Morning, Afternoon, Evening to all, Here is a great recap from the past three days. We have upcoming talks, blogs, some great Q & A and gists from #riak, and new community code.
Enjoy! Mark Community Manager Basho Technologies wiki.basho.com twitter.com/pharkmillups ---- Riak Recap for Oct. 1-3 1) Germain Maurice will be giving a Riak presentation at the upcoming Open Source Developers Conference happening in Paris on October 9th and 10th. You can get more details on the talk and conference here ---> http://act.osdc.fr/osdc2010fr/talk/3053 Merci, Germain! 2) Q --- How is the real hash value for replicas calculated based on the "preflist"? (from Gerald1 via #riak) A --- The hash is calculated first, then the next subsequent N partitions are chosen for the preflist. 3) @rress wrote up a short blog post entitled "Why do you think Riak is a column-store?" Post here ---> http://rrees.wordpress.com/2010/10/03/why-do-you-think-riak-is-a-column-store/ 4) Q --- Is there riak-admin "leave" option ? to get note out of the ring ? (from artkrz via #riak) A --- You can get a full list of the admin commands and what they do on the wiki ---> https://wiki.basho.com/display/RIAK/Command-Line+Tools 5) Guest27178, seancribbs, technoweenie and jpartogi had a brief chat about whether Riak can be used on "normal" servers and why having at least three Riak nodes makes a lot of sense. Gist here ---> http://gist.github.com/609996 6) Q --- If we want to search over a bucket using map-reduce, do we do it in the map phase or reduce phase? (from jpartogi via #riak) A --- Aside from the performance considerations of doing a full-bucket map-reduce, searching is a form of filtering, which should be done in a map phase. 7) benblack and Gerald1 had a brief conversation in #riak that started with "Anyone know how bitcask handles replication?" Gist here ---> http://gist.github.com/610008 8) jpartogi, benblack, drev1 and siculars had a quick convo in #riak about how/if Riak sorts data in a bucket by default. Gist here ---> http://gist.github.com/610027 9) Q --- If the size of key index exceeds the amount of memory, how does Bitcask handle it? (from Gerald1 via #riak) A --- Obviously when using Bitcask, memory usage is something you should keep a close eye on. If you do happened to exceed RAM, it will swap and when swap is gone it will crash with "out of memory" errors. To protect against this, we generally advise you to have >2x RAM available in your cluster than you expect the size of your keyspace to be. If you haven't seen it already, this spreadsheet is a great tool when you need to do some calculations and capacity planning ---> https://spreadsheets.google.com/ccc?key=0Ak4OBkABJPsxdEowYXc2akxnYU9xNkJmbmZscnhaTFE&hl=en&authkey=CMHw8tYO 10) @siculars will be giving a talk in NYC tomorrow called "Adding Riak to your NoSQL Bag of Tricks." Talk and registration info here ---> http://www.meetup.com/nosql-nyc/calendar/14754065/ Thanks, Alexander! 11) OJ (@TheColonial) has written two great posts focusing on Erlang web development (using Webmachine, Riak and ErlyDTL). Rumor has it that he is hard at work on the third piece, but, in the meantime, he has posted the code he's using to BitBucket. Repo here ---> https://bitbucket.org/OJ/csd/overview Thanks, OJ! _______________________________________________ riak-users mailing list [email protected] http://lists.basho.com/mailman/listinfo/riak-users_lists.basho.com
