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AW: relation ### modified while in use

From: Zeugswetter Andreas SB <ZeugswetterA(at)wien(dot)spardat(dot)at>
To: "'Hiroshi Inoue'" <Inoue(at)tpf(dot)co(dot)jp>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: AW: relation ### modified while in use
Date: 2000-11-03 14:05:27
Message-ID: (view raw, whole thread or download thread mbox)
Lists: pgsql-hackers
> > The problem at hand is that
> > a plan may be invalidated before it is even finished building.  Do you
> > expect the parse-rewrite-plan-execute pipeline to be prepared to back up
> > and restart if we notice a relation schema change report halfway down the
> > process? 

Yes, during the processing "of one single statement", (and this includes
the parse/plan phase) we will need to hold a shared lock from the first access,
as by our previous discussion.


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