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Always interested in offers/projects/new ideas. Eclectic experience in fields like: numerical computing; Python web; Java enterprise; functional languages; GPGPU; SQL databases; etc. Based in Santiago, Chile; telecommute worldwide. CV; email.

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Lepl parser for Python.

Colorless Green.

Photography around Santiago.

SVG experiment.

Professional Portfolio

Calibration of seismometers.

Data access via web services.

Cache rewrite.

Extending OpenSSH.

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Re: Python's sad, unimaginative Enum; Some explanation; Printing binary trees sideways; About "Python's sad, unimaginative Enum"; Atoms in python; Some good feedback here; Frustration Understood; I agree with you #nt; What would be imaginative?; Re: Enum; this is fucking useless; Enum; Python's sad, unimaginative Enum; Possible Fix; Work, Exhaustion, Vacation; VirtualBox with Centos 6.3 to 6.4, client; Matasano - Programming Lessons Learned; PDF to HTML; Alternate Substitution; Why RSA Works; Trigger; Dreaming of Death; Example: Tracing; Using Coroutines In Protocol Simulations; Python 3.3 Only; Pure Python SHA1 and MD4 Implementations; Ubuntu on VirtualBox; Starting TOR as a service on OpenSuse 12.3; 1001 Albums; Using fail2ban on OpenSuse 12.3; PPPoE on OpenSuse 12.3; Good Article on Unified Physics; It's Police (Carabineros); Linux Software for Listening to and Exploring Music; Android is Pretty Bad; Lucky Number; 3D Printing for Casting; Cover Art for MPDroid; Who'd a thought the French were so bigoted?; PS Input Signal; Small Problem with Roksan K2 Amp; Roksan K2 Amp + ATC SCM7 Speakers; Do What Makes Sense; Re: Arguing About Tests, Still; Arguing About Tests, Still; Images; Good Article on NY Drummers; Related Bug Report; Getting Python 3.3 and Virtualenv Working in OpenSuse 12.3; How I Am; Awesome video about digital audio; The Difference Between Dimensional and Normalized Databases; The rise of the new Chinese bogeyman; Updated Syntax; Very First Steps to C-ORM; The Ideal User Interface For Music Exploration; Can The Republicans Be Saved?; Rate Limiting Calls to EchoNest; Mods to Cache; Comparing UYKFG and UYKFD/E/F; Someone Else is Concerned; EchoNest-based Playlist Generator for MPD; Example Voting Results; A Heavyweight Python Cache; Identifying Artists with EchoNest; Notes on Pregalex / Pregabalina / Lyrica; The Neil Cowley Trio; Drake - Make for Data; A Reliable Python Web Service; Useful Python Date/Time Library?; Need to Sleep, But this is Good; Command Line Set Difference; Little Details...; Linux Command Line Tricks; AutoTools Tutorial; Hangman Tactics; A Tor Proxy Embedded In A Web Page; Tree (Nested Dicts) in Python; Sleeping at Parties; I Know Someone Who Hurts Other People; Light and Tea; Description of the LCS35 Time Capsule Crypto-Puzzle; Re: I can relate to that ...; I can relate to that ...; Re: It's 2012 Why Does My IDE Suck?; My Own Alternative Medicine; Nice explanation of SVM; Why and How Writing Crypto is Hard; Re: It's 2012 Why Does My IDE Suck?; Incremental Regular Expressions; BBC Map Confused at Pole; Social Media: Ground Zero in the Culture War; My Visit to the Psycho Doc; Learning Modern 3D Graphics Programming; Hope you got some crackers to go with the cheese; Re: But how easy would it be ...; But how easy would it be ...; Powerline Freq Fingerprinting of Audio; The Folly of Scientism; Cheese - Because You're Going to Die Anyway; Another GPU Success - PyCUDA, Cross-Correlations

Updating Wikipedia (Mediawiki) to use Postgres 8.3

From: "andrew cooke" <andrew@...>

Date: Sun, 13 Jul 2008 17:39:18 -0400 (CLT)

This was rather painful.  I can't given an exact walkthrough because it
was one of the messy iterative "push this on the stack of alternatives"
problems, but the basic idea is:

- Copy your 8.2 data directory somewhere else
- Install 8.3
- Point 8.3 at you old data and do a dump of the Wiki database
- Install Mediawiki 1.12 (this has fixes for Postgres 8.3)
- Create a new database using Mediawiki 1.12 and Postgres 8.3
- Dump the (new, empty) 8.3 database
- By hand, edit the 8.3 database dump so that it includes the data
  from the 8.2 database dump (except for the revision table and the
  the tables related to the old text search stuff)
- Delete the 8.3 database and import from the (hand-merged) dump

In other words, for the tables that are in the 8.3 database, use the data
from the 8.2 database.

I did try the various methods described on blogs, and using various
scripts in the maintenance directory.  But only the above worked.  Given
the poos support for Postgres with Mediawiki it's probably worth moving to
MySQL (although last time I tried the XML dump didn't work with Postgres,
so I'm not sure how)

Andrew

Maybe too Negative?

From: "andrew cooke" <andrew@...>

Date: Tue, 15 Jul 2008 07:22:03 -0400 (CLT)

Perhaps I was too negative above.  In general Mediawiki works perfectly
(absolutely no previous problems) with Postgres.  However, in changing
from 8.2 to 8.3 Postgres changed how they handle text searches, which are
critical for Mediaiwik and so meant "significant" changes to the database.

So hopefully this was an exception.

Andrew

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