On Tue, Jun 18, 2013 at 4:04 AM, aaron morton <aa...@thelastpickle.com> wrote: >> Even more if we could automate some up-scale thanks to AWS alarms, It >> would be awesome. > > I saw a demo for Priam (https://github.com/Netflix/Priam) doing that at > netflix in March, not sure if it's public yet. > >> Are the vnodes feature and the tokens =>vnodes transition safe enough to >> go live with vnodes ? > > There have been some issues, search the user list for shuffle and as always > test. > >> Any advice about vnodes ? > > They are in use out there. It's a sizable change so it would be good idea to > build a test system for running shuffle and testing your application. There > have been some issues with repair and range scans (including hadoop > integration.)
Also, in his presentation at last week's Summit, Eric Evans suggested not using shuffle. As an alternative he suggested removing and replacing nodes one-by-one. Jim > > Cheers > > ----------------- > Aaron Morton > Freelance Cassandra Consultant > New Zealand > > @aaronmorton > http://www.thelastpickle.com > > On 18/06/2013, at 7:04 PM, Alain RODRIGUEZ <arodr...@gmail.com> wrote: > > Any insights on vnodes, one month after my original post ? > > > 2013/5/16 Alain RODRIGUEZ <arodr...@gmail.com> >> >> Hi, >> >> Adding vnodes is a big improvement to Cassandra, specifically because we >> have a fluctuating load on our Cassandra depending on the week, and it is >> quite annoying to add some nodes for one week or two, move tokens and then >> having to remove them and then move tokens again. Even more if we could >> automate some up-scale thanks to AWS alarms, It would be awesome. >> >> We don't use vnodes yet because Opscenter did not support this feature and >> because we need to have a reliable production. Now Opscenter handles vnodes. >> >> Are the vnodes feature and the tokens =>vnodes transition safe enough to >> go live with vnodes ? >> >> What would be the transition process ? >> >> Does someone auto-scale his Cassandra cluster ? >> >> Any advice about vnodes ? > > >
