Tom Lane wrote:
> I see that lazy_vacuum_rel() truncates the heap before it does vacuuming
> of the free space map.  Once upon a time this wouldn't have mattered,
> but now it means that cancel interrupts are likely to be ignored for
> the duration of FreeSpaceMapVacuum().  Is that really necessary?
> Would it be okay to swap the two steps?

How would it matter?  Interrupts are not enabled until the transaction
is committed anyway, which must happen after both things have finished ..

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

In response to

• Order of operations in lazy_vacuum_rel at 2010-02-08 17:29:39 from Tom Lane

Responses

• Re: Order of operations in lazy_vacuum_rel at 2010-02-08 17:47:07 from Tom Lane

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