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Commit bf641d33 authored by Tom Lane's avatar Tom Lane
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First-draft release notes for 10.2. 

As usual, the release notes for other branches will be made by cutting
these down, but put them up for community review first.
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doc/src/sgml/release-10.sgml
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<!-- doc/src/sgml/release-10.sgml -->
<!-- See header comment in release.sgml about typical markup -->
<sect1 id="release-10-2">
<title>Release 10.2</title>
<formalpara>
<title>Release date:</title>
<para>2018-02-08</para>
</formalpara>
<para>
This release contains a variety of fixes from 10.1.
For information about new features in major release 10, see
<xref linkend="release-10"/>.
</para>
<sect2>
<title>Migration to Version 10.2</title>
<para>
A dump/restore is not required for those running 10.X.
</para>
<para>
However,
if you use <filename>contrib/cube</filename>'s <literal>~&gt;</literal>
operator, see the entry below about that.
</para>
<para>
Also, if you are upgrading from a version earlier than 10.1,
see <xref linkend="release-10-1"/>.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [9c2f0a6c3] 2017-12-14 18:20:47 -0800
Branch: REL_10_STABLE [1224383e8] 2017-12-14 18:20:48 -0800
Branch: REL9_6_STABLE [937494c0e] 2017-12-14 18:20:48 -0800
Branch: REL9_5_STABLE [32c0295b1] 2017-12-14 18:20:48 -0800
Branch: REL9_4_STABLE [4eff5a8c9] 2017-12-14 18:20:48 -0800
Branch: REL9_3_STABLE [387abe870] 2017-12-14 18:20:48 -0800
-->
<para>
Fix vacuuming of tuples that were updated while key-share locked
(Andres Freund, &Aacute;lvaro Herrera)
</para>
<para>
In some cases <command>VACUUM</command> would fail to remove such
tuples even though they are now dead, leading to assorted data
corruption scenarios.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [ad25a6b1f] 2018-02-01 15:23:45 -0500
Branch: REL_10_STABLE [b94988fad] 2018-02-01 15:31:31 -0500
-->
<para>
Fix failure to mark a hash index's metapage dirty after
adding a new overflow page, potentially leading to index corruption
(Lixian Zou, Amit Kapila)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [3b2787e1f] 2017-11-16 14:19:27 -0500
Branch: REL_10_STABLE [c8df4831e] 2017-11-16 15:24:19 -0500
Branch: REL9_6_STABLE [19648ce55] 2017-11-16 15:26:49 -0500
-->
<para>
Ensure that vacuum will always clean up the pending-insertions list of
a GIN index (Masahiko Sawada)
</para>
<para>
This is necessary to ensure that dead index entries get removed.
The old code got it backwards, allowing vacuum to skip the cleanup if
some other process were running it concurrently, thus risking
invalid entries being left behind in the index.
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [272c2ab9f] 2018-01-09 17:06:31 -0300
Branch: REL_10_STABLE [37dd11281] 2018-01-09 17:08:10 -0300
Branch: REL9_6_STABLE [012683866] 2018-01-09 17:07:47 -0300
Branch: REL9_5_STABLE [38a23790e] 2018-01-09 17:07:36 -0300
Branch: REL9_4_STABLE [c61879640] 2018-01-09 17:07:24 -0300
Branch: REL9_3_STABLE [469fa9ad6] 2018-01-09 17:07:00 -0300
-->
<para>
Fix inadequate buffer locking in some LSN fetches (Jacob Champion,
Asim Praveen, Ashwin Agrawal)
</para>
<para>
These errors could result in misbehavior under concurrent load.
