ConvertJoinMapJoin#hasOuterJoin produce incorrect result

private boolean hasOuterJoin(JoinOperator joinOp) throws SemanticException {
    boolean hasOuter = false;
    for (JoinCondDesc joinCondDesc : joinOp.getConf().getConds()) {
      switch (joinCondDesc.getType()) {
        case JoinDesc.INNER_JOIN:
        case JoinDesc.LEFT_SEMI_JOIN:
        case JoinDesc.UNIQUE_JOIN:
          hasOuter = false;
          break;
        case JoinDesc.FULL_OUTER_JOIN:
        case JoinDesc.LEFT_OUTER_JOIN:
        case JoinDesc.RIGHT_OUTER_JOIN:
          hasOuter = true;
          break;
        default:
          throw new SemanticException("Unknown join type " + joinCondDesc.getType());
      }
    }
    return hasOuter;
  }