de253d21__HBase_vs__BigTable_Comparison__Feature
[Google BigTable] Hundreds at Most [Apache HBase] Less than 100 [Notes] While the number of rows and columns is theoretically unbound the number of column families is not. This is a design trade-off but does not impose too much restrictions if the tables and key are designed accordingly. [Feature] 
Number of Column Families
Lineland: HBase vs. BigTable Comparison
Feature