Re: strange nbtree corruption report - Mailing list pgsql-hackers

From Tom Lane
Subject Re: strange nbtree corruption report
Date
Msg-id 1637.1322530801@sss.pgh.pa.us
Whole thread Raw
In response to Re: strange nbtree corruption report  (Alvaro Herrera <alvherre@commandprompt.com>)
Responses Re: strange nbtree corruption report
List pgsql-hackers
Alvaro Herrera <alvherre@commandprompt.com> writes:
> I wonder if it would be worthwhile to build some sort of tool to scan
> the heap and ensure that there are index entries for all heap items,
> just to test the hypothesis.  Not that this would enlighten on the
> source of the actual problem.

Seems like the hypothesis could be proven or disproven just by counting
the heap and index entries while the DB is otherwise idle.  It used to
be that VACUUM VERBOSE was sufficient for that sort of cross-check ...
but I'm not totally sure what push-ups are required nowadays to prevent
it from deciding that it's smarter than you are so it needn't scan the
whole table.  Is VACUUM FREEZE VERBOSE still trustworthy for this?
        regards, tom lane


pgsql-hackers by date:

Previous
From: Andres Freund
Date:
Subject: Re: CommitFest 2011-11 Post-Tryptophan Progress Report
Next
From: Andres Freund
Date:
Subject: Re: Avoiding repeated snapshot computation