Re: [HACKERS] Proposal: generic WAL compression

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От Stephen Frost
Тема Re: [HACKERS] Proposal: generic WAL compression
Дата
Msg-id 20180207184254.GR2416@tamriel.snowman.net
обсуждение исходный текст
Ответ на Re: [HACKERS] Proposal: generic WAL compression  (Markus Nullmeier <dq124@uni-heidelberg.de>)
Ответы Re: [HACKERS] Proposal: generic WAL compression
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Greetings,

* Markus Nullmeier (dq124@uni-heidelberg.de) wrote:
> On 07/02/18 18:31, David Steele wrote:
>
> > This proposal is still in need of review and hasn't really gotten it in
> > the last few CFs.
>
> Agreed.
>
> > Since the feature does not seem like a good fit for the last CF of PG11
> > I am marking it Returned with Feedback.
>
> Is there any chance that it may be still resubmitted / reopened for the
> March CF?

Of course, you're certainly welcome to resubmit it to a future CF.  As
we're getting close to the end of this release cycle, I tend to think it
would be appropriate to submit it for the post-11 CF rather than the one
in March.

> Actually right now I am in the process of reviewing it, for it would be
> really useful for my "OUZO" project (a fork of the RUM access method).

Glad to hear that you're continuing to work on it.

> One general comment I can already make is that enabling compression
> should be made optional, which appears to be a small and easy addition
> to the generic WAL API.

The question would be- is there a way for us to determine when it should
be enabled or not enabled, or do we have to ask the user to tell us?
Asking the user is something we'd really not do unless we absolutely
have to.  Much better is if we can figure out when it's best to enable
or disable (or use/not use) based on some criteria and do so
automatically.

Thanks!

Stephen

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