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From: Bruce Momjian <bruce@momjian.us>
Message-Id: <201007010233.o612XJX09768@momjian.us>
Subject: Re: typo in release note
In-Reply-To: <AANLkTilW4L-oiZ4r5uiFAB0Q3cZkKzRli49wAyU5xCRi@mail.gmail.com>
To: Robert Haas <robertmhaas@gmail.com>
Date: Wed, 30 Jun 2010 22:33:19 -0400 (EDT)
CC: Tom Lane <tgl@sss.pgh.pa.us>, Fujii Masao <masao.fujii@gmail.com>,
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Robert Haas wrote:
> On Thu, Jun 10, 2010 at 10:16 AM, Tom Lane <tgl@sss.pgh.pa.us> wrote:
> > Robert Haas <robertmhaas@gmail.com> writes:
> >> On Thu, Jun 10, 2010 at 4:00 AM, Fujii Masao <masao.fujii@gmail.com> wrote:
> >>> The release note says "Allow continuous archive (WAL) files
> >>> to be streamed to a standby system" about SR. But no archive
> >>> files are streamed in SR. So we should get rid of the word
> >>> "archive" from that sentence? Here is the patch.
> >
> >> I don't think that reads very well. ?Possibly we could remove
> >> "continuous archive" as a whole, but I don't think we can remove one
> >> word and keep the other.
> >
> > I'm inclined to think that "continuous archiving" was meant. ?At least
> > that's the phrase that is used in chapter 24.
> 
> Yeah, probably - but I think what Fujii-san is concerned about is
> whether streaming replication is a subset of continuous archiving -
> the files never actually get "archived".

Fujii-san is absolutely right.  The original wording assumed streaming
replication and hot standby were a subset of continuous archiving, but I
later realized that you do not need to enable continuous archiving to do
use them, particularly with a sufficiently large wal_keep_segments:

	http://momjian.us/main/blogs/pgblog/2010.html#June_16_2010

Attached patch applied.

-- 
  Bruce Momjian  <bruce@momjian.us>        http://momjian.us
  EnterpriseDB                             http://enterprisedb.com

  + None of us is going to be here forever. +

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Index: doc/src/sgml/release-9.0.sgml
===================================================================
RCS file: /cvsroot/pgsql/doc/src/sgml/release-9.0.sgml,v
retrieving revision 2.37
diff -c -c -r2.37 release-9.0.sgml
*** doc/src/sgml/release-9.0.sgml	30 Jun 2010 14:25:24 -0000	2.37
--- doc/src/sgml/release-9.0.sgml	1 Jul 2010 02:29:52 -0000
***************
*** 398,404 ****
      <itemizedlist>
       <listitem>
        <para>
!        Allow continuous archive standby systems to accept read-only queries
         (Simon Riggs, Heikki Linnakangas)
        </para>
  
--- 398,404 ----
      <itemizedlist>
       <listitem>
        <para>
!        Allow a standby system to accept read-only queries
         (Simon Riggs, Heikki Linnakangas)
        </para>
  
***************
*** 412,418 ****
  
       <listitem>
        <para>
!        Allow continuous archive (<acronym>WAL</>) files to be streamed to a
         standby system (Fujii Masao, Heikki Linnakangas)
        </para>
  
--- 412,418 ----
  
       <listitem>
        <para>
!        Allow write-ahead log (<acronym>WAL</>) files to be streamed to a
         standby system (Fujii Masao, Heikki Linnakangas)
        </para>
  

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