@Override
    public int hashCode() {
      final int prime = 31;
      int result = 1;
      result = prime * result + Arrays.hashCode(family);
      result = prime * result + Arrays.hashCode(qualifier);
      result = prime * result + Arrays.hashCode(rowKey);
      result = prime * result + Arrays.hashCode(table);
      return result;
    }
Used to identify a cell that will be incremented.
hbase-thrift/src/main/java/org/apache/hadoop/hbase/thrift/IncrementCoalescer.java