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From Илья Шипицин <chipits...@gmail.com>
Subject Re: are asynchronous schema updates possible ?
Date Tue, 04 Sep 2012 19:12:29 GMT
what kind of  problems?

"nodes do not agree about schema" exception on later node ? something worse?

2012/9/5 Sylvain Lebresne <sylvain@datastax.com>

> On Tue, Sep 4, 2012 at 8:23 PM, Илья Шипицин <chipitsine@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 <aaron@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 <chipitsine@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
> >> >
> >> >
>

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