Github user jacques-n commented on a diff in the pull request:
https://github.com/apache/drill/pull/443#discussion_r57379100
--- Diff:
contrib/storage-hbase/src/main/java/org/apache/drill/exec/store/hbase/config/HBasePersistentStore.java
---
@@ -25,36 +25,40 @@
import java.util.Map.Entry;
import java.util.NoSuchElementException;
-import com.google.common.collect.Iterators;
import org.apache.drill.common.exceptions.DrillRuntimeException;
import org.apache.drill.exec.store.sys.BasePersistentStore;
import org.apache.drill.exec.store.sys.PersistentStoreConfig;
import org.apache.drill.exec.store.sys.PersistentStoreMode;
import org.apache.hadoop.hbase.client.Delete;
import org.apache.hadoop.hbase.client.Get;
-import org.apache.hadoop.hbase.client.HTableInterface;
import org.apache.hadoop.hbase.client.Put;
import org.apache.hadoop.hbase.client.Result;
import org.apache.hadoop.hbase.client.ResultScanner;
import org.apache.hadoop.hbase.client.Scan;
+import org.apache.hadoop.hbase.client.Table;
import org.apache.hadoop.hbase.util.Bytes;
+import com.google.common.collect.Iterators;
+
public class HBasePersistentStore<V> extends BasePersistentStore<V> {
--- End diff --
Yes. I've seen two recent patches where people are having to maintain this
code. However, I thought we basically tell people not to use it. (That HDFS +
ZK is our preferred paradigm.) That paradigm definitely outperforms HBase since
we don't have to hit the store as part of every query (since we have listeners).
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