Number of column families vs Number of column family qualifiers

[weliam . cloud]

Hi folks,
I have a question about the scheme design for Hbase. In general, should I  
prefer to have more column families with less column family qualifiers or  
should I prefer to have less column families with more column family  
qualifiers?

For example, I could have one column family with four qualifiers inside or  
I could have four column families with one qualifier in each of them, which  
one should I use?

I understand that each column family is going to be stored in a store. So,  
my understanding is that: performance wise, it would be reasonable to  
choose 1 column family with 4 qualifiers in the example above; considering  
the sparse storage space, it would be reasonable to choose 4 column  
families with 1 qualifier in the example above. Is this correct?

Many thanks.


William