| From: | Simon Riggs <simon(at)2ndQuadrant(dot)com> |
|---|---|
| To: | Noah Misch <noah(at)leadboat(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Parallel Sort |
| Date: | 2013-05-13 18:55:16 |
| Message-ID: | CA+U5nML0jDX=ExPV3S7W9nOz-2fGW5uJEb4Ehk5KyKKL8683Qw@mail.gmail.com |
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| Lists: | pgsql-hackers |
On 13 May 2013 15:28, Noah Misch <noah(at)leadboat(dot)com> wrote:
> The heavyweight locking mechanism will need to be aware of the association
> between the master and its workers.
Not sure I can see why that would be true.
ISTM that the workers need to be restricted in various ways from a
full-functioned master. If the workers can do things that conflict
with the master and/or each other, we're going to have all kinds of
hurt.
The key is going to be deciding what the restrictions are and then
working out how to enforce them.
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
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