From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
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To: | pgsql-hackers(at)postgresql(dot)org |
Subject: | Re: WAL & RC1 status |
Date: | 2001-03-03 00:21:57 |
Message-ID: | 5007.983578917@sss.pgh.pa.us |
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Lists: | pgsql-hackers |
ncm(at)zembu(dot)com (Nathan Myers) writes:
> It Seems to Me that after an orderly shutdown, the WAL files should be,
> effectively, slag -- they should contain no deltas from the current
> table contents. In practice that means the only part of the format that
> *should* matter is whatever it takes to discover that they really are
> slag.
> That *should* mean that, at worst, a change to the WAL file format should
> only require doing an orderly shutdown, and then (perhaps) running a simple
> program to generate a new-format empty WAL. It ought not to require an
> initdb.
Excellent point, considering that we were already thinking of making a
handy-dandy little utility to remove broken WAL files... Shouldn't take
much more than that to build something that also reformats pg_control.
Thanks for the suggestion!
regards, tom lane
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