why bloom filter is only for row key?

2014-09-14 Thread Philo Yang
Hi all, After reading some docs, I find that bloom filter is built on row keys, not on column key. Can anyone tell me what is considered for not building bloom filter on column key? Is it a good idea to offer a table property option between row key and primary key for what boolm filter is built on

Re: why bloom filter is only for row key?

2014-09-14 Thread Mark Papadakis
There was a per CF skip list and bloom filter in earlier C* releases(serialized right before the actual value). Haven't checked lately but I believe this is no longer the case, or it's configurable and by default it doesn't do it. There is probably a ticket on JIRA that outlines that rationale.