public final static int compareColumns(Cell left, byte[] right, int rfoffset, int rflength,
    int rqoffset, int rqlength) {
    int diff = compareFamilies(left, right, rfoffset, rflength);
    if (diff != 0) return diff;
    return compareQualifiers(left, right, rqoffset, rqlength);
  }
Compares the cell's column (family and qualifier) with the given byte[]
@param left     the cell for which the column has to be compared
@param right    the byte[] having the column
@param rfoffset the offset of the family
@param rflength the length of the family
@param rqoffset the offset of the qualifier
@param rqlength the length of the qualifier
@return greater than 0 if left cell's column is bigger than byte[], lesser than 0 if left
        cell's column is lesser than byte[] and 0 otherwise
hbase-common/src/main/java/org/apache/hadoop/hbase/CellUtil.java