@Override
  public void onDropDatabase(DropDatabaseEvent db) throws MetaException {
    checkIpAddress();
  }
An implementation for MetaStoreEventListener which checks that the IP Address stored in
HMSHandler matches that of local host, for testing purposes.
standalone-metastore/metastore-server/src/test/java/org/apache/hadoop/hive/metastore/IpAddressListener.java