Apache9 commented on a change in pull request #3665:
URL: https://github.com/apache/hbase/pull/3665#discussion_r707835558
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File path:
hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/storefiletracker/StoreFileTrackerFactory.java
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@@ -33,22 +36,82 @@
/**
* Factory method for creating store file tracker.
+ * <p/>
+ * The current implementations are:
+ * <ul>
+ * <li><em>default</em>: DefaultStoreFileTracker, see {@link
DefaultStoreFileTracker}.</li>
+ * <li><em>file</em>:FileBasedStoreFileTracker, see {@link
FileBasedStoreFileTracker}.</li>
+ * <li><em>migration</em>:MigrationStoreFileTracker, see {@link
MigrationStoreFileTracker}.</li>
+ * </ul>
+ * @see DefaultStoreFileTracker
+ * @see FileBasedStoreFileTracker
+ * @see MigrationStoreFileTracker
*/
[email protected] public final class StoreFileTrackerFactory {
- public static final String TRACK_IMPL = "hbase.store.file-tracker.impl";
[email protected]
+public final class StoreFileTrackerFactory {
+
private static final Logger LOG =
LoggerFactory.getLogger(StoreFileTrackerFactory.class);
- public static Class<? extends StoreFileTracker>
getStoreFileTrackerImpl(Configuration conf) {
- return conf.getClass(TRACK_IMPL, DefaultStoreFileTracker.class,
StoreFileTracker.class);
+ public static final String TRACKER_IMPL = "hbase.store.file-tracker.impl";
+
+ /**
+ * Maps between configuration names for trackers and implementation classes.
+ */
+ public enum Trackers {
+ DEFAULT(DefaultStoreFileTracker.class),
FILE(FileBasedStoreFileTracker.class),
+ MIGRATION(MigrationStoreFileTracker.class);
+
+ final Class<? extends StoreFileTracker> clazz;
+
+ private Trackers(Class<? extends StoreFileTracker> clazz) {
Review comment:
I think a enum can only have private constructors?
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