Skip site navigation (1) Skip section navigation (2)

Re: parallel restore

From: Simon Riggs <simon(at)2ndQuadrant(dot)com>
To: Andrew Dunstan <andrew(at)dunslane(dot)net>
Cc: PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: parallel restore
Date: 2009-01-04 17:44:21
Message-ID: 1231091061.4032.304.camel@ebony.2ndQuadrant (view raw or flat)
Thread:
Lists: pgsql-hackers
On Mon, 2008-12-29 at 18:42 -0500, Andrew Dunstan wrote:
> Attached is the latest parallel restore patch. I think this is getting 
> fairly close.
> 
> Includes help text, docco and some extra error checking.

Very brief review.

Hopefully the --truncate-before-load option works in both parallel mode
and data-only mode?

Few typos on docs.

No README or comments explain how the patch works. This part of the code
was probably most opaque already, so its really needed unfortunately. 

* I'm particularly interested in error handling, for example if one
thread hits a deadlock, gets accidentally killed by user, hits bug in
custom add-in code etc..

* Earlier bugs with pre/post data were related to missing objects or
putting them in wrong groups. Documenting that will help identify
errors.

Few starnge names, sorry:

work_is_being_done --> work_in_progress
_inhibit_data?? --> _skip_data??
prestored --> parallel_restored
restore_one_te --> restore_TocEntry

Would like ability to increase/decrease number of parallel threads as
restore progresses. Experience says you always pick the wrong number
and/or situation changes while in progress.

-- 
 Simon Riggs           www.2ndQuadrant.com
 PostgreSQL Training, Services and Support


In response to

pgsql-hackers by date

Next:From: Tom LaneDate: 2009-01-04 17:49:32
Subject: Re: New patch for Column-level privileges
Previous:From: Markus WannerDate: 2009-01-04 17:29:45
Subject: Re: New patch for Column-level privileges

Privacy Policy | About PostgreSQL
Copyright © 1996-2014 The PostgreSQL Global Development Group