paul-rogers commented on a change in pull request #1988: DRILL-7590: Refactor
plugin registry
URL: https://github.com/apache/drill/pull/1988#discussion_r384897297
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File path:
exec/java-exec/src/main/java/org/apache/drill/exec/store/PluginBootstrapLoader.java
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@@ -17,6 +17,22 @@
*/
package org.apache.drill.exec.store;
-public interface DistributedStorageEngine {
- public String getDfsName();
+import java.io.IOException;
+
+import org.apache.drill.exec.planner.logical.StoragePlugins;
+
+/**
+ * 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.
+ */
+public interface PluginBootstrapLoader {
+ StoragePlugins bootstrapPlugins() throws IOException;
Review comment:
I went back and forth. In the end, I decided that the loader should just
focus on reporting its own errors, then let the registry provide the user
exception context.
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