Michael Paquier <michael(dot)paquier(at)gmail(dot)com> writes:
> Based on an idea of Heikki Linnakangas, here is a patch in order to improve
> 2PC
> by sending the state files of prepared transactions to shared memory instead
> of disk.
I don't understand how this can possibly work. The entire point of
2PC is that the state file is guaranteed to be on disk so it will
survive a crash. What good is it if it's in shared memory?
Quite aside from that, the fixed size of shared memory makes this seem
pretty impractical.
regards, tom lane