |
| </a> |
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| <h4>getJobLinks</h4> |
| <pre class="methodSignature">public java.util.List<java.lang.String> getJobLinks()</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#getJobLinks()">IScheduler</a></code></span></div> |
| <div class="block">This method will be called after onScheduler |
| It is responsible to return links to topology's customized ui pages. |
| Example: link to the Mesos Slave UI page displaying all scheduled containers</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#getJobLinks()">getJobLinks</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>the links if any customized page. It returns an empty list if no any links</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)"> |
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| <h4>onKill</h4> |
| <pre class="methodSignature">public boolean onKill​(<a href="../../proto/scheduler/Scheduler.KillTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.KillTopologyRequest</a> request)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">IScheduler</a></code></span></div> |
| <div class="block">Called by SchedulerServer when it receives a http request to kill topology, |
| while the http request body would be the protobuf Scheduler.KillTopologyRequest. |
| The SchedulerServer would parse the request body and feed with this method. |
| It would be invoked in the executors of SchedulerServer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#onKill(org.apache.heron.proto.scheduler.Scheduler.KillTopologyRequest)">onKill</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>request</code> - The KillTopologyRequest sent from local heron-cli</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the IScheduler kills the topology successfully. SchedulerServer would |
| send KillTopologyResponse correspondingly according to this method's return value.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)"> |
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| <h4>onRestart</h4> |
| <pre class="methodSignature">public boolean onRestart​(<a href="../../proto/scheduler/Scheduler.RestartTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.RestartTopologyRequest</a> request)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">IScheduler</a></code></span></div> |
| <div class="block">Called by SchedulerServer when it receives a http request to restart topology, |
| while the http request body would be the protobuf Scheduler.RestartTopologyRequest. |
| The SchedulerServer would parse the request body and feed with this method. |
| It would be invoked in the executors of SchedulerServer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#onRestart(org.apache.heron.proto.scheduler.Scheduler.RestartTopologyRequest)">onRestart</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>request</code> - The RestartTopologyRequest sent from local heron-cli</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the IScheduler restarts the topology successfully. SchedulerServer would |
| send RestartTopologyResponse correspondingly according to this method's return value.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)"> |
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| </a> |
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| <h4>onUpdate</h4> |
| <pre class="methodSignature">public boolean onUpdate​(<a href="../../proto/scheduler/Scheduler.UpdateTopologyRequest.html" title="class in org.apache.heron.proto.scheduler">Scheduler.UpdateTopologyRequest</a> request)</pre> |
| <div class="block"><span class="descfrmTypeLabel">Description copied from interface: <code><a href="../../spi/scheduler/IScheduler.html#onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">IScheduler</a></code></span></div> |
| <div class="block">Called by SchedulerServer when it receives a http request to update topology, |
| while the http request body would be the protobuf Scheduler.UpdateTopologyRequest. |
| The SchedulerServer would parse the request body and feed with this method. |
| It would be invoked in the executors of SchedulerServer.</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScheduler.html#onUpdate(org.apache.heron.proto.scheduler.Scheduler.UpdateTopologyRequest)">onUpdate</a></code> in interface <code><a href="../../spi/scheduler/IScheduler.html" title="interface in org.apache.heron.spi.scheduler">IScheduler</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>request</code> - The UpdateTopologyRequest sent from local heron-cli</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>true if the IScheduler updates the topology successfully. SchedulerServer would |
| send UpdateTopologyResponse correspondingly according to this method's return value.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="addContainers(java.util.Set)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>addContainers</h4> |
| <pre class="methodSignature">public java.util.Set<<a href="../../spi/packing/PackingPlan.ContainerPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan.ContainerPlan</a>> addContainers​(java.util.Set<<a href="../../spi/packing/PackingPlan.ContainerPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan.ContainerPlan</a>> containersToAdd)</pre> |
| <div class="block">Add containers for a scale-up event from an update command</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScalable.html#addContainers(java.util.Set)">addContainers</a></code> in interface <code><a href="../../spi/scheduler/IScalable.html" title="interface in org.apache.heron.spi.scheduler">IScalable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>containersToAdd</code> - the list of containers that need to be added |
| |
| NOTE: Due to the mechanics of Kubernetes pod creation, each container must be created on |
| a one-by-one basis. If one container out of many containers to be deployed failed, it will |
| leave the topology in a bad state. |
| |
| TODO (jrcrawfo) -- (https://github.com/apache/incubator-heron/issues/1981)</dd> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Set of added containers with real ids and resources from the scheduler</dd> |
| </dl> |
| </li> |
| </ul> |
| <a id="removeContainers(java.util.Set)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>removeContainers</h4> |
| <pre class="methodSignature">public void removeContainers​(java.util.Set<<a href="../../spi/packing/PackingPlan.ContainerPlan.html" title="class in org.apache.heron.spi.packing">PackingPlan.ContainerPlan</a>> containersToRemove)</pre> |
| <div class="block">Remove containers for a scale-down event from an update command</div> |
| <dl> |
| <dt><span class="overrideSpecifyLabel">Specified by:</span></dt> |
| <dd><code><a href="../../spi/scheduler/IScalable.html#removeContainers(java.util.Set)">removeContainers</a></code> in interface <code><a href="../../spi/scheduler/IScalable.html" title="interface in org.apache.heron.spi.scheduler">IScalable</a></code></dd> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>containersToRemove</code> - the list of containers that need to be removed |
| |
| NOTE: Due to the mechanics of Kubernetes pod removal, each container must be removed on |
| a one-by-one basis. If one container out of many containers to be removed failed, it will |
| leave the topology in a bad state. |
| |
| TODO (jrcrawfo) -- (https://github.com/apache/incubator-heron/issues/1981)</dd> |
| </dl> |
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