On Mon, Aug 22, 2016 at 10:09 PM, Amit Kapila <amit.kapila16@gmail.com> wrote:
> Won't the similar problem exists for nonExclusiveBackups? Basically
> in similar situation, the count for nonExclusiveBackups will be
> decremented and if it hits pg_start_backup_callback(), the following
> Assertion can fail.
> pg_start_backup_callback()
> {
> ..
> Assert(XLogCtl->Insert.nonExclusiveBackups > 0);
> ..
> }
This cannot be hit for non-exclusive backups as pg_start_backup() and
pg_stop_backup() need to be launched from the same session: their call
will never overlap across session, and this overlap is the reason why
exclusive backups are exposed to the problem.
--
Michael
