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From Benoit Perroud <ben...@noisette.ch>
Subject Re: Does anybody work about transaction on cassandra ?
Date Sat, 24 Apr 2010 17:44:13 GMT
"orthogonal" means "90 degrees".  Two lines are orthogonal if the
cross at 90 degrees.

Two ideas are orthogonal means that they are not compatible.

Transactions is orthogonal with Cassandra's design means that it will
require a lot of work and trade-off to implement transactions into
Cassandra.

Is it more clear ?

Kind regards,

Benoit

2010/4/24 dir dir <sikerasakti@gmail.com>:
> 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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