public RowSet getOperationNextRowSet(OperationHandle opHandle,
      FetchOrientation orientation, long maxRows) throws HiveSQLException {
    return getOperation(opHandle).getNextRowSet(orientation, maxRows);
  }
Cancel the running operation unless it is already in a terminal state
@param opHandle
@throws HiveSQLException
service/src/java/org/apache/hive/service/cli/operation/OperationManager.java