[pgpool-hackers: 406] Obosoleting parallel query

Tatsuo Ishii ishii at postgresql.org
Fri Nov 15 14:17:42 JST 2013


I'm thinking about a future road map of pgpool-II and there's one
thing that I would like to remove, rather than add: parallel query.

The reason I would like to obsolete parallel query is:

1) very few users

2) it has severe restrictions such as certain queries cannot be used,
   nor in extended protocol (i.e. JDBC)

3) nobody want to work on this

4) pain to upgrade to newer version of PostgreSQL's SQL parser (yes,
   pgpool-II uses PostgreSQL's parser code).

In short, parallel query gives us small gain comparing with the work
needed to maintain/enhance. So I would like to obsolete parallel query
in the future pgpool-II release.

Tatsuo Ishii
SRA OSS, Inc. Japan
English: http://www.sraoss.co.jp/index_en.php
Japanese: http://www.sraoss.co.jp

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