Re: [HACKERS] Parallel tuplesort (for parallel B-Tree index creation) - Mailing list pgsql-hackers

From Thomas Munro
Subject Re: [HACKERS] Parallel tuplesort (for parallel B-Tree index creation)
Date
Msg-id CAEepm=3zu7=+J6rih0-xbHT2t2CuZFBw=jHT8o4N-kuo46L5Wg@mail.gmail.com
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In response to Re: [HACKERS] Parallel tuplesort (for parallel B-Tree index creation)  (Peter Geoghegan <pg@bowt.ie>)
List pgsql-hackers
On Fri, Nov 3, 2017 at 2:24 PM, Peter Geoghegan <pg@bowt.ie> wrote:
> Thomas Munro <thomas.munro@enterprisedb.com> wrote:
>> That way you don't have to opt in to BufFile's
>> double buffering and segmentation schemes just to get shared file
>> clean-up, if for some reason you want direct file handles.
>
> Is that something that you really think is possible?

It's pretty far fetched, but maybe shared temporary relation files
accessed via smgr.c/md.c?  Or maybe future things that don't want to
read/write through a buffer but instead want to mmap it.

-- 
Thomas Munro
http://www.enterprisedb.com


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