The potential consequences have not been characterized fully.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [90947674f] 2018-01-12 12:24:50 -0500
Branch: REL_10_STABLE [d3ca1a6c3] 2018-01-12 12:24:50 -0500
Branch: REL9_6_STABLE [6520d4a96] 2018-01-12 12:24:50 -0500
Branch: REL9_5_STABLE [ff99d7761] 2018-01-12 12:24:50 -0500
-->
<para>
Fix incorrect query results from cases involving flattening of
subqueries whose outputs are used in <literal>GROUPING SETS</literal>
(Heikki Linnakangas)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [3ccdc6f9a] 2018-01-31 15:43:11 -0500
Branch: REL_10_STABLE [86fba2865] 2018-01-31 16:08:39 -0500
-->
<para>
Fix handling of list partitioning constraints for partition keys of
boolean or array types (Amit Langote)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [680d54050] 2018-01-12 15:46:37 -0500
Branch: REL_10_STABLE [55e5eb4d9] 2018-01-12 15:46:37 -0500
Branch: REL9_6_STABLE [c2a7044a5] 2018-01-12 15:46:37 -0500
Branch: REL9_5_STABLE [a99922f96] 2018-01-12 15:46:37 -0500
Branch: REL9_4_STABLE [8b0e5e7e7] 2018-01-12 15:46:38 -0500
Branch: REL9_3_STABLE [4e7170058] 2018-01-12 15:46:38 -0500
-->
<para>
Avoid unnecessary failure in a query on an inheritance tree that
occurs concurrently with some child table being removed from the tree
by <command>ALTER TABLE NO INHERIT</command> (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [54eff5311] 2018-01-02 19:16:16 -0300
Branch: REL_10_STABLE [6d2a9ae0e] 2018-01-02 19:16:16 -0300
Branch: REL9_6_STABLE [fb7b43903] 2018-01-02 19:16:16 -0300
Branch: REL9_5_STABLE [82f1c3b7d] 2018-01-02 19:16:16 -0300
Branch: REL9_4_STABLE [47a3a1317] 2018-01-02 19:16:16 -0300
-->
<para>
Fix spurious deadlock failures when multiple sessions are
running <command>CREATE INDEX CONCURRENTLY</command> (Jeff Janes)
</para>
</listitem>
<listitem>
<!--
Author: Teodor Sigaev <teodor@sigaev.ru>
Branch: master [ad337c76b] 2017-12-27 18:25:37 +0300
Branch: REL_10_STABLE [bdbf29aae] 2017-12-27 18:26:58 +0300
-->
<para>
During <command>VACUUM FULL</command>, update the table's size fields
in <structname>pg_class</structname> sooner (Amit Kapila)
</para>
<para>
This prevents poor behavior when rebuilding any hash indexes on the
table, since those use the <structname>pg_class</structname>
statistics to govern the initial hash size.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [c4c2885cb] 2017-12-22 12:08:06 -0500
Branch: REL_10_STABLE [c252ccda7] 2017-12-22 12:08:18 -0500
-->
<para>
Fix
<literal>UNION</literal>/<literal>INTERSECT</literal>/<literal>EXCEPT</literal>
over zero columns (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Peter Eisentraut <peter_e@gmx.net>
Branch: master [005ac298b] 2017-12-08 12:13:04 -0500
Branch: REL_10_STABLE [a2c6cf366] 2017-12-08 12:25:41 -0500
-->
<para>
Disallow identity columns on typed tables and partitions
(Michael Paquier)
</para>
<para>
These cases will be treated as unsupported features for now.
</para>
</listitem>
<listitem>
<!--
Author: Peter Eisentraut <peter_e@gmx.net>
Branch: master [2d2d06b7e] 2017-12-08 09:18:18 -0500
Branch: REL_10_STABLE [ee5b59549] 2017-12-08 09:39:55 -0500
Branch: master [533c5d8bd] 2018-02-02 14:39:10 -0500
Branch: REL_10_STABLE [1597948c9] 2018-02-02 15:06:52 -0500
-->
<para>
Fix assorted failures to apply the correct default value when
inserting into an identity column (Michael Paquier, Peter Eisentraut)
</para>
<para>
In several contexts, notably <command>COPY</command>
and <command>ALTER TABLE ADD COLUMN</command>, the expected default
value was not applied and instead a null value was inserted.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9a785ad57] 2017-11-27 17:54:07 -0500
Branch: REL_10_STABLE [a57aa430b] 2017-11-27 17:54:09 -0500
Branch: REL9_6_STABLE [06ba53096] 2017-11-27 17:54:10 -0500
Branch: REL9_5_STABLE [39f180fdd] 2017-11-27 17:54:11 -0500
-->
<para>
Fix failures when an inheritance tree contains foreign child tables
(Etsuro Fujita)
</para>
<para>
A mix of regular and foreign tables in an inheritance tree resulted in
creation of incorrect plans for <command>UPDATE</command>
and <command>DELETE</command> queries. This led to visible failures in
some cases, notably when there are row-level triggers on a foreign
child table.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [9b63c13f0] 2017-11-25 14:15:48 -0500
Branch: REL_10_STABLE [5dc7faa91] 2017-11-25 14:15:48 -0500
Branch: REL9_6_STABLE [497e79b96] 2017-11-25 14:15:48 -0500
Branch: REL9_5_STABLE [ae6ed0784] 2017-11-25 14:15:48 -0500
Branch: REL9_4_STABLE [2e105cf6d] 2017-11-25 14:15:48 -0500
