you know what, after another day of searching I ve found out that (following http://wiki.basho.com/HTTP-Delete-Object.html)
- rw - quorum for both operations (get and put) involved in deleting an object (default is set at the bucket level) - r - (read quorum) how many replicas need to agree when retrieving the object - pr - (primary read quorum) works like r but requires that the nodes read from are not fallback nodes - w - (write quorum) how many replicas to write to before returning a successful response - dw - (durable write quorum) how many replicas to commit to durable storage before returning a successful response - pw - (primary write quorum) how many replicas to commit to primary nodes before returning a successful response why such description cannot be added to page about bucket configuration, it is really weird to find it in delete object http API specification. still I dont get difference between w and dw but I guess it is not that important for now pozdrawiam Paweł Kamiński [email protected] [email protected] ______________________ On 9 October 2012 09:19, kamiseq <[email protected]> wrote: > thanks, > I also visited that section but it deals only with n, r and w property in > general. and reading only about n, r and w it feels like you know what is > going on, and then you see dw, rw, pr and pw and googling doesn't bring > clear explanation, so you get more and more confused. > > (heh I know casing doesn't matter :) > > > pozdrawiam > Paweł Kamiński > > [email protected] > [email protected] > ______________________ > > > On 9 October 2012 07:31, Martin Westergaard Lassen > <[email protected]>wrote: > >> Hi Pawel >> >> The "Concept" wiki page ( >> http://wiki.basho.com/Concepts.html#Reading%2C-Writing%2C-and-Updating-Data) >> has a good introduction to the most important paramters. Casing doesn't >> matter, so r=R. >> >> The Riak Handbook has a good and deep explanation of what those >> parameters are http://riakhandbook.com >> >> *Martin Westergaard Lassen* >> *Software Pilot* >> ** ** >> Trifork A/S**** >> Margrethepladsen 4 · 8000 Aarhus C. · Denmark**** >> Mobile +45 31 12 10 59 >> ** ** >> >> >> Den 08/10/2012 kl. 22.56 skrev kamiseq <[email protected]>: >> >> Im looking for explanation what exactly r, pr, w, dw, pw, rw stands for. >> >> Im sorry if this was already posted but I cannot find anything on >> that. I tried wiki.basho.com/Riak-Glossary.html, >> http://wiki.basho.com/HTTP-API.html#Bucket-Operations, >> http://wiki.basho.com/Buckets.html but it only describes N, R, W. >> >> do I understand correctly that W property is only considered when >> updating value and for first store N value is used? or is it: >> replicate data N times but return success if it was persisted to W >> vnodes. >> if DW is durable write then what W really means? can I get successful >> response after write operation without object being persisted to >> durable storage?? >> >> I must admit Im quite confused here. >> >> And second question, If I set r, pr, w, dw, pw, rw in app.config for >> every configured node in cluster those values will not be added to >> gossiped information, right? >> >> pozdrawiam >> Paweł Kamiński >> >> [email protected] >> [email protected] >> ______________________ >> >> _______________________________________________ >> riak-users mailing list >> [email protected] >> http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com >> >> >> >
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