Re: parallel mode and parallel contexts

On 7 January 2015 at 13:11, Robert Haas <robertmhaas@gmail.com> wrote:
> On Tue, Jan 6, 2015 at 4:37 PM, Simon Riggs <simon@2ndquadrant.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