Re: Read-ahead and parallelism in redo recovery - Mailing list pgsql-hackers

From Tom Lane
Subject Re: Read-ahead and parallelism in redo recovery
Date
Msg-id 3103.1204301271@sss.pgh.pa.us
Whole thread Raw
In response to Re: Read-ahead and parallelism in redo recovery  ("Florian G. Pflug" <fgp@phlo.org>)
List pgsql-hackers
"Florian G. Pflug" <fgp@phlo.org> writes:
> I know that Simon has some ideas about parallel restored, though I don't
> know how he wants to solve the dependency issues involved. Perhaps by
> not parallelizing withon one table or index...

I think we should be *extremely* cautious about introducing any sort of
parallelism or other hard-to-test behavior into xlog recovery.  Bugs
in that area will by definition bite people at the worst possible time.
And we already know that we don't have very good testing ability for
xlog recovery, because some pretty nasty bugs have gone undetected
for long periods.
        regards, tom lane


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