Re: Is it correct to update db state in control file as "shutting down" during end-of-recovery checkpoint?

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От Bossart, Nathan
Тема Re: Is it correct to update db state in control file as "shutting down" during end-of-recovery checkpoint?
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Msg-id 9D3CE856-9062-4D91-85E3-B222FE70992B@amazon.com
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Ответ на Re: Is it correct to update db state in control file as "shutting down" during end-of-recovery checkpoint?  (Michael Paquier <michael@paquier.xyz>)
Ответы Re: Is it correct to update db state in control file as "shutting down" during end-of-recovery checkpoint?  (Michael Paquier <michael@paquier.xyz>)
Re: Is it correct to update db state in control file as "shutting down" during end-of-recovery checkpoint?  (Kyotaro Horiguchi <horikyota.ntt@gmail.com>)
Список pgsql-hackers
On 1/24/22, 9:16 PM, "Michael Paquier" <michael@paquier.xyz> wrote:
> Now, I also find confusing the state of CreateCheckpoint() once this
> patch gets applied.  Now the code and comments imply that an
> end-of-recovery checkpoint is a shutdown checkpoint because they
> perform the same actions, which is fine.  Could it be less confusing
> to remove completely the "shutdown" variable instead and replace those
> checks with "flags"?  What the patch is doing is one step in this
> direction.

I looked into removing the "shutdown" variable in favor of using
"flags" everywhere, but the patch was quite messy and repetitive.  I
think another way to make things less confusing is to replace
"shutdown" with an inverse variable called "online."  The attached
patch does it this way.

Nathan


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