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Re: visibility maps and heap_prune

From: Bruce Momjian <bruce(at)momjian(dot)us>
To: Pavan Deolasee <pavan(dot)deolasee(at)gmail(dot)com>
Cc: pgsql-hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: visibility maps and heap_prune
Date: 2010-02-26 02:49:10
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
Whatever happened to this?  It was in the first 9.0 commitfest but was
returned with feedback but never updated:


Pavan Deolasee wrote:
> ISTM that the PD_ALL_VISIBLE flag and the visibility map bit can be set at
> the end of pruning operation if we know that there are only tuples visible
> to all transactions left in the page. The way pruning is done, I think it
> would be straight forward to get this information.
> Thanks,
> Pavan
> -- 
> Pavan Deolasee
> EnterpriseDB

  Bruce Momjian  <bruce(at)momjian(dot)us>
  PG East:
  + If your life is a hard drive, Christ can be your backup. +

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