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Re: Why do we have a WAL record for CLOG page extension? - Mailing list pgsql-patches

From Tom Lane
Subject Re: Why do we have a WAL record for CLOG page extension?
Date
Msg-id 17347.1149605999@sss.pgh.pa.us
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In response to Why do we have a WAL record for CLOG page extension?  (Simon Riggs <simon@2ndquadrant.com>)
Responses Re: Why do we have a WAL record for CLOG page extension?  (Simon Riggs <simon@2ndquadrant.com>)
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Simon Riggs <simon@2ndquadrant.com> writes:
> Why do we have a WAL record for CLOG page extension?

Think of it as being a substitute for a full-page image, or perhaps the
init-bit in heap-insert records is the closest analogy.  Your patch is
unworkable because it provides no means for recovering from
corrupt-on-disk clog pages.

            regards, tom lane

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