Re: ALTER TABLE lock strength reduction patch is unsafe

Simon Riggs <simon@2ndquadrant.com>

From: Simon Riggs <simon@2ndQuadrant.com>
To: Alvaro Herrera <alvherre@commandprompt.com>
Cc: Noah Misch <noah@leadboat.com>, Tom Lane <tgl@sss.pgh.pa.us>, Robert Haas <robertmhaas@gmail.com>, Bruce Momjian <bruce@momjian.us>, Pg Hackers <pgsql-hackers@postgresql.org>
Date: 2012-01-02T19:54:33Z
Lists: pgsql-hackers

Commits

Same data as JSON: GET /api/v1/messages/:b64id/commits the thread's linked commits as JSON, with link sources. API reference →
  1. Add bytea_agg, parallel to string_agg.

  2. Fix ALTER TABLE ONLY .. DROP CONSTRAINT.

On Mon, Jan 2, 2012 at 7:49 PM, Alvaro Herrera
<alvherre@commandprompt.com> wrote:
>
> Excerpts from Noah Misch's message of lun ene 02 16:39:09 -0300 2012:
>>
>> On Mon, Jan 02, 2012 at 04:33:28PM -0300, Alvaro Herrera wrote:
>
>> > Uh, I thought detoasting had its own visibility test function .. I mean,
>> > otherwise, what is HeapTupleSatisfiesToast for?
>>
>> The SnapshotNow scan was actually to build the relcache entry for the toast
>> table before scanning the toast table itself.  Stack trace:
>
> Oh, right, that makes sense.

Certainly does. Thanks Noah, much appreciated.

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