From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
---|---|
To: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
Cc: | PostgreSQL-patches <pgsql-patches(at)postgresql(dot)org>, Alvaro Herrera <alvherre(at)dcc(dot)uchile(dot)cl> |
Subject: | Re: nested xacts and phantom Xids |
Date: | 2004-06-20 21:43:48 |
Message-ID: | 10281.1087767828@sss.pgh.pa.us |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers pgsql-patches |
Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> writes:
> Let me add that outside transactions read those phantom xid only when
> they are doing dirty reads. What I don't understand is when do outside
> transactions see tuples created inside a transaction? INSERT into a
> table with a unique key?
> Once the main transaction commits, these phantom tuples should work just
> like ordinary tuples except they get their cmin overwritten when they
> are expired, I think.
You're not doing anything to increase my confidence level in this
concept. You invented it, and even you aren't sure how it works.
regards, tom lane
From | Date | Subject | |
---|---|---|---|
Next Message | Simon Riggs | 2004-06-20 22:27:31 | Re: Tablespaces |
Previous Message | Tom Lane | 2004-06-20 21:34:41 | Re: nested xacts and phantom Xids |
From | Date | Subject | |
---|---|---|---|
Next Message | Andrew Dunstan | 2004-06-20 22:07:40 | Re: Data directory with trailing [back]slash |
Previous Message | Tom Lane | 2004-06-20 21:34:41 | Re: nested xacts and phantom Xids |