Hi Everyone,

I just read Jonathan Ellis' great post on Secondary Indexes  
(http://www.datastax.com/dev/blog/whats-new-cassandra-07-secondary-indexes) and 
I was wondering where I can find a bit more info on them. I would like to know:

1) Are there in limitations beside the hash properties (no between queries)? 
Like size or memory, etc?

2) Are there distributed? If so, how does that work? How are there stored on 
the nodes?

3) When you write a new row, when/how does the index get updated? What I would 
like to know is the atomicity of the operation, is the "index write" part of 
the "row write"?

4) Is there a difference between creating a secondary index vs creating an 
"index" CF manually such as "users_by_country"? 


Thanks,

Drew

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