Branch: REL9_3_STABLE [d538f6568] 2017-11-25 14:15:48 -0500
-->
<para>
Repair failure with correlated sub-<literal>SELECT</literal>
inside <literal>VALUES</literal> inside a <literal>LATERAL</literal>
subquery (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [bb94ce4d2] 2018-01-23 16:50:34 -0500
Branch: REL_10_STABLE [c5e59bb60] 2018-01-23 16:50:34 -0500
Branch: REL9_6_STABLE [ae3699a6a] 2018-01-23 16:50:35 -0500
Branch: REL9_5_STABLE [8a2228b2f] 2018-01-23 16:50:35 -0500
Branch: REL9_4_STABLE [54e1599c7] 2018-01-23 16:50:35 -0500
Branch: REL9_3_STABLE [b100a5274] 2018-01-23 16:50:35 -0500
-->
<para>
Fix <quote>could not devise a query plan for the given query</quote>
planner failure for some cases involving nested <literal>UNION
ALL</literal> inside a lateral subquery (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ecc27d55f] 2017-12-04 11:51:43 -0500
Branch: REL_10_STABLE [bf2b317f1] 2017-12-04 11:51:43 -0500
-->
<para>
Allow functional dependency statistics to be used for boolean columns
(Tom Lane)
</para>
<para>
Previously, although extended statistics could be declared and
collected on boolean columns, the planner failed to apply them.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [df3a66e28] 2017-11-25 11:48:09 -0500
Branch: REL_10_STABLE [b9fc2d0b9] 2017-11-25 11:48:09 -0500
-->
<para>
Avoid underestimating the number of groups emitted by subqueries
containing set-returning functions in their grouping columns (Tom Lane)
</para>
<para>
Cases similar to <literal>SELECT DISTINCT unnest(foo)</literal> got a
lower output rowcount estimate in 10.0 than they did in earlier
releases, possibly resulting in unfavorable plan choices. Restore the
prior estimation behavior.
</para>
</listitem>
<listitem>
<!--
Author: Simon Riggs <simon@2ndQuadrant.com>
Branch: master [7e17a6889] 2017-11-22 16:28:14 +1100
Branch: REL_10_STABLE [7015bb389] 2017-11-28 09:37:22 +0000
-->
<para>
Fix use of triggers in logical replication workers (Petr Jelinek)
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [df9f682c7] 2018-01-05 12:17:10 -0300
Branch: REL_10_STABLE [a19c262f3] 2018-01-05 12:17:10 -0300
Branch: REL9_6_STABLE [9a5e4a6e0] 2018-01-05 12:17:10 -0300
Branch: REL9_5_STABLE [132cd58d6] 2018-01-05 12:17:10 -0300
Branch: REL9_4_STABLE [f68c49f86] 2018-01-05 12:17:10 -0300
-->
<para>
Fix logical decoding to correctly clean up disk files for crashed
transactions (Atsushi Torikoshi)
</para>
<para>
Logical decoding may spill WAL records to disk for transactions
generating many WAL records. Normally these files are cleaned up
after the commit or abort record arrives for the transaction; but if
no such record is ever seen, the removal code misbehaved.
</para>
</listitem>
<listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [0fedb4ea6] 2017-12-14 11:13:14 -0500
Branch: REL_10_STABLE [14c15b1f4] 2017-12-14 11:29:34 -0500
Branch: REL9_6_STABLE [c28e0b1e0] 2017-12-14 11:31:13 -0500
Branch: REL9_5_STABLE [87056267e] 2017-12-14 11:32:00 -0500
Branch: REL9_4_STABLE [f5c7e0cdd] 2017-12-14 11:32:25 -0500
-->
<para>
Fix walsender timeout failure and failure to respond to interrupts
when processing a large transaction (Petr Jelinek)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [8a906204a] 2018-01-09 12:09:30 -0500
Branch: REL_10_STABLE [1f5adbd79] 2018-01-09 12:09:30 -0500
-->
<para>
Fix race condition during replication origin drop that could allow the
dropping process to wait indefinitely (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Simon Riggs <simon@2ndQuadrant.com>
Branch: master [6668a54eb] 2018-01-06 11:48:21 +0000
Branch: REL_10_STABLE [76e117dbe] 2018-01-28 16:14:31 +0000
-->
<para>
Allow members of the <literal>pg_read_all_stats</literal> role to see
walsender statistics in the <structname>pg_stat_replication</structname>
view (Feike Steenbergen)
</para>
</listitem>
<listitem>
<!--
Author: Magnus Hagander <magnus@hagander.net>
Branch: master [d02974e32] 2017-12-29 16:28:32 +0100
Branch: REL_10_STABLE [b38c3d58e] 2017-12-29 16:22:43 +0100
-->
<para>
Show walsenders that are sending base backups as active
in <structname>pg_stat_activity</structname> (Magnus Hagander)
</para>
</listitem>
<listitem>
<!--
Author: Peter Eisentraut <peter_e@gmx.net>
Branch: master [38d485fda] 2018-01-30 16:50:30 -0500
Branch: REL_10_STABLE [167a22b2a] 2018-01-30 17:05:35 -0500
-->
<para>
Fix reporting of <literal>scram-sha-256</literal> authentication
method in the <structname>pg_hba_file_rules</structname> view
(Michael Paquier)
</para>
<para>
Previously this was printed as <literal>scram-sha256</literal>,
possibly confusing users as to the correct spelling.
