Re: max_standby_delay considered harmful

On Sat, May 8, 2010 at 3:40 PM, Bruce Momjian <bruce@momjian.us> wrote:
> Robert Haas wrote:
>> On Sat, May 8, 2010 at 2:48 PM, Bruce Momjian <bruce@momjian.us> wrote:
>> > I think the concensus is to change this setting to a boolean. ?If you
>> > don't want to do it, I am sure we can find someone who will.
>>
>> I still think we should revert to Tom's original proposal.
>
> And Tom's proposal was to do it on WAL slave arrival time?  If we could
> get agreement from everyone that that is the proper direction, fine, but
> I am hearing things like plugins, and other complexity that makes it
> seem we are not getting closer to an agreed solution, and without
> agreement, the simplest approach seems to be just to remove the part we
> can't agree upon.
>
> I think the big question is whether this issue is significant enough
> that we should ignore our policy of no feature design during beta.

Tom's proposal was basically to define recovery_process_lock_timeout.
The recovery process would wait X seconds for a lock, then kill
whoever held it.  It's not the greatest knob in the world for the
reasons already pointed out, but I think it's still better than a
boolean and will be useful to some users.  And it's pretty simple.

-- 
Robert Haas
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