| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Jan Wieck <jan(at)wi3ck(dot)info> |
| Cc: | Kevin Grittner <kgrittn(at)postgresql(dot)org>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: [COMMITTERS] pgsql: Fix an O(N^2) problem in foreign key references. |
| Date: | 2015-09-15 13:51:48 |
| Message-ID: | 22834.1442325108@sss.pgh.pa.us |
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| Lists: | pgsql-committers pgsql-hackers |
Jan Wieck <jan(at)wi3ck(dot)info> writes:
> On 09/14/2015 09:56 AM, Tom Lane wrote:
>> Kevin Grittner <kgrittn(at)postgresql(dot)org> writes:
>>> Fix an O(N^2) problem in foreign key references.
>> Judging from the buildfarm, this patch is broken under
>> CLOBBER_CACHE_ALWAYS. See friarbird's results in particular.
>> I might be too quick to finger this patch, but nothing else
>> lately has touched foreign-key behavior, and the foreign_key
>> test is where things are going south.
> I'm able to reproduce that failure with CLOBBER_CACHE_ALWAYS and it
> definitely is caused by this commit. Do you want to back it out for the
> time being? Kevin is on vacation right now.
I'll take a look today, and either fix it if I can find the problem
quickly or back it out.
(If anyone else is already looking at it, happy to defer to you...)
regards, tom lane
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