@SuppressWarnings("unchecked")
    private FetchOperator[] segmentsForSize(int segmentLen) {
      if (segments == null || segments.length < segmentLen) {
        FetchOperator[] newSegments = new FetchOperator[segmentLen];
        MutablePair<List<Object>, InspectableObject>[] newKeys = new MutablePair[segmentLen];
        if (segments != null) {
          System.arraycopy(segments, 0, newSegments, 0, segments.length);
          System.arraycopy(keys, 0, newKeys, 0, keys.length);
        }
        segments = newSegments;
        keys = newKeys;
      }
      return segments;
    }
Implements the getName function for the Node Interface.

@return the name of the operator
ql/src/java/org/apache/hadoop/hive/ql/exec/SMBMapJoinOperator.java