| From: | ITAGAKI Takahiro <itagaki(dot)takahiro(at)oss(dot)ntt(dot)co(dot)jp> |
|---|---|
| To: | Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> |
| Cc: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, Simon Riggs <simon(at)2ndquadrant(dot)com> |
| Subject: | Re: Immediate shutdown and system(3) |
| Date: | 2009-03-03 03:43:37 |
| Message-ID: | 20090303123550.8F21.52131E4D@oss.ntt.co.jp |
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| Lists: | pgsql-hackers |
Heikki Linnakangas <heikki(dot)linnakangas(at)enterprisedb(dot)com> wrote:
> 1. Implement a custom version of system(3) using fork+exec that let's us
> trap SIGQUIT and send e.g SIGTERM or SIGINT to the child instead. It
> might be a bit tricky to get this right in a portable way; Windows would
> certainly need a completely separate implementation.
I think the custom system() approach is the most ideal plan for us because
it could open the door for faster recovery; If there were an asynchronous
version of system(), startup process could parallelly execute both
restoring archived wal files and redoing operations in them.
Regards,
---
ITAGAKI Takahiro
NTT Open Source Software Center
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