| From: | Andreas Pflug <pgadmin(at)pse-consulting(dot)de> |
|---|---|
| To: | PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | pg_relation_size locking |
| Date: | 2005-12-12 11:32:51 |
| Message-ID: | 439D5FE3.1010702@pse-consulting.de |
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| Lists: | pgsql-hackers |
Until recently, pg_relation_size used SearchSysCache to locate the
relation to examine, and calculated the file location from that
information. Starting with dbsize.c V1.5 (committed after Beta2),
relation_open(.., AccessShareLock) is used. This is very unfortunate
because it will not allow to observe a table growing while it is
populated, e.g. with a lengthy COPY; pg_relation_size will be blocked.
After reverting to 1.4, everything was fine again.
Can we have this reverted/fixed?
Regards,
Andreas
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