[infinispan-dev] rethinking ISPN transactions

[Mircea Markus]

On Nov 12, 2013, at 2:51 PM, Paul Ferraro <paul.ferraro at redhat.com> wrote:

> 3. Optimistic tx without Write Skew Check (WSC)
>> - well, without WSC the transactions are not optimistic by definition 
>> - they are something else: an batch update of multiple key/values. If the batch is successful you know the update was atomic. If it failed you don't get any guarantee
>> - suggestion: optimistic tx should *always* have WSC enabled (no option to configure it)
>> - build our batching functionality on top of what currently is optimistic tx without WSC and document it as such
> 
> OK, but can you elaborate on the last bullet?
> So, the batching API will no longer contain transactional guarantees?

The batching API ATM only guarantees that if the commit(end of batch) succeeds everything is applied. If the commit doesn't succeed you get inconsistencies/no guarantees. That's pretty much the kind of guarantees I'd like the new batching to offer. 

Cheers,
-- 
Mircea Markus
Infinispan lead (www.infinispan.org)