[infinispan-dev] rethinking ISPN transactions

[Dan Berindei]

On Thu, Nov 21, 2013 at 5:39 PM, Pedro Ruivo <pedro at infinispan.org> wrote:

>
>
> On 11/21/2013 03:18 PM, Dan Berindei wrote:
> > Hmm, couldn't you just disable recovery in the TM to get the same
> > performance with a XA resource as with a synchronization?
>
> If you are suggesting to mess around with the TM, I don't think that is
> a good idea. First, the TM is external to Infinispan and second you can
> have others XaResources associated to the TM.
>

I'm not suggesting that Infinispan should change the TM settings, I'm just
wondering if there's a difference between using synchronization in
Infinispan and disabling recovery completely (or using an in-memory
transaction log) from the user's point of view.

Actually, that might be irrelevant if using synchronization can lead to
stale locks in Infinispan. If the commit command fails and doesn't release
the locks, how will the user be able to find out that there are stale locks
and release them?


> >
> >
> > On Thu, Nov 21, 2013 at 1:57 PM, Pedro Ruivo <pedro at infinispan.org
> > <mailto:pedro at infinispan.org>> wrote:
> >
> >
> >
> >     On 11/21/2013 11:34 AM, Galder Zamarreño wrote:
> >      >
> >      >
> >      > It's way faster actually. The speed difference from all the extra
> >     work required by Transaction Manager to deal with multiple XA
> >     resources, make transactions recoverable..etc. We've done tests in
> >     the past (i.e. Hibernate 2LC) comparing both and the difference was
> >     quite big.
> >      >
> >
> >     you are right. I forgot the recovery mechanism :)
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> >
> >
> >
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