Re: PANIC: can't juggle and compress too

From: Gaetano Mendola <mendola(at)bigfoot(dot)com>
To: "pgsql-bugs(at)postgresql(dot)org" <pgsql-bugs(at)postgresql(dot)org>
Cc: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Subject: Re: PANIC: can't juggle and compress too
Date: 2003-10-29 23:58:24
Message-ID: 3FA05420.3070301@bigfoot.com
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Tom Lane wrote:
> Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> writes:
>
>>Dror Matalon <dror(at)zapatec(dot)com> writes:
>>
>>>Oct 28 01:04:50 ... postgres[7572]: [52227-1] PANIC: can't juggle and compress too
>
>
>>>What does the error message mean?
>
>
>>It's an unimplemented case in FSM memory management. I thought that
>>it was a can't-happen case; either I was wrong and it does need to be
>>implemented, or there's a bug elsewhere that's triggering the failure
>>condition.
>
>
> I've concluded that that case does need to be handled; I think it can
> arise in situations where a relation's allocated share of FSM space
> decreases due to roundoff error. Fix committed accordingly.

Less dangerous then this:

http://mathworld.wolfram.com/RoundoffError.html

:-O

Regards
Gaetano Mendola

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