| From: | Dmitry Dolgov <9erthalion6(at)gmail(dot)com> |
|---|---|
| To: | Noah Misch <noah(at)leadboat(dot)com> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: SimpleLruTruncate() mutual exclusion |
| Date: | 2020-01-30 15:34:33 |
| Message-ID: | 20200130153433.6gvgm723lzpgiogh@localhost |
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| Thread: | |
| Lists: | pgsql-hackers |
> On Sun, Nov 17, 2019 at 10:14:26PM -0800, Noah Misch wrote:
>
> > I'm probably missing something, so just wanted to clarify. Do I
> > understand correctly, that thread [1] and this one are independent, and
> > it is assumed in the scenario above that we're at the end of XID space,
> > but not necessarily having rounding issues? I'm a bit confused, since
> > the reproduce script does something about cutoffPage, and I'm not sure
> > if it's important or not.
>
> I think the repro recipe contained an early fix for the other thread's bug.
> While they're independent in principle, I likely never reproduced this bug
> without having a fix in place for the other thread's bug. The bug in the
> other thread was easier to hit.
Just to clarify, since the CF item for this patch was withdrawn
recently. Does it mean that eventually the thread [1] covers this one
too?
[1]: https://www.postgresql.org/message-id/flat/20190202083822.GC32531%40gust.leadboat.com
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