Re: Perform streaming logical transactions by background workers and parallel apply

On Wed, Apr 26, 2023 at 4:11 PM Zhijie Hou (Fujitsu)
<houzj(dot)fnst(at)fujitsu(dot)com> wrote:
>
> On Wednesday, April 26, 2023 5:00 PM Alexander Lakhin <exclusion(at)gmail(dot)com> wrote:
> >
> > IIUC, that assert will fail in case of any error raised between
> > ApplyWorkerMain()->logicalrep_worker_attach()->before_shmem_exit() and
> > ApplyWorkerMain()->InitializeApplyWorker()->BackgroundWorkerInitializeC
> > onnectionByOid()->InitPostgres().
>
> Thanks for reporting the issue.
>
> I think the problem is that it tried to release locks in
> logicalrep_worker_onexit() before the initialization of the process is complete
> because this callback function was registered before the init phase. So I think we
> can add a conditional statement before releasing locks. Please find an attached
> patch.
>

Alexander, does the proposed patch fix the problem you are facing?
Sawada-San, and others, do you see any better way to fix it than what
has been proposed?

--
With Regards,
Amit Kapila.