+1 What kinds of problems? Thanks, Dean From: Илья Шипицин <chipits...@gmail.com<mailto:chipits...@gmail.com>> Reply-To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Date: Tuesday, September 4, 2012 1:12 PM To: "user@cassandra.apache.org<mailto:user@cassandra.apache.org>" <user@cassandra.apache.org<mailto:user@cassandra.apache.org>> Subject: Re: are asynchronous schema updates possible ?
what kind of problems? "nodes do not agree about schema" exception on later node ? something worse? 2012/9/5 Sylvain Lebresne <sylv...@datastax.com<mailto:sylv...@datastax.com>> On Tue, Sep 4, 2012 at 8:23 PM, Илья Шипицин <chipits...@gmail.com<mailto:chipits...@gmail.com>> wrote: > Is it ok multiple servers will create/update the same CF at once ? I'm > looking into dynamic schema update during application deploy/update. As said above, it is ok for update the same CF concurrently in 1.1 but *not* for creation (if you create CF concurrently, whether that is the same CF or not, you might have problem). The last part will be fixed in 1.2 however. -- Sylvain > > вторник, 4 сентября 2012 г. пользователь Sylvain Lebresne писал: > >> To add to Aaron response, you can update a CF concurrently in 1.1 >> already. However, you cannot create multiple CF concurrently just yet, >> but that will be fixed in 1.2. >> >> -- >> Sylvain >> >> On Sun, Aug 26, 2012 at 11:04 PM, aaron morton >> <aa...@thelastpickle.com<mailto:aa...@thelastpickle.com>> >> wrote: >> > Concurrent schema changes are coming in 1.2. >> > >> > I could not find a single issue that covered it, that may be my bad >> > search >> > fu. The issues for 1.2 are here >> > https://issues.apache.org/jira/browse/CASSANDRA/fixforversion/12319262 >> > >> > Cheers >> > >> > ----------------- >> > Aaron Morton >> > Freelance Developer >> > @aaronmorton >> > http://www.thelastpickle.com >> > >> > On 24/08/2012, at 7:06 PM, Илья Шипицин >> > <chipits...@gmail.com<mailto:chipits...@gmail.com>> wrote: >> > >> > Hello! >> > >> > we are looking into concurent schema updates (when multiple instances of >> > application create CFs at once. >> > >> > at the http://wiki.apache.org/cassandra/MultiTenant there's open ticket >> > 1391, it is said it is still open. >> > however, in jura is said "1.1.0 is fixed" >> > >> > can schema be updated asynchrously on 1.1.x ? or not ? >> > if multiple server create the same CF ? >> > >> > Cheers, >> > Ilya Shipitsin >> > >> >
