Not having an index doesn't matter if you're going to read all the subcolumns back at once, which IIANM is the idea here.
On Mon, Jun 21, 2010 at 12:20 PM, hu wei <whtiand...@gmail.com> wrote: > in datamodel wiki: > You can think of each super column name as a term and the columns within as > the docids with rank info and other attributes being a part of it. If you > have keys as the userids then you can have a per-user index stored in this > form. This is how the per user index for term search is laid out for Inbox > search at Facebook. > a question: because subcolumn does't has index ,does it has performance > bottleneck? -- Jonathan Ellis Project Chair, Apache Cassandra co-founder of Riptano, the source for professional Cassandra support http://riptano.com
