Currently, the documentation is based on Wiki. After releases, we need to keep some document snapshot available in online. The wiki page is not good for this purpose.
So, I would like to suggest that user documentation moves to static htmls and keep developer document in the current wiki. In addition, we should keep static htmls for each version in Tajo site.
This patch contains a markdown document used to generate static user document html for 0.2 and 0.8, and update the site for this change.
You can see the draft at http://people.apache.org/~hyunsik/tajo/tajo-0.2.0-doc.html.