Cassandra 1.1 row isolation cross datacenter replication

[Allen Servedio <al...@gmail.com>]

Hi,

I saw that row level isolation was added in the beta of Cassandra 1.1 and I
have the following question: given a ring that has two datacenters and a
keyspace defined to replicate to both, if a row is written with local
quorum to the first data center, will it still be isolated when it
replicates to the other datacenter? Or is isolation for that row broken in
the other datacenter (so that isolation is essentially back to the column
level for the other datacenter)?

Hopefully what I am asking makes sense... If not, I will give a more
detailed example.

Thanks,
Allen

Re: Cassandra 1.1 row isolation cross datacenter replication

[Benoit Perroud <be...@noisette.ch>]

The isolation is guarantee locally to the node.
If two client are reading / writing to the same node, the one that
read will not see partial mutations.

2012/2/21 Allen Servedio <al...@gmail.com>:
> Hi,
>
> I saw that row level isolation was added in the beta of Cassandra 1.1 and I
> have the following question: given a ring that has two datacenters and a
> keyspace defined to replicate to both, if a row is written with local quorum
> to the first data center, will it still be isolated when it replicates to
> the other datacenter? Or is isolation for that row broken in the other
> datacenter (so that isolation is essentially back to the column level for
> the other datacenter)?
>
> Hopefully what I am asking makes sense... If not, I will give a more
> detailed example.
>
> Thanks,
> Allen



-- 
sent from my Nokia 3210