private String getParentPath(String poolPath, String defValue) {
    int idx = poolPath.lastIndexOf('.');
    if (idx == -1) {
      return defValue;
    }
    return poolPath.substring(0, idx);
  }
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