Re: "ERROR: could not read block 6 ...: read only 0 of 8192 bytes" after autovacuum cancelled

Tom Lane wrote:
> Alvaro Herrera <alvherre@commandprompt.com> writes:
> > Tom Lane wrote:
> >> I wonder whether we shouldn't extend this into VACUUM FULL too, to
> >> prevent cancel once it's done that internal commit.  It would fix
> >> the "PANIC: can't abort a committed transaction" problem V.F. has.
> 
> > Hmm, it seems to work.  The attached is for 8.1.
> 
> Looks OK, but please update the comment right before the
> RecordTransactionCommit, along the lines of "We prevent cancel
> interrupts after this point to mitigate the problem that you
> can't abort the transaction now".

BTW I'm thinking in backpatching this all the way back to 7.4 -- are
we agreed on that?

-- 
Alvaro Herrera                                http://www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.