Re: ALTER TABLE lock strength reduction patch is unsafe

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От
Josh Berkus
Тема
Re: ALTER TABLE lock strength reduction patch is unsafe
Дата
Msg-id
531653CB.7050406@agliodbs.com
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Дерево обсуждения
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Peter Geoghegan <pg@heroku.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Vik Fearing <vik.fearing@dalibo.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Atri Sharma <atri.jiit@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Stephen Frost <sfrost@snowman.net>
Re: ALTER TABLE lock strength reduction patch is unsafe Alvaro Herrera <alvherre@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Stephen Frost <sfrost@snowman.net>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Stephen Frost <sfrost@snowman.net>
Re: ALTER TABLE lock strength reduction patch is unsafe Atri Sharma <atri.jiit@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Vik Fearing <vik.fearing@dalibo.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Alvaro Herrera <alvherre@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Greg Stark <stark@mit.edu>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Vik Fearing <vik.fearing@dalibo.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Reply-To: Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Atri Sharma <atri.jiit@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Atri Sharma <atri.jiit@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Atri Sharma <atri.jiit@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Noah Misch <noah@leadboat.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Jim Nasby <jim@nasby.net>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Andres Freund <andres@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Peter Geoghegan <pg@heroku.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Bruce Momjian <bruce@momjian.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Bruce Momjian <bruce@momjian.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Alvaro Herrera <alvherre@2ndquadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Robert Haas <robertmhaas@gmail.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Tom Lane <tgl@sss.pgh.pa.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Heikki Linnakangas <hlinnakangas@vmware.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Bruce Momjian <bruce@momjian.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Heikki Linnakangas <hlinnakangas@vmware.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Bruce Momjian <bruce@momjian.us>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
Re: ALTER TABLE lock strength reduction patch is unsafe Simon Riggs <simon@2ndQuadrant.com>
On 03/04/2014 11:43 AM, Andres Freund wrote:
> On March 4, 2014 8:39:55 PM CET, Simon Riggs  wrote:
>> I was going to add an option to increase lock level, but I can't see
>> why you'd want it even. The dumps are consistent...
> 
> Mvcc scans only guarantee that individual scans are consistent, not that separate scans are. Each individual scan takes a new snapshot if there's been ddl.
> 
> Andres
> 

I thought that we were sharing the same snapshot, for parallel dump?

-- 
Josh Berkus
PostgreSQL Experts Inc.
http://pgexperts.com


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