Re: Block-level CRC checks

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Alvaro Herrera <alvherre(at)commandprompt(dot)com>
Cc: Martijn van Oosterhout <kleptog(at)svana(dot)org>, Gregory Stark <stark(at)enterprisedb(dot)com>, Greg Stark <greg(dot)stark(at)enterprisedb(dot)com>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org>
Subject: Re: Block-level CRC checks
Date: 2008-11-12 14:16:07
Message-ID: 11857.1226499367@sss.pgh.pa.us
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Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> However, your idea suggests something else that we could do to improve
> the patch: skip the ItemId->lp_flags during the CRC calculation. This
> would mean we wouldn't need to WAL-log those.

What!? In most cases those bits are critical data, not hints.

regards, tom lane

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