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Posted to user@cassandra.apache.org by Todd Burruss <bb...@expedia.com> on 2012/06/03 02:53:47 UTC
batch isolation
reading the 1.1 "what's new" here, http://www.datastax.com/docs/1.1/getting_started/new_features, I'm wondering about row level isolation.
two questions:
1 – does this mean that a batch_mutate that first sends a "row delete" mutation on key X, then subsequent insert mutations for key X is isolated?
2 – does isolation span column families for the same key within the same batch_mutate?
Re: batch isolation
Posted by Sylvain Lebresne <sy...@datastax.com>.
On Sun, Jun 3, 2012 at 2:53 AM, Todd Burruss <bb...@expedia.com> wrote:>
> 1 – does this mean that a batch_mutate that first sends a "row delete"
> mutation on key X, then subsequent insert mutations for key X is isolated?
I'm not sure what you mean by having "a batch_mutate that first sends
... then ...", since a batch_mutate is a single API call.
> 2 – does isolation span column families for the same key within the same
> batch_mutate?
No, it doesn't span column families (contrarily to atomicity). There
is more details in
http://www.datastax.com/dev/blog/row-level-isolation.
--
Sylvain