Re: Reduce pinning in btree indexes - Mailing list pgsql-hackers

From Simon Riggs
Subject Re: Reduce pinning in btree indexes
Date
Msg-id CA+U5nMLPk8xtR3ABebOMu=AW-y0Rgyr6aVv7gHuFeGyocPYTDg@mail.gmail.com
Whole thread Raw
In response to Reduce pinning in btree indexes  (Kevin Grittner <kgrittn@ymail.com>)
Responses Re: Reduce pinning in btree indexes  (Robert Haas <robertmhaas@gmail.com>)
List pgsql-hackers
On 15 February 2015 at 00:19, Kevin Grittner <kgrittn@ymail.com> wrote:

> What they wanted was what happened in the other database product --
> if a snapshot got sufficiently old that cleaning up the MVCC data
> was a problem *and* the snapshot was used again *and* it read a
> page which had been modified far enough back that it was not
> possible to return correct data, then they wanted to receive a
> "snapshot too old" error.  I wrote a patch to do that...

So, please lets see the patch. It seems useful for core Postgres.

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



pgsql-hackers by date:

Previous
From: Svenne Krap
Date:
Subject: Re: WIP Patch for GROUPING SETS phase 1
Next
From: Jim Nasby
Date:
Subject: Re: Proposal : REINDEX xxx VERBOSE