</para>
</listitem>
<listitem>
<!--
Author: Joe Conway <mail@joeconway.com>
Branch: master [752714dd9] 2017-11-26 09:49:40 -0800
Branch: REL_10_STABLE [9e051b674] 2017-11-26 09:50:00 -0800
Branch: REL9_6_STABLE [997015ef2] 2017-11-26 09:50:15 -0800
Branch: REL9_5_STABLE [db714c62b] 2017-11-26 09:50:27 -0800
Branch: REL9_4_STABLE [d8d9c97cd] 2017-11-26 09:50:42 -0800
Branch: REL9_3_STABLE [69e5b1e9c] 2017-11-26 09:50:53 -0800
-->
<para>
Fix <function>has_sequence_privilege()</function> to
support <literal>WITH GRANT OPTION</literal> tests (Joe Conway)
</para>
<para>
This case was already handled by other privilege-testing functions.
</para>
</listitem>
<listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [2918fcedb] 2017-11-11 11:10:53 -0800
Branch: REL_10_STABLE [30a5e940a] 2017-11-11 11:11:15 -0800
Branch: REL9_6_STABLE [46fb15f48] 2017-11-11 11:11:19 -0800
Branch: REL9_5_STABLE [e7083dfce] 2017-11-11 11:11:21 -0800
Branch: REL9_4_STABLE [2f4061aff] 2017-11-11 11:11:24 -0800
Branch: REL9_3_STABLE [d8406b9de] 2017-11-11 11:11:28 -0800
Branch: master [4b865aee2] 2017-11-11 13:07:46 -0800
Branch: REL_10_STABLE [075ced2a4] 2017-11-11 13:07:54 -0800
Branch: REL9_6_STABLE [742471ef9] 2017-11-11 13:07:55 -0800
Branch: REL9_5_STABLE [739f1f6ac] 2017-11-11 13:07:55 -0800
Branch: REL9_4_STABLE [e48fb50d8] 2017-11-11 13:07:55 -0800
Branch: REL9_3_STABLE [f5260d5ad] 2017-11-11 13:07:55 -0800
-->
<para>
In databases using UTF8 encoding, ignore any XML declaration that
asserts a different encoding (Pavel Stehule, Noah Misch)
</para>
<para>
We always store XML strings in the database encoding, so allowing
libxml to act on a declaration of another encoding gave wrong results.
In encodings other than UTF8, we don't promise to support non-ASCII
XML data anyway, so retain the previous behavior for bug compatibility.
This change affects only <function>xpath()</function> and related
functions; other XML code paths already acted this way.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [ae65f6066] 2017-11-21 13:56:24 -0500
Branch: REL_10_STABLE [5b2a87707] 2017-11-21 14:03:51 -0500
Branch: REL9_6_STABLE [7c84bc0b3] 2017-11-21 14:30:33 -0500
Branch: REL9_5_STABLE [c703aa625] 2017-11-21 14:34:26 -0500
Branch: REL9_4_STABLE [294136d42] 2017-11-21 14:38:29 -0500
Branch: REL9_3_STABLE [aa3a78c3d] 2017-11-21 14:45:29 -0500
-->
<para>
Provide for forward compatibility with future minor protocol versions
(Robert Haas, Badrul Chowdhury)
</para>
<para>
Up to now, <productname>PostgreSQL</productname> servers simply
rejected requests to use protocol versions newer than 3.0, so that
there was no functional difference between the major and minor parts
of the protocol version number. Allow clients to request versions 3.x
without failing, sending back a message showing that the server only
understands 3.0. This makes no difference at the moment, but
back-patching this change should allow speedier introduction of future
minor protocol upgrades.
