Hi Rams, How are you going to access you data?
HBase will create one cell (Which mean rowkey+timestamp+...+data) for eache cell. Are you really going to sometime access Address Line1 without accessing Address Line2? Are you really going to access the City wihtout accessing the State? If not, why not just put a JSon object with all this data in a single cell? So at the end your table will look llike: *Table Name : Customer* * * *Field Name Column Family* Customer Information CF1 Address CF1 In Customer Information you bundle: Customer Number CF1 DOB CF1 FName CF1 MName CF1 LName CF1 And in Address you bundle: Address Type CF2 Address Line1 CF2 Address Line2 CF2 Address Line3 CF2 Address Line4 CF2 State CF2 City CF2 Country CF2 But if you always access the address when you access the customer information, then the best way might be to just put all those field in a single JSon object, and have just one CF and on C in your table... Regarding the key, if you customer number is sequential and you insert based on this field, you will hotspot one server at a time... If the number is "random", then it's ok. HTH. JM 2012/12/24, Mohammad Tariq <[email protected]>: > it is. but why do you want to do that? you will run into issues once your > data starts growing. each cell, along with the actual value stores few > additional things, *row, column *and the *version. *as a result you will > loose space if you do that. > > Best Regards, > Tariq > +91-9741563634 > https://mtariq.jux.com/ > > > On Mon, Dec 24, 2012 at 5:00 PM, Ramasubramanian Narayanan < > [email protected]> wrote: > >> Hi, >> >> Is it ok to have same column into different column familes? >> >> regards, >> Rams >> >> On Mon, Dec 24, 2012 at 4:06 PM, Mohammad Tariq <[email protected]> >> wrote: >> >> > you are creating 2 different rows here. cf means how column are clubbed >> > together as a single entity which is represented by that cf. but here >> > you >> > are creating 2 different rows having one cf each, CF1 and CF2 >> respectively. >> > if you want to have 1 row with 2 cf, you have to do use same rowkey for >> > both the cf. >> > >> > >> > >> > Best Regards, >> > Tariq >> > +91-9741563634 >> > https://mtariq.jux.com/ >> > >> > >> > On Mon, Dec 24, 2012 at 3:41 PM, Ramasubramanian Narayanan < >> > [email protected]> wrote: >> > >> > > Hi, >> > > >> > > *Table Name : Customer* >> > > * >> > > * >> > > *Field Name Column Family* >> > > Customer Number CF1 >> > > DOB CF1 >> > > FName CF1 >> > > MName CF1 >> > > LName CF1 >> > > Address Type CF2 >> > > Address Line1 CF2 >> > > Address Line2 CF2 >> > > Address Line3 CF2 >> > > Address Line4 CF2 >> > > State CF2 >> > > City CF2 >> > > Country CF2 >> > > >> > > Is it good to have rowkey as follows for the same table? >> > > >> > > Rowkey Design: >> > > -------------- >> > > For CF1 : Customer Number + YYYYMMD (business date) >> > > For CF2 : Customer Number + Address Type >> > > >> > > Note : >> > > Address Type can be any of HOME/OFFICE/OTHERS >> > > >> > > regards, >> > > Rams >> > > >> > >> >
