Re: Research on scalability bug finder for Cassandra

2016-04-11 Thread Jason Brown
+1 to Tupshin's proposal: 10k nodes (massive clusters) really is the next frontier. I don't expect the vnodes to add that much to the gossip dissemination as the tokens per-node are sent out only a handful of times (when a node joins the ring, mostly). Without having hard data to back myself up, I

Re: Research on scalability bug finder for Cassandra

2016-04-11 Thread tupshin
Hi Haryadi, Personally I'd love to see your approach extended to test up to 10K nodes, or so. There are not too many known instances of scaling past 1000 nodes, and as the need for scale grows, and as scale out hardware becomes more commonplace (high density, but with lots of small servers...aka

Re: Research on scalability bug finder for Cassandra

2016-04-11 Thread Haryadi Gunawi
Hi Jonathan, Thanks for the reply! We don't need a patched version of Cassandra. Specifically, this is what we'd like to get help from you if possible: Cassandra devs: "Here are recent JIRA entries that discuss scale-dependent bugs: CASSANDRA-X, -Y, -Z (where XYZ are JIRA bug#)" Our side: We

Re: Research on scalability bug finder for Cassandra

2016-04-08 Thread Jonathan Ellis
Sounds very interesting! We'd love to hear more about your approach. In particular, does it require a patched version of Cassandra? On Thu, Apr 7, 2016 at 6:18 PM, Tanakorn Leesatapornwongsa < tanak...@cs.uchicago.edu> wrote: > Dear Cassandra development team, > > We are computer science resear