public static boolean matchingColumn(final Cell left, final byte[] fam, final byte[] qual) {
    return matchingFamily(left, fam) && matchingQualifier(left, qual);
  }
Finds if the qualifier part of the cell and the KV serialized byte[] are equal.
@return true if the qualifier matches, false otherwise
hbase-common/src/main/java/org/apache/hadoop/hbase/CellUtil.java