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| <div class="subTitle">org.apache.ignite.maintenance</div> |
| <h2 title="Class MaintenanceTask" class="title">Class MaintenanceTask</h2> |
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| <ul class="inheritance"> |
| <li><a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">java.lang.Object</a></li> |
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| <li>org.apache.ignite.maintenance.MaintenanceTask</li> |
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| <pre>public class <span class="typeNameLabel">MaintenanceTask</span> |
| extends <a href="https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></pre> |
| <div class="block">Represents request to handle maintenance situation. |
| |
| Maintenance request can be created programmatically |
| with <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html#registerMaintenanceTask-org.apache.ignite.maintenance.MaintenanceTask-"><code>MaintenanceRegistry.registerMaintenanceTask(MaintenanceTask)</code></a> public API call. |
| |
| Lifecycle of Maintenance Task is managed by <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceRegistry</code></a>. |
| |
| Task contains unique ID of maintenance situation (e.g. situation of PDS corruption or defragmentation), |
| description of task and optional parameters. |
| |
| When task is created node should be restarted to enter maintenance mode. |
| In that mode node can start actions needed to resolve maintenance situation or wait for user to trigger them. |
| |
| Components that may need to perform maintenance actions as part of their recovery workflow should check |
| maintenance status on startup and supply <a href="../../../../org/apache/ignite/maintenance/MaintenanceWorkflowCallback.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceWorkflowCallback</code></a> implementation to |
| <a href="../../../../org/apache/ignite/maintenance/MaintenanceRegistry.html#registerWorkflowCallback-java.lang.String-org.apache.ignite.maintenance.MaintenanceWorkflowCallback-"><code>MaintenanceRegistry.registerWorkflowCallback(String, MaintenanceWorkflowCallback)</code></a> to allow Maintenance Registry |
| to find maintenance actions and start them automatically or by user request. |
| |
| Matching between <a href="../../../../org/apache/ignite/maintenance/MaintenanceTask.html" title="class in org.apache.ignite.maintenance"><code>MaintenanceTask</code></a> and <a href="../../../../org/apache/ignite/maintenance/MaintenanceWorkflowCallback.html" title="interface in org.apache.ignite.maintenance"><code>MaintenanceWorkflowCallback</code></a> is performed based on |
| the name of maintenance task that should be unique among all registered tasks.</div> |
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| <td class="colOne"><code><span class="memberNameLink"><a href="../../../../org/apache/ignite/maintenance/MaintenanceTask.html#MaintenanceTask-java.lang.String-java.lang.String-java.lang.String-">MaintenanceTask</a></span>(@NotNull <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> name, |
| @NotNull <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> description, |
| @Nullable <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> params)</code> </td> |
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| <tr id="i0" class="altColor"> |
| <td class="colFirst"><code>@NotNull <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/ignite/maintenance/MaintenanceTask.html#description--">description</a></span>()</code> </td> |
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| <tr id="i1" class="rowColor"> |
| <td class="colFirst"><code>@NotNull <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/ignite/maintenance/MaintenanceTask.html#name--">name</a></span>()</code> </td> |
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| <td class="colFirst"><code>@Nullable <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/ignite/maintenance/MaintenanceTask.html#parameters--">parameters</a></span>()</code> </td> |
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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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| <h3>Constructor Detail</h3> |
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| <h4>MaintenanceTask</h4> |
| <pre>public MaintenanceTask(@NotNull |
| @NotNull <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> name, |
| @NotNull |
| @NotNull <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> description, |
| @Nullable |
| @Nullable <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> params)</pre> |
| <dl> |
| <dt><span class="paramLabel">Parameters:</span></dt> |
| <dd><code>name</code> - Mandatory name of maintenance task. Name should be unique among all other tasks.</dd> |
| <dd><code>description</code> - Mandatory description of maintenance situation.</dd> |
| <dd><code>params</code> - Optional parameters that may be needed to perform maintenance actions.</dd> |
| </dl> |
| </li> |
| </ul> |
| </li> |
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| <h4>name</h4> |
| <pre>@NotNull |
| public @NotNull <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> name()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Name of Maintenance Task unique among all registered tasks.</dd> |
| </dl> |
| </li> |
| </ul> |
| <a name="description--"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>description</h4> |
| <pre>@NotNull |
| public @NotNull <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> description()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Human-readable not-nullable description of the task.</dd> |
| </dl> |
| </li> |
| </ul> |
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| <!-- --> |
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| <h4>parameters</h4> |
| <pre>@Nullable |
| public @Nullable <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> parameters()</pre> |
| <dl> |
| <dt><span class="returnLabel">Returns:</span></dt> |
| <dd>Optional parameters that could be used by actions associated with this Maintenance Task.</dd> |
| </dl> |
| </li> |
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| <p class="legalCopy"><small><table width="100%" border="0" cellspacing=0 cellpadding=0 style="padding: 5px"> <tr> <td> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <a target=_blank href="https://ignite.apache.org"><nobr>2021 Copyright © Apache Software Foundation</nobr></a> </td> </tr> </tbody> </table> </td> <td width="100%" align="right" valign="center"> <a href="https://twitter.com/ApacheIgnite" class="twitter-follow-button" data-show-count="false" data-size="large">Follow @ApacheIgnite</a> </td> </tr> <tr> <td colspan="2" valign="top" align="left"> <table style="padding-left: 0; margin: 0"> <tbody style="padding: 0; margin: 0"> <tr style="padding: 0; margin: 0"> <td> <b>Ignite Database and Caching Platform</b> </td> <td>: ver. <strong>2.11.0</strong> </td> </tr> <tr style="padding: 0; margin: 0"> <td> <b>Release Date</b> </td> <td>: September 11 2021 </td> </tr> </tbody> </table> </td> </tr> </table></small></p> |
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