Hi Sean, Thanks for the clarification. So after 2.1 it might add those capabilities ?
On 2014年3月4日 at 下午11:02:53, Sean Cribbs (s...@basho.com) wrote: > Hi Tim, > > We punted on sub-type queries for 2.0. We intend to address them in 2.1, so > yes you must fetch the entire set or map in order to find out things like > membership and cardinality. > > > On Tue, Mar 4, 2014 at 8:01 AM, EmiNarcissus wrote: > > > Hi, > > > > I’m now porting the riak 2.0 driver for twisted, it works beautifully now > > with what Yokozuna provides, also have a great back-port ability,really > > appreciate everything what this team have brought us XD. But because it > > still in lacks of document, I must read the implementation both from ruby > > and riakc-erl repo to get it started(erlang is okay for me, but I’m not > > quite familiar with ruby,sadly looks like only ruby’s client implementation > > is throughly right now). > > > > So here is my question on the datatype implementation on CRDT system. > > > > From the code I can tell , fetch_dt/update_dt/modify_dt is what have been > > exposed from the pbc interface. Now I’m more focused on Set object, so each > > time client will fetch the whole set(fetch_dt) from the server and build > > the set on the local end, and maintain a add/remove operation list to send > > to the server when user does a update/add/remove action. > > > > But I’m a little bit confused here, like what redis provides, a set have a > > ismember function is being done on the server instead of fetch/test manner. > > Does this available for Riak 2.0 Set datatype(just like what Riak1.4 > > Counter object provided, it will do the operation on the server > > side,MISMEMBER a b, it will either return True/False). Currently I only can > > see add/update/delete operation on pbc proto file, and don’t have something > > alike, is that in a Todo list ? or will not implement at all(I will > > reconsider how the data should be structured if so). This feature will be > > really helpful when the dataset is big enough(like more than 10k values in > > it.) > > > > > > Best, > > Tim Lee > > > > > > > > _______________________________________________ > > riak-users mailing list > > riak-users@lists.basho.com > > http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com > > > > > > -- > Sean Cribbs > Software Engineer > Basho Technologies, Inc. > http://basho.com/ >
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