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Re: BUG #1502: hash_seq_search might return removed entry

From: Thomas Hallgren <thhal(at)mailblocks(dot)com>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>, pgsql-bugs(at)postgresql(dot)org
Subject: Re: BUG #1502: hash_seq_search might return removed entry
Date: 2005-02-27 17:06:03
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Lists: pgsql-bugs
Tom Lane wrote:

>Thomas Hallgren <thhal(at)mailblocks(dot)com> writes:
>>Would such a patch be accepted?
>Seems like a brute-force solution.  I'd look first at whether
>AtCommit_Portals could just restart its hashtable scan after
>each deletion; if that seems too inefficient, modify the hash
>table entries themselves to carry a "portal already deleted"
Yes, a static flag indicating that a deletion has occured will work fine 
since all portals that has not been perused but not dropped now has an 
InvalidSubTransactionId. I'll do it that way then.

Thomas Hallgren

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