From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
---|---|
To: | Robert Haas <robertmhaas(at)gmail(dot)com> |
Cc: | "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | Re: parallel mode and parallel contexts |
Date: | 2015-01-07 15:34:13 |
Message-ID: | CA+U5nM+PAprPg54yPkZMOrX5xoM_u48x+yLwMvKz+XCSoxEB=Q@mail.gmail.com |
Views: | Raw Message | Whole Thread | Download mbox | Resend email |
Thread: | |
Lists: | pgsql-hackers |
On 7 January 2015 at 13:11, Robert Haas <robertmhaas(at)gmail(dot)com> wrote:
> On Tue, Jan 6, 2015 at 4:37 PM, Simon Riggs <simon(at)2ndquadrant(dot)com> wrote:
>> So when you say "Only the top frame of the transaction state stack is
>> copied" you don't mean the top, you mean the bottom (the latest
>> subxact)? Which then becomes the top in the parallel worker? OK...
>
> The item most recently added to the stack is properly called the top,
> but I guess it's confusing in this case because the item on the bottom
> of the stack is referred to as the TopTransaction. I'll see if I can
> rephrase that.
Yes, I didn't mean to suggest the confusion was introduced by you -
it's just you stepped into the mess by correctly using the word top in
a place where its meaning would be opposite to the close-by usage of
TopTransaction.
Anyway, feeling good about this now. Thanks for your patience.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
From | Date | Subject | |
---|---|---|---|
Next Message | Aaron Botsis | 2015-01-07 15:37:58 | Re: Patch: [BUGS] BUG #12320: json parsing with embedded double quotes |
Previous Message | Alvaro Herrera | 2015-01-07 15:33:20 | Re: [RFC] LSN Map |