Horton

Re: Postgres 11 release notes

Amit Langote <amitlangote09@gmail.com>

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From: Amit Langote <amitlangote09@gmail.com>
To: Bruce Momjian <bruce@momjian.us>
Cc: Amit Langote <Langote_Amit_f8@lab.ntt.co.jp>, Alvaro Herrera <alvherre@2ndquadrant.com>, jkatz@postgresql.org, Michael Banck <michael.banck@credativ.de>, PostgreSQL-development <pgsql-hackers@postgresql.org>
Date: 2018-09-29T07:28:13Z
Lists: pgsql-hackers 
On Fri, Sep 28, 2018 at 7:24 PM Bruce Momjian <bruce@momjian.us> wrote:
> On Fri, Sep 28, 2018 at 10:21:16AM +0900, Amit Langote wrote:
> > On 2018/09/27 23:24, Alvaro Herrera wrote:
> > > On 2018-Sep-27, Amit Langote wrote:
> > >
> > >> Sorry I couldn't reply sooner, but the following of your proposed text
> > >> needs to be updated a bit:
> > >>
> > >> +       <listitem>
> > >> +        <para>
> > >> +         Having a "default" partition for storing data that does not match a
> > >> +         partition key
> > >> +        </para>
> > >> +       </listitem>
> > >>
> > >> I think "does not match a partition key" is not accurate.  Description of
> > >> default partitions further below in the release notes says this:
> > >>
> > >> "The default partition can store rows that don't match any of the other
> > >> defined partitions, and is searched accordingly."
> > >>
> > >> So, we could perhaps write it as:
> > >>
> > >> Having a "default" partition for storing data that does not match any of
> > >> the remaining partitions
> > >
> > > Yeah, I agree that "a partition key" is not the right term to use there
> > > (and that term is used in the press release text also).  However I don't
> > > think "remaining" is the right word there either, because it sounds as
> > > if you're removing something.
> > >
> > > For the Spanish translation of the press release, we ended up using the
> > > equivalent of "for the data that does not match any other partition".
> >
> > Yeah, "any other partition" is what the existing description uses too, so:
> >
> > Having a "default" partition for storing data that does not match any
> > other partition
>
> Uh, what text are you talkinga about?  I see this text in the release
> notes since May:
>
>         The default partition can store rows that don't match any of the
>         other defined partitions, and is searched accordingly.

I was commenting on the Jonathan's patch upthread [1] whereby he
proposed to add a line about the default partition feature in the
major partitioning enhancements section at the top.

The existing text that you'd added when creating the release notes is fine.

> The press release?

Yeah, Alvaro pointed out that the press release has inaccurate text
about the default partition, but that's a separate issue, which I was
unaware of.

Thanks,
Amit

[1] https://www.postgresql.org/message-id/dcdbb9e9-cde2-fb78-fdb6-76d672d08dbc%40postgresql.org

Commits

  1. doc: update PG 11 release notes

  2. Fix misspelled pg_trgm contrib name in PostgreSQL 11 release notes

  3. Doc: clarify release note text about v11's new window function features.

  4. Improve wording of release notes item

  5. Fix typos in release notes

  6. Doc: preliminary list of PG11 major features.

  7. Make numeric power() handle NaNs according to the modern POSIX spec.

  8. Various improvements of skipping index scan during vacuum technics

  9. Revert back-branch changes in power()'s behavior for NaN inputs.

  10. Avoid wrong results for power() with NaN input on more platforms.

  11. Avoid wrong results for power() with NaN input on some platforms.

  12. Skip full index scan during cleanup of B-tree indexes when possible

  13. Rewrite the code that applies scan/join targets to paths.

  14. Postpone generate_gather_paths for topmost scan/join rel.

  15. Add casts from jsonb

  16. Make plpgsql use its DTYPE_REC code paths for composite-type variables.

  17. Don't allow VACUUM VERBOSE ANALYZE VERBOSE.

  18. Pass InitPlan values to workers via Gather (Merge).

  19. Account for the effect of lossy pages when costing bitmap scans.

  20. Allow no-op GiST support functions to be omitted.

  21. Rearm statement_timeout after each executed query.

  22. Push limit through subqueries to underlying sort, where possible.