Re: Parallel Full Hash Join - Mailing list pgsql-hackers

From Greg Nancarrow
Subject Re: Parallel Full Hash Join
Date
Msg-id CAJcOf-dMBcvMHOe+5RoM5Jg54cg8U4+nWs5mTCPcb5nD3BJU4w@mail.gmail.com
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In response to Parallel Full Hash Join  (Thomas Munro <thomas.munro@gmail.com>)
Responses Re: Parallel Full Hash Join
List pgsql-hackers
On Sat, Mar 6, 2021 at 12:31 PM Thomas Munro <thomas.munro@gmail.com> wrote:
>
> On Tue, Mar 2, 2021 at 11:27 PM Thomas Munro <thomas.munro@gmail.com> wrote:
> > On Fri, Feb 12, 2021 at 11:02 AM Melanie Plageman
> > <melanieplageman@gmail.com> wrote:
> > > I just attached the diff.
> >
> > Squashed into one patch for the cfbot to chew on, with a few minor
> > adjustments to a few comments.
>
> I did some more minor tidying of comments and naming.  It's been on my
> to-do-list to update some phase names after commit 3048898e, and while
> doing that I couldn't resist the opportunity to change DONE to FREE,
> which somehow hurts my brain less, and makes much more obvious sense
> after the bugfix in CF #3031 that splits DONE into two separate
> phases.  It also pairs obviously with ALLOCATE.  I include a copy of
> that bugix here too as 0001, because I'll likely commit that first, so
> I rebased the stack of patches that way.  0002 includes the renaming I
> propose (master only).  Then 0003 is Melanie's patch, using the name
> SCAN for the new match bit scan phase.  I've attached an updated
> version of my "phase diagram" finger painting, to show how it looks
> with these three patches.  "scan*" is new.

Patches 0002, 0003 no longer apply to the master branch, seemingly
because of subsequent changes to pgstat, so need rebasing.

Regards,
Greg Nancarrow
Fujitsu Australia



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