private void checkForConstraintException(Exception e, String msg) throws AlreadyExistsException {
    if (getConstraintException(e) != null) {
      LOG.error(msg, e);
      throw new AlreadyExistsException(msg);
    }
  }
This is a cleanup method which is used to rollback a active transaction
if the success flag is false and close the associated Query object. This method is used
internally and visible for testing purposes only
@param success Rollback the current active transaction if false
@param query Query object which needs to be closed
standalone-metastore/metastore-server/src/main/java/org/apache/hadoop/hive/metastore/ObjectStore.java