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| <h2 title="Interface PluginBootstrapLoader" class="title">Interface PluginBootstrapLoader</h2> |
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| <pre>public interface <span class="typeNameLabel">PluginBootstrapLoader</span></pre> |
| <div class="block">Generalized interface for bootstraping or upgrading the plugin persistent |
| store. Provides the list of bootstrap plugins, along with those to be |
| upgraded. Provides confirmation that the upgrade was performed to avoid |
| doing it again. |
| <p> |
| <b>Caveats:</b>: The upgrade mechanism is rather ad-hoc; it actually needs |
| a version number to be solid, but the persistent store does not currently |
| provide a version number. See DRILL-7613.</div> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/drill/exec/planner/logical/StoragePlugins.html" title="class in org.apache.drill.exec.planner.logical">StoragePlugins</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/store/PluginBootstrapLoader.html#bootstrapPlugins--">bootstrapPlugins</a></span>()</code> |
| <div class="block">Drill has detected that this is a new installation.</div> |
| </td> |
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| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/store/PluginBootstrapLoader.html#onUpgrade--">onUpgrade</a></span>()</code> |
| <div class="block">Drill successfully applied the plugin upgrades from |
| <a href="../../../../../org/apache/drill/exec/store/PluginBootstrapLoader.html#updatedPlugins--"><code>updatedPlugins()</code></a>.</div> |
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| <td class="colFirst"><code><a href="../../../../../org/apache/drill/exec/planner/logical/StoragePlugins.html" title="class in org.apache.drill.exec.planner.logical">StoragePlugins</a></code></td> |
| <td class="colLast"><code><span class="memberNameLink"><a href="../../../../../org/apache/drill/exec/store/PluginBootstrapLoader.html#updatedPlugins--">updatedPlugins</a></span>()</code> |
| <div class="block">Drill has detected that on restart, the persistent storage |
| plugin exists.</div> |
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| <pre><a href="../../../../../org/apache/drill/exec/planner/logical/StoragePlugins.html" title="class in org.apache.drill.exec.planner.logical">StoragePlugins</a> bootstrapPlugins() |
| throws <a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></pre> |
| <div class="block">Drill has detected that this is a new installation. Provide |
| the list of storage plugins (that is, names and configs) |
| to use to populate the storage plugin store.</div> |
| <dl> |
| <dt><span class="throwsLabel">Throws:</span></dt> |
| <dd><code><a href="https://docs.oracle.com/javase/8/docs/api/java/io/IOException.html?is-external=true" title="class or interface in java.io">IOException</a></code></dd> |
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| <pre><a href="../../../../../org/apache/drill/exec/planner/logical/StoragePlugins.html" title="class in org.apache.drill.exec.planner.logical">StoragePlugins</a> updatedPlugins()</pre> |
| <div class="block">Drill has detected that on restart, the persistent storage |
| plugin exists. Return any changes that should be applied. |
| <p> |
| Note: this functionality is crude, there is no version, all |
| Drillbits in a cluster will race to do the upgrade. |
| Caveat emptor. See DRILL-7613.</div> |
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| <pre>void onUpgrade()</pre> |
| <div class="block">Drill successfully applied the plugin upgrades from |
| <a href="../../../../../org/apache/drill/exec/store/PluginBootstrapLoader.html#updatedPlugins--"><code>updatedPlugins()</code></a>. Use this event to mark this |
| version as having been upgraded. (Again, this is crude and |
| may not actually work. See DRILL-7613.)</div> |
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