[hbase] Verify that the table exists during DB binding initialization

and bail out if not found.  If this is not checked here, the workload
will continue running and generating errors until it finishes.

hbase/src/main/java/com/yahoo/ycsb/db/HBaseClient.java

@@ -32,6 +32,7 @@ import java.util.*;
 import com.yahoo.ycsb.measurements.Measurements;
 import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.KeyValue;
+import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.client.HTable;
 //import org.apache.hadoop.hbase.client.Scanner;
 import org.apache.hadoop.hbase.client.Get;
@@ -99,6 +100,19 @@ public class HBaseClient extends com.yahoo.ycsb.DB
         }
       _columnFamilyBytes = Bytes.toBytes(_columnFamily);
 
+      // Terminate right now if table does not exist, since the client
+      // will not propagate this error upstream once the workload
+      // starts.
+      String table = com.yahoo.ycsb.workloads.CoreWorkload.table;
+      try
+	  {
+	      HTable ht = new HTable(config, table);
+	      HTableDescriptor dsc = ht.getTableDescriptor();
+	  }
+      catch (IOException e)
+	  {
+	      throw new DBException("Error accessing HBase table: " + table);
+	  }
     }
 
     /**

hbase/src/main/java/com/yahoo/ycsb/db/HBaseClient10.java

@@ -27,6 +27,7 @@ import org.apache.hadoop.conf.Configuration;
 import org.apache.hadoop.hbase.Cell;
 import org.apache.hadoop.hbase.CellUtil;
 import org.apache.hadoop.hbase.HBaseConfiguration;
+import org.apache.hadoop.hbase.HTableDescriptor;
 import org.apache.hadoop.hbase.KeyValue;
 import org.apache.hadoop.hbase.TableName;
 import org.apache.hadoop.hbase.client.BufferedMutator;
@@ -36,6 +37,7 @@ import org.apache.hadoop.hbase.client.ConnectionFactory;
 import org.apache.hadoop.hbase.client.Delete;
 import org.apache.hadoop.hbase.client.Durability;
 import org.apache.hadoop.hbase.client.Get;
+import org.apache.hadoop.hbase.client.HTable;
 import org.apache.hadoop.hbase.client.Put;
 import org.apache.hadoop.hbase.client.Result;
 import org.apache.hadoop.hbase.client.ResultScanner;
@@ -133,6 +135,20 @@ public class HBaseClient10 extends com.yahoo.ycsb.DB
             throw new DBException("No columnfamily specified");
         }
         _columnFamilyBytes = Bytes.toBytes(_columnFamily);
+
+      // Terminate right now if table does not exist, since the client
+      // will not propagate this error upstream once the workload
+      // starts.
+      String table = com.yahoo.ycsb.workloads.CoreWorkload.table;
+      try
+	  {
+	      HTable ht = new HTable(config, table);
+	      HTableDescriptor dsc = ht.getTableDescriptor();
+	  }
+      catch (IOException e)
+	  {
+	      throw new DBException("Error accessing HBase table: " + table);
+	  }
     }
 
     /**