Re: Nasty problem in hash indexes

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: "scott(dot)marlowe" <scott(dot)marlowe(at)ihs(dot)com>
Cc: Neil Conway <neilc(at)samurai(dot)com>, pgsql-hackers(at)postgresql(dot)org
Subject: Re: Nasty problem in hash indexes
Date: 2003-08-29 04:38:40
Message-ID: 25074.1062131920@sss.pgh.pa.us
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"scott.marlowe" <scott(dot)marlowe(at)ihs(dot)com> writes:
> On Thu, 28 Aug 2003, Neil Conway wrote:
>> On Thu, Aug 28, 2003 at 05:37:39PM -0400, Tom Lane wrote:
>>> <shrug> Who's to say? We've found bugs in the btree logic recently,
>>> too.
>>
>> I'd rather print a loud warning when a hash index is created, but keep
>> the code in the tree, than just remove it entirely.

> Postgresql's philosophy has always seemed to be correctness first,
> convenience and performance second.

I agree --- we either fix this bug or remove hash indexes. There's no
third choice. However, I don't agree with killing hash indexes just
because there *might* be more bugs in them. If we have an impractical-
to-fix bug in front of us, then it's time for harsh measures, but
otherwise ...

regards, tom lane

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