Re: Possible infinite loop in query using bitmap scans

From: Casey Duncan <casey(at)pandora(dot)com>
To: Michael Fuhr <mike(at)fuhr(dot)org>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: Possible infinite loop in query using bitmap scans
Date: 2006-03-14 21:31:16
Message-ID: 464cadd195a842901ad17cff541ef55e@pandora.com
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On Mar 13, 2006, at 5:25 PM, Casey Duncan wrote:
[..]
>>> If I restart the postmaster, the query will complete in the expected
>>> time.
>>
>> Does the problem eventually start happening again? If so, after
>> how long? How did you determine that the restart is relevant? Do
>> you consistently see different (presumably better) performance after
>> a restart than if you don't restart?

I restarted postgres this morning and this time it didn't seem to help.
That query has been running for several hours now. I'm going to let it
go a while longer to see if it eventually completes, but I suspect it
won't. So perhaps the prior restart was just dumb luck.

I'll try some narrower queries as well.

-Casey

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