Github user ivakegg commented on a diff in the pull request:
https://github.com/apache/accumulo/pull/253#discussion_r129960558
--- Diff:
server/base/src/main/java/org/apache/accumulo/server/fs/PerTableVolumeChooser.java
---
@@ -18,61 +18,146 @@
import java.util.concurrent.ConcurrentHashMap;
-import org.apache.accumulo.core.client.impl.Table;
+import org.apache.accumulo.core.client.AccumuloException;
+import org.apache.accumulo.core.conf.AccumuloConfiguration;
import org.apache.accumulo.core.conf.Property;
import org.apache.accumulo.server.client.HdfsZooInstance;
import org.apache.accumulo.server.conf.ServerConfigurationFactory;
import org.apache.accumulo.server.conf.TableConfiguration;
+import org.apache.accumulo.start.classloader.vfs.AccumuloVFSClassLoader;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
/**
- * A {@link VolumeChooser} that delegates to another volume chooser based
on the presence of an experimental table property,
- * {@link Property#TABLE_VOLUME_CHOOSER}. If it isn't found, defaults back
to {@link RandomVolumeChooser}.
+ * A {@link VolumeChooser} that delegates to another volume chooser based
on other properties: table.custom.volume.chooser for tables, and
+ * general.custom.scoped.volume.chooser for scopes.
general.custor.{scope}.volume.chooser can override the system wide setting for
+ * general.custom.scoped.volume.chooser. At the this this was written, the
only known scope was "logger".
*/
public class PerTableVolumeChooser implements VolumeChooser {
-
- private final VolumeChooser fallbackVolumeChooser = new
RandomVolumeChooser();
+ private static final Logger log =
LoggerFactory.getLogger(PerTableVolumeChooser.class);
// TODO Add hint of expected size to construction, see ACCUMULO-3410
/* Track VolumeChooser instances so they can keep state. */
- private final ConcurrentHashMap<Table.ID,VolumeChooser>
tableSpecificChooser = new ConcurrentHashMap<>();
+ private final ConcurrentHashMap<String,VolumeChooser>
tableSpecificChooser = new ConcurrentHashMap<>();
--- End diff --
You will see that the same routine is used to add volume choosers into
those maps, so I had to use a common denominator for the class. String works
well. However if you insist that I use Table.ID here instead, then I will
denormalize the common method.
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