Github user jacques-n commented on a diff in the pull request:
https://github.com/apache/drill/pull/443#discussion_r65015118
--- Diff:
contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/HBaseStoragePlugin.java
---
@@ -21,34 +21,36 @@
import java.util.Set;
import org.apache.calcite.schema.SchemaPlus;
-
import org.apache.drill.common.JSONOptions;
import org.apache.drill.exec.ops.OptimizerRulesContext;
import org.apache.drill.exec.server.DrillbitContext;
import org.apache.drill.exec.store.AbstractStoragePlugin;
import org.apache.drill.exec.store.SchemaConfig;
import org.apache.drill.exec.store.StoragePluginOptimizerRule;
+import org.apache.hadoop.conf.Configuration;
+import org.apache.hadoop.hbase.client.Connection;
import com.fasterxml.jackson.core.type.TypeReference;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.google.common.collect.ImmutableSet;
public class HBaseStoragePlugin extends AbstractStoragePlugin {
- static final org.slf4j.Logger logger =
org.slf4j.LoggerFactory.getLogger(HBaseStoragePlugin.class);
+ private static final HBaseConnectionManager hbaseConnectionManager =
HBaseConnectionManager.INSTANCE;
--- End diff --
Any reason you use static here as opposed to one per storage plugin
instance? I suppose this reduces overhead in the case of multiple plugin
instances to a single target but generally, I'd be inclined to just have an
instance per plugin.
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