calculate the record size of HBase issue

calculate the record size of HBase issue

The hbase table scan 'test' like this
010012010114200 column=s:STATION, timestamp=1378892292800,
value=00001
010012010114200 column=s:YEAR, timestamp=1378892292800, value=2010
010012010114210 column=s:DAY, timestamp=1378892292800, value=14
010012010114210 column=s:HOUR, timestamp=1378892292800, value=21
010012010114210 column=s:MINUTE, timestamp=1378892292800, value=0
010012010114210 column=s:MONTH, timestamp=1378892292800, value=1
I want to calculate the record size: Fixed part needed by KeyValue format
= Key Length + Value Length + Row Length + CF Length + Timestamp + Key
Value = ( 4 + 4 + 2 + 1
8 + 1) = 20 Bytes
Variable part needed by KeyValue format = Row + Column Family + Column
Qualifier + Value
Total bytes required = Fixed part + Variable part
1 Column = 20 + (15 + 1 + 7 + 5) = 48 Bytes
1 Column = 20 + (15 + 1 + 4 + 4) = 44 Bytes
1 Column = 20 + (15 + 1 + 3 + 2) = 41 Bytes
1 Column = 20 + (15 + 1 + 4 + 2) = 42 Bytes
1 Column = 20 + (15 + 1 + 6 + 1) = 43 Bytes
1 Column = 20 + (15 + 1 + 6 + 1) = 43 Bytes
one record need 271 Bytes And I hava 2 million record Total Size is about
542MB My Question isF This calculation method is right ?