HBASE-19521 HBase mob compaction needs to check hfile version

Signed-off-by: tedyu <yuzhihong@gmail.com>

hbase-server/src/main/java/org/apache/hadoop/hbase/master/MasterRpcServices.java

@@ -54,6 +54,7 @@ import org.apache.hadoop.hbase.client.replication.ReplicationPeerConfigUtil;
 import org.apache.hadoop.hbase.coprocessor.MasterCoprocessor;
 import org.apache.hadoop.hbase.errorhandling.ForeignException;
 import org.apache.hadoop.hbase.exceptions.UnknownProtocolException;
+import org.apache.hadoop.hbase.io.hfile.HFile;
 import org.apache.hadoop.hbase.ipc.CoprocessorRpcUtils;
 import org.apache.hadoop.hbase.ipc.PriorityFunction;
 import org.apache.hadoop.hbase.ipc.QosPriority;
@@ -1626,6 +1627,7 @@ public class MasterRpcServices extends RSRpcServices
       TableName tableName = RegionInfo.getTable(regionName);
       // if the region is a mob region, do the mob file compaction.
       if (MobUtils.isMobRegionName(tableName, regionName)) {
+        checkHFileFormatVersionForMob();
         return compactMob(request, tableName);
       } else {
         return super.compactRegion(controller, request);
@@ -1635,6 +1637,20 @@ public class MasterRpcServices extends RSRpcServices
     }
   }
 
+  /**
+   * check configured hfile format version before to do compaction
+   * @throws IOException throw IOException
+   */
+  private void checkHFileFormatVersionForMob() throws IOException {
+    if (HFile.getFormatVersion(master.getConfiguration()) < HFile.MIN_FORMAT_VERSION_WITH_TAGS) {
+      LOG.error("A minimum HFile version of " + HFile.MIN_FORMAT_VERSION_WITH_TAGS
+          + " is required for MOB compaction. Compaction will not run.");
+      throw new IOException("A minimum HFile version of " + HFile.MIN_FORMAT_VERSION_WITH_TAGS
+          + " is required for MOB feature. Consider setting " + HFile.FORMAT_VERSION_KEY
+          + " accordingly.");
+    }
+  }
+
   @Override
   @QosPriority(priority=HConstants.ADMIN_QOS)
   public GetRegionInfoResponse getRegionInfo(final RpcController controller,