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From dir dir <sikerasa...@gmail.com>
Subject Re: Does anybody work about transaction on cassandra ?
Date Sat, 24 Apr 2010 17:39:39 GMT
Do you mean orthogonal like Commit and Rollback?? For example after we
perform Rollback, hence we cannot going back.

>Including "transaction" in Cassandra needs to turn 90 degrees
>the design of Cassandra

I do not understand what is the meaning of "needs to turn 90 degrees"??

Thank you.

On Sun, Apr 25, 2010 at 12:30 AM, Benoit Perroud <benoit@noisette.ch> wrote:

> "orthogonal" means "go to the opposite direction, but without going
> back". Including "transaction" in Cassandra needs to turn 90 degrees
> the design of Cassandra.
>
> Kind regards,
>
> Benoit.
>
>
>
> 2010/4/24 dir dir <sikerasakti@gmail.com>:
> >>Transactions are orthogonal to the design of Cassandra
> >
> > Sorry, Would you want to tell me what is an orthogonal mean in this
> > context??
> > honestly I do not understand what is it.
> >
> > Thank you.
> >
> >
> > On Thu, Apr 22, 2010 at 9:14 PM, Miguel Verde <miguelitovert@gmail.com>
> > wrote:
> >>
> >> No, as far as I know no one is working on transaction support in
> >> Cassandra.  Transactions are orthogonal to the design of
> Cassandra[1][2],
> >> although a system could be designed incorporating Cassandra and other
> >> elements a la Google's MegaStore[3] to support transactions.  Google
> uses
> >> Paxos, one might be able to use Zookeeper[4] to design such a system,
> but it
> >> would be a daunting task.
> >>
> >> [1] http://www.julianbrowne.com/article/viewer/brewers-cap-theorem
> >> [2]
> http://www.allthingsdistributed.com/2008/12/eventually_consistent.html
> >> [3] http://perspectives.mvdirona.com/2008/07/10/GoogleMegastore.aspx
> >> [4] http://hadoop.apache.org/zookeeper/
> >>
> >> On Thu, Apr 22, 2010 at 2:56 AM, Jeff Zhang <zjffdu@gmail.com> wrote:
> >>>
> >>> Hi all,
> >>>
> >>> I need transaction support on cassandra, so wondering is anybody work
> on
> >>> it ?
> >>>
> >>>
> >>> --
> >>> Best Regards
> >>>
> >>> Jeff Zhang
> >>
> >
> >
>

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