Will the new cluster be evenly balanced? Remember that the old one was pre 1.2.X, so I had no vnodes
I haven't used that tool, will look it up. Thanks for the suggestion! On Tuesday, September 17, 2013, David McNelis wrote: > Stable loader is the way to go to load up the new cluster. > > On Tuesday, September 17, 2013, Juan Manuel Formoso wrote: > >> > If your shuffle succeeds, you will be the first reported case of >> shuffle succeeding on a non-test cluster. >> >> Awesome! :O >> >> I'll try to migrate to a new cluster then. >> >> Any better alternatives than creating a small application that reads from >> one cluster and inserts in the new one that anybody can suggest? >> >> On Tuesday, September 17, 2013, Robert Coli wrote: >> >>> On Tue, Sep 17, 2013 at 12:13 PM, Juan Manuel Formoso < >>> jform...@gmail.com>wrote: >>> >>> > I am running shuffle on a cluster after upgrading to 1.2.X, and I don't >>> > understand how to check progress. >>> > >>> >>> If your shuffle succeeds, you will be the first reported case of shuffle >>> succeeding on a non-test cluster. Until I hear a report of someone having >>> real world success, I recommend against using shuffle. >>> >>> If you want to enable vnodes on a cluster with existing data, IMO you >>> should fork writes and bulk load a replacement cluster. >>> >>> >>> > I'm counting the lines of cassandra-shuffle ls, and it decreases VERY >>> > slowly. Sometimes not at all after 24 hours of processing. >>> > >>> >>> I have heard reports of shuffle taking an insanely long amount of time, >>> such as this, as well. >>> >>> >>> > Is that value accurate? >>> > >>> >>> Probably. >>> >>> >>> > Does the shuffle operation supports disabling/re-enabling (or >>> restarting >>> > the cluster) and resuming from the last position? Or does it start >>> over? >>> > >>> >>> Yes, via the arguments "enable" and "disable". "clear" is what you use if >>> you want to clear the queue and start over. >>> >>> Note that once you have started shuffle, you don't want to add/remove a >>> node until the shuffle is complete. >>> >>> https://issues.apache.org/jira/browse/CASSANDRA-5525 >>> >>> =Rob >>> >> >> >> -- >> *Juan Manuel Formoso >> *Senior Geek >> http://twitter.com/juanformoso >> http://seniorgeek.com.ar >> LLAP >> > -- *Juan Manuel Formoso *Senior Geek http://twitter.com/juanformoso http://seniorgeek.com.ar LLAP
