This is a good question.. I'd love to find out the answer. Seems like a tombstone with prefixes for the keys would work well.
Also, can't any key prefixes work in theory? On Thu, Aug 7, 2014 at 8:33 AM, DuyHai Doan <doanduy...@gmail.com> wrote: > Hello all > > Usually, when using DELETE in CQL3 on some fields, C* creates tombstone > columns for those fields. > > Now if I delete a whole PARTITION (delete from MyTable where > partitionKey=...), what will C* do ? Will it create as many tombstones as > there are physical columns on this partition or will it just mark this > partition as "deleted" (Row Key deletion marker) ? > > On a side note, if I insert a bunch of physical columns in one partition > with the SAME ttl value, after a while they will appear as expired, would > C* need to scan the whole partition on disk to see which columns to expire > or could it see that the whole partition is indeed expired thanks to meta > data/ Partition key cache kept in memory ? I was thinking about the > estimate histograms for TTL but I don't know in detail how it work > > Regards > > Duy Hai DOAN > > -- Founder/CEO Spinn3r.com Location: *San Francisco, CA* blog: http://burtonator.wordpress.com … or check out my Google+ profile <https://plus.google.com/102718274791889610666/posts> <http://spinn3r.com>
