Re: Refactoring the checkpointer's fsync request queue

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От Robert Haas
Тема Re: Refactoring the checkpointer's fsync request queue
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Msg-id CA+TgmobdCuF2xNvrL_6H3CzvZsc7nVJbLvd-SL6DSjj++x7trw@mail.gmail.com
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Ответ на Re: Refactoring the checkpointer's fsync request queue  (Shawn Debnath <sdn@amazon.com>)
Ответы Re: Refactoring the checkpointer's fsync request queue
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On Fri, Mar 1, 2019 at 3:35 PM Shawn Debnath <sdn@amazon.com> wrote:
> On Fri, Mar 01, 2019 at 03:03:19PM -0500, Robert Haas wrote:
> > On Fri, Mar 1, 2019 at 2:36 PM Shawn Debnath <sdn@amazon.com> wrote:
> > > I disagree, at least with combining and retaining enums. Encoding all
> > > the possible request types with the current, planned and future SMGRs
> > > would cause a sheer explosion in the number of enum  values.
> >
> > How big of an explosion would it be?
>
> 4 enum values x # of smgrs; currently md, soon undo and slru so 12 in
> total. Any future smgr addition will expand this further.

I thought the idea was that each smgr might have a different set of
requests.  If they're all going to have the same set of requests then
I agree with you.

-- 
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company


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