On Thu, Apr 5, 2018 at 4:55 PM, Andrey Borodin <x4...@yandex-team.ru> wrote:

>
>
> > 5 апр. 2018 г., в 14:33, Tomas Vondra <tomas.von...@2ndquadrant.com>
> написал(а):
> >
> > This patch version seems fine to me. I'm inclined to mark it RFC.
> +1
> The patch works fine for me. I've tried different combinations of backend
> cancelation and the only suspicious thing I found is that you can start
> multiple workers by cancelling launcher and not cancelling worker. Is it
> problematic behavior? If we run pg_enable_data_checksums() it checks for
> existing launcher for a reason, m.b. it should check for worker too?
>

I don't think it's a problem in itself -- it will cause pointless work, but
not actually cause any poroblems I think (whereas duplicate launchers could
cause interesting things to happen).

How did you actually cancel the launcher to end up in this situation?

I think it worth to capitalize WAL in "re-write the page to wal".
>

In the comment, right? Yeah, easy fix.,

-- 
 Magnus Hagander
 Me: https://www.hagander.net/ <http://www.hagander.net/>
 Work: https://www.redpill-linpro.com/ <http://www.redpill-linpro.com/>

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