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Improve release notes per comments from Andres Freund.

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Make a bit more noise about the timeout-interrupt bug.  Also, remove the
release note entry for commit 423e1211a; that patch fixed a problem
introduced post-9.3.2, so there's no need to document it in the release
notes.
This commit is contained in:
Tom Lane 2014-02-16 12:03:54 -05:00
parent 56caaf195e
commit 8fd994e40c
1 changed files with 30 additions and 46 deletions
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doc/src/sgml/release-9.3.sgml
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@ -106,25 +106,6 @@ Branch: REL9_3_STABLE [fb47de2be] 2014-02-13 19:30:30 -0300
</para>
</listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [423e1211a] 2014-01-10 18:03:18 -0300
Branch: REL9_3_STABLE [a25c2b7c4] 2014-01-10 18:03:18 -0300
-->
<listitem>
<para>
Fix multixact freezing of tuples that predate
a <literal>pg_upgrade</> to 9.3
(&Aacute;lvaro Herrera)
</para>
<para>
This oversight would result in complaints such as <quote>ERROR:
MultiXactId 11415437 does no longer exist -- apparent wraparound</>.
</para>
</listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [11ac4c73c] 2013-12-18 13:45:51 -0300
@ -412,16 +393,23 @@ Branch: REL9_3_STABLE [e34acac62] 2014-01-16 23:14:57 +0200
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [214c7a4f0] 2014-02-01 16:21:23 -0500
Branch: REL9_3_STABLE [6f1a40773] 2014-02-01 16:21:30 -0500
Branch: REL9_2_STABLE [81b116d98] 2014-02-01 16:21:33 -0500
Branch: REL9_1_STABLE [03f06ff38] 2014-02-01 16:21:38 -0500
Branch: master [e8312b4f0] 2013-12-13 11:50:15 -0500
Branch: REL9_3_STABLE [478af9b79] 2013-12-13 11:50:25 -0500
-->
<listitem>
<para>
Fix race conditions in walsender shutdown logic and walreceiver
SIGHUP signal handler (Tom Lane)
Prevent timeout interrupts from taking control away from mainline
code unless <varname>ImmediateInterruptOK</> is set
(Andres Freund, Tom Lane)
</para>
<para>
This is a serious issue for any application making use of statement
timeouts, as it could cause all manner of strange failures after a
timeout occurred. We have seen reports of <quote>stuck</> spinlocks,
ERRORs being unexpectedly promoted to PANICs, unkillable backends,
and other misbehaviors.
</para>
</listitem>
@ -441,8 +429,23 @@ Branch: REL8_4_STABLE [458b20f2d] 2014-01-31 21:41:09 -0500
</para>
<para>
Ensure that signal handlers don't attempt to use
the process's <varname>MyProc</> pointer after it's no longer valid.
Ensure that signal handlers don't attempt to use the
process's <varname>MyProc</> pointer after it's no longer valid.
</para>
</listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [214c7a4f0] 2014-02-01 16:21:23 -0500
Branch: REL9_3_STABLE [6f1a40773] 2014-02-01 16:21:30 -0500
Branch: REL9_2_STABLE [81b116d98] 2014-02-01 16:21:33 -0500
Branch: REL9_1_STABLE [03f06ff38] 2014-02-01 16:21:38 -0500
-->
<listitem>
<para>
Fix race conditions in walsender shutdown logic and walreceiver
SIGHUP signal handler (Tom Lane)
</para>
</listitem>
@ -490,25 +493,6 @@ Branch: REL8_4_STABLE [d0070ac81] 2014-01-11 16:35:44 -0500
</para>
</listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e8312b4f0] 2013-12-13 11:50:15 -0500
Branch: REL9_3_STABLE [478af9b79] 2013-12-13 11:50:25 -0500
-->
<listitem>
<para>
Prevent timeout interrupts from taking control away from mainline
code unless <varname>ImmediateInterruptOK</> is set
(Andres Freund, Tom Lane)
</para>
<para>
This was initially reported as a <quote>stuck spinlock</> failure,
but many other misbehaviors are possible after a statement timeout.
</para>
</listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [74242c23c] 2013-12-05 12:48:28 -0500