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help / color / mirror / Atom feedFrom: Amit Kapila <[email protected]>
To: Zhijie Hou (Fujitsu) <[email protected]>
Cc: Alexander Lakhin <[email protected]>
Cc: PostgreSQL Hackers <[email protected]>
Cc: Masahiko Sawada <[email protected]>
Subject: Re: Perform streaming logical transactions by background workers and parallel apply
Date: Fri, 28 Apr 2023 08:21:22 +0530
Message-ID: <CAA4eK1+Qg79oR0LknxC05DvWfh_eiyh7eO3sDOiuVsu_dCUDHA@mail.gmail.com> (raw)
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On Wed, Apr 26, 2023 at 4:11 PM Zhijie Hou (Fujitsu)
<[email protected]> wrote:
>
> On Wednesday, April 26, 2023 5:00 PM Alexander Lakhin <[email protected]> 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.
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Subject: Re: Perform streaming logical transactions by background workers and parallel apply
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