| From: | Andres Freund <andres(at)anarazel(dot)de> |
|---|---|
| To: | Michael Paquier <michael(at)paquier(dot)xyz> |
| Cc: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, Alvaro Herrera <alvherre(at)alvh(dot)no-ip(dot)org>, Fujii Masao <masao(dot)fujii(at)gmail(dot)com>, PostgreSQL-development <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: reloption to prevent VACUUM from truncating empty pages at the end of relation |
| Date: | 2018-04-18 02:16:52 |
| Message-ID: | 20180418021652.aeesg7jrvu3ibcun@alap3.anarazel.de |
| Views: | Raw Message | Whole Thread | Download mbox | Resend email |
| Thread: | |
| Lists: | pgsql-hackers |
On 2018-04-18 10:46:51 +0900, Michael Paquier wrote:
> On Tue, Apr 17, 2018 at 06:13:31PM -0700, Andres Freund wrote:
> > Not sure what you mean?
>
> Do you need help on it? I suggest that I could undertake the proposed
> patch and submit it earlier in the development cycle of v12.
I think it's at the very least two months of serious development work to
get it into a state ready for submission. And a good chunk of that not
even sketched out. Replacing the hashtable is the easy part, the memory
management (Complicated due to lock-freeness. I'm thinking of using a
variant of epoch based reclamation) isn't really there, the management
of shared "open relations" state are the hard parts...
So yes, I could use help on it, but it'll be a lot of actual design and
investigatory work.
Greetings,
Andres Freund
| From | Date | Subject | |
|---|---|---|---|
| Next Message | Amit Langote | 2018-04-18 02:52:41 | Re: pruning disabled for array, enum, record, range type partition keys |
| Previous Message | Wood, Dan | 2018-04-18 02:07:17 | VM map freeze corruption |