Is there a way to do the following: 1) Get vector clocks of the object being processed in a map-reduce query? (For example, I'm fetching some objects using a map-reduce request based on a 2i range, filtering them further in the map phase, and would like to include the vclocks in the output, so that the client can properly modify any objects returned.) 2) Tell riak not to store the object I'm trying to store, unless the vclock I'm updating (the one I read the object with) matches the latest vclock known to riak at the time of the store operation. (Of course, simultaneous writes would still cause siblings assuming allow_mult=true or make riak store just one of the objects while reporting success on both write operations if allow_mult=false, but I'm ok with that.) Basically, I would just like the store operation to fail if a sibling would detectably be created, instead of creating the sibling. It seems I can achieve almost the same effect with the If-Unmodified-Since header, but can I do it with vector clocks?
Thanks, Gints -- View this message in context: http://riak-users.197444.n3.nabble.com/Vector-clocks-tp4029019.html Sent from the Riak Users mailing list archive at Nabble.com. _______________________________________________ riak-users mailing list riak-users@lists.basho.com http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
