| From: | Heikki Linnakangas <hlinnakangas(at)vmware(dot)com> |
|---|---|
| To: | Kevin Grittner <kgrittn(at)ymail(dot)com> |
| Cc: | Robert Haas <robertmhaas(at)gmail(dot)com>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Race condition in b-tree page deletion |
| Date: | 2013-12-17 07:56:09 |
| Message-ID: | 52B00399.4020804@vmware.com |
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| Thread: | |
| Lists: | pgsql-hackers |
On 12/17/2013 03:57 AM, Kevin Grittner wrote:
> I agree with others that this patch is not suitable for
> back-patching. I wonder whether some other solution might be worth
> back-patching, since it is clearly a bug. The "never delete
> internal pages" might be safe enough to consider. It would lead to
> some degree of bloat, but perhaps bloat is better than errors. Of
> course, the argument can certainly be made that people hit the bug
> so rarely that we're better off just leaving it alone in stable
> branches. Anyway, that would be a different patch.
I don't think "never delete internal pages" would be acceptable. In
particular, it would bloat indefinitely for a smallish FIFO queue table
with a timestamp column.
- Heikki
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