Re: Logical WAL sender unresponsive during decoding commit - Mailing list pgsql-hackers

From Amit Kapila
Subject Re: Logical WAL sender unresponsive during decoding commit
Date
Msg-id CAA4eK1+B6qECQi=pURJV6w3wV+ZGS6C78-NiDi5zUhUJpvnaOg@mail.gmail.com
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In response to Re: Logical WAL sender unresponsive during decoding commit  (Robert Haas <robertmhaas@gmail.com>)
Responses Re: Logical WAL sender unresponsive during decoding commit
List pgsql-hackers
On Thu, Oct 20, 2022 at 5:17 AM Robert Haas <robertmhaas@gmail.com> wrote:
> >
> > Pushed.
>
> I think this was a good change, but there's at least one other problem
> here: within ReorderBufferRestoreChanges, the while (restored <
> max_changes_in_memory && *segno <= last_segno) doesn't seem to contain
> a CFI. Note that this can loop either by repeatedly failing to open a
> file, or by repeatedly reading from a file and passing the data read
> to ReorderBufferRestoreChange. So I think there should just be a CFI
> at the top of this loop to make sure both cases are covered.
>

Agreed. The failures due to file operations can make this loop
unpredictable in terms of time, so it is a good idea to have CFI at
the top of this loop.

I can take care of this unless there are any objections or you want to
do it. We have backpatched the previous similar change, so I think we
should backpatch this as well. What do you think?

-- 
With Regards,
Amit Kapila.



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