Re: Scaling up deferred unique checks and the after trigger queue

From: Robert Haas <robertmhaas(at)gmail(dot)com>
To: Dean Rasheed <dean(dot)a(dot)rasheed(at)googlemail(dot)com>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Scaling up deferred unique checks and the after trigger queue
Date: 2009-10-19 17:02:37
Message-ID: 603c8f070910191002t5771f96cqd3a9b2050f70b1a4@mail.gmail.com
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On Mon, Oct 19, 2009 at 12:48 PM, Dean Rasheed
<dean(dot)a(dot)rasheed(at)googlemail(dot)com> wrote:
> This is a WIP patch to replace the after-trigger queues with TID bitmaps
> to prevent them from using excessive amounts of memory. Each round of
> trigger executions is a modified bitmap heap scan.

If the bitmap becomes lossy, how do you preserve the correct semantics?

...Robert

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Kevin Grittner 2009-10-19 17:05:10 Re: Controlling changes in plpgsql variable resolution
Previous Message David E. Wheeler 2009-10-19 16:52:59 Re: Controlling changes in plpgsql variable resolution