Re: missing locking in at least INSERT INTO view WITH CHECK

From: Andres Freund <andres(at)2ndquadrant(dot)com>
To: Kevin Grittner <kgrittn(at)ymail(dot)com>
Cc: "pgsql-hackers(at)postgresql(dot)org" <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: missing locking in at least INSERT INTO view WITH CHECK
Date: 2013-11-05 19:59:09
Message-ID: 20131105195909.GE14819@awork2.anarazel.de
Views: Raw Message | Whole Thread | Download mbox | Resend email
Thread:
Lists: pgsql-hackers

On 2013-11-05 11:56:25 -0800, Kevin Grittner wrote:
> Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
> > On 2013-11-02 17:05:24 -0700, Kevin Grittner wrote:
> >> Andres Freund <andres(at)2ndquadrant(dot)com> wrote:
>
> >>> Also attached is 0004 which just adds a heap_lock() around a
> >>> newly created temporary table in the matview code which
> >>> shouldn't be required for correctness but gives warm and fuzzy
> >>> feelings as well as less debugging noise.
> >>
> >> Will think about this.  I agree is is probably worth doing
> >> something to reduce the noise when looking for cases that
> >> actually matter.
> >
> > It's pretty much free, so I don't think there really is any
> > reason to deviate from other parts of the code. Note how e.g.
> > copy_heap_data(), DefineRelation() and ATRewriteTable() all lock
> > the new relation, even if it just has been created and is (and in
> > the latter two cases will always be) invisible.
>
> None of those locations are using heap_open() as the first
> parameter to heap_close().

Oh! Sure, what I'd posted was just an absolutely crude hack that surely
isn't committable.

> I'm thinking of something like the attached instead.

Looks fine to me, maybe add a short comment?

Greetings,

Andres Freund

--
Andres Freund http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services

In response to

Responses

Browse pgsql-hackers by date

  From Date Subject
Next Message Kevin Grittner 2013-11-05 20:21:23 Re: missing locking in at least INSERT INTO view WITH CHECK
Previous Message Kevin Grittner 2013-11-05 19:56:25 Re: missing locking in at least INSERT INTO view WITH CHECK