Horton

Re: Speedup twophase transactions

Simon Riggs <simon@2ndquadrant.com>

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From: Simon Riggs <simon@2ndQuadrant.com>
To: Stas Kelvich <s.kelvich@postgrespro.ru>
Cc: Alvaro Herrera <alvherre@2ndquadrant.com>, pgsql-hackers <pgsql-hackers@postgresql.org>
Date: 2016-01-09T18:27:13Z
Lists: pgsql-hackers 
On 9 January 2016 at 12:26, Stas Kelvich <s.kelvich@postgrespro.ru> wrote:


> I’ve updated patch and wrote description of thighs that happens
> with 2PC state data in the beginning of the file. I think now this patch
> is well documented,
> but if somebody points me to places that probably requires more detailed
> description I’m ready
> to extend that.
>

Your comments say

  "In case of crash replay will move data from xlog to files, if
that hasn't happened before."

but I don't see that in code. Can you show me where that happens?

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

Commits

  1. Speedup 2PC recovery by skipping two phase state files in normal path

  2. Add tests for two-phase commit

  3. Improve grammar of message about two-phase state files.

  4. Speedup 2PC by skipping two phase state files in normal path