Not sure if there is a particular reason or not. However, currently tx implementation does not track delta once applied to TXEntryState in a transaction. Maybe a transaction tries to guarantee the entries in the transaction will be applied to all replicated copies when there is a concurrent non-transactional operation as well? Delta would only update parts of an entry, but the other non-transactional operation could have changed the other parts.
Regards, Eric On Thu, Apr 23, 2020 at 1:07 AM Alberto Gomez <[email protected]> wrote: > Thanks to both for the clarifications. > > I still have one remaining question regarding this topic. Is there a > technical reason why that part of the transaction cannot use delta > propagation? > > Best regards, > > -Alberto G. > ------------------------------ > *From:* Eric Shu <[email protected]> > *Sent:* Thursday, April 23, 2020 1:36 AM > *To:* [email protected] <[email protected]> > *Subject:* Re: Delta propagation and transactions > > Anil, > > The tx data propagation between accessor and data store (part of the > transactions) could use delta as well; and if the transaction originator > does not host the primary copy of the data, it can also use delta to update > within a transaction. > > Your understanding of client/server is correct. > > Regards, > Eric > > On Wed, Apr 22, 2020 at 4:05 PM Anilkumar Gingade <[email protected]> > wrote: > > Eric, > Is that, the tx data propagation between peers/nodes (part of the > transactions) doesn't use delta? > Is it used when tx is originated in client (between client and server), > but not between peers....I am trying to see where delta is used. > > -Anil. > > > On Wed, Apr 22, 2020 at 11:58 AM Eric Shu <[email protected]> wrote: > > The transaction commits on a transaction host node (primary copy for > partitioned region, or one of the copies for replicate region), the entry > operations within this commit needs to be distributed to partitioned > region's redundant copies, or other replicates for replicate region. This > distribution can not use delta propagation. > > Regards, > Eric > > > On Wed, Apr 22, 2020 at 11:50 AM Alberto Gomez <[email protected]> > wrote: > > Hi Eric, > > What do you mean by "the transactional commit to the replicas can not > use delta propagation". > > Thanks, > > Alberto > > > > ------------------------------ > *De:* Eric Shu <[email protected]> > *Enviado:* miércoles, 22 de abril de 2020 19:53 > *Para:* [email protected] > *Asunto:* Re: Delta propagation and transactions > > Hi, > > Delta propagation is supported inside a transaction. I think the document > is to indicate that the distribution of the transactional commit to the > replicas can not use delta propagation. > > Regards, > Eric > > On Wed, Apr 22, 2020 at 9:55 AM Alberto Gomez <[email protected]> > wrote: > > Hi, > > According to the Geode documentation "Geode does not propagate deltas for > Transactional > commit". > > Is there a reason why delta propagation cannot be supported for data > updated inside transactions? > > Thanks in advance, > > -Alberto G. > > >