</para>
</listitem>
<listitem>
<!--
Author: Peter Eisentraut <peter_e@gmx.net>
Branch: REL_10_STABLE [218b024a7] 2017-12-08 10:17:46 -0500
-->
<para>
Allow a client that supports SCRAM channel binding (such as v11 or
later <application>libpq</application>) to connect to a v10 server
(Michael Paquier)
</para>
<para>
v10 does not have this feature, and the connection-time negotiation
about whether to use it was done incorrectly.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [aced5a92b] 2018-01-05 19:21:30 -0500
Branch: REL_10_STABLE [1c77e9908] 2018-01-05 19:21:30 -0500
-->
<para>
Avoid live-lock in <function>ConditionVariableBroadcast()</function>
(Tom Lane, Thomas Munro)
</para>
<para>
Given repeatedly-unlucky timing, a process attempting to awaken all
waiters for a condition variable could loop indefinitely. This
affects only parallel index scans and some operations on replication
slots.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [59d1e2b95] 2017-12-21 09:24:30 -0500
Branch: REL_10_STABLE [f3decdc94] 2017-12-21 09:24:48 -0500
-->
<para>
Clean up waits for condition variables correctly during subtransaction
abort (Robert Haas)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [80259d4db] 2018-01-09 12:34:57 -0500
Branch: REL_10_STABLE [d56a5f994] 2018-01-09 12:34:46 -0500
-->
<para>
Ensure that child processes that are waiting for a condition variable
will exit promptly if the postmaster process dies (Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [fd7c0fa73] 2017-12-18 12:22:31 -0500
Branch: REL_10_STABLE [b70ea4c75] 2017-12-18 12:31:10 -0500
-->
<para>
Fix crashes in parallel queries using more than one Gather node
(Thomas Munro)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [884a60840] 2017-12-13 16:15:44 -0500
Branch: REL_10_STABLE [192ffe1cb] 2017-12-13 16:09:00 -0500
-->
<para>
Fix hang in parallel index scan when processing a deleted or half-dead
index page (Amit Kapila)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [c6755e233] 2017-11-28 11:44:59 -0500
Branch: REL_10_STABLE [ec7629dfb] 2017-11-28 11:49:01 -0500
-->
<para>
Avoid crash if parallel bitmap heap scan is unable to allocate a
shared memory segment (Robert Haas)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [28724fd90] 2017-12-06 08:58:27 -0500
Branch: REL_10_STABLE [a8ef4e81e] 2017-12-06 09:01:21 -0500
Branch: REL9_6_STABLE [b75644066] 2017-12-06 09:04:02 -0500
Branch: REL9_5_STABLE [0426a77ce] 2017-12-06 09:06:25 -0500
Branch: REL9_4_STABLE [facd94e72] 2017-12-06 09:08:30 -0500
Branch: master [2badb5afb] 2018-01-23 11:03:03 -0500
Branch: REL_10_STABLE [383e4268f] 2018-01-23 11:13:42 -0500
Branch: REL9_6_STABLE [2843c01a5] 2018-01-23 11:13:50 -0500
-->
<para>
Cope with failure to start a parallel worker process
(Amit Kapila, Robert Haas)
</para>
<para>
Parallel query previously tended to hang indefinitely if a worker
could not be started, as the result of <literal>fork()</literal>
failure or other low-probability problems.
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [445dbd82a] 2017-11-28 12:15:38 -0500
Branch: REL_10_STABLE [dba6e75c1] 2017-11-28 12:19:19 -0500
-->
<para>
Avoid unnecessary failure when no error queues are created during
parallel query startup (Robert Haas)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [8526bcb2d] 2017-12-19 12:21:56 -0500
Branch: REL_10_STABLE [72567f617] 2017-12-19 12:44:21 -0500
Branch: REL9_6_STABLE [2157a61b5] 2018-01-04 12:46:00 -0500
-->
<para>
Fix collection of <command>EXPLAIN</command> statistics from parallel
workers (Amit Kapila, Thomas Munro)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [f94eec490] 2017-12-20 17:26:50 -0500
Branch: REL_10_STABLE [7be0d775a] 2017-12-20 17:27:25 -0500
-->
<para>
Ensure that query strings passed to parallel workers are correctly
null-terminated (Thomas Munro)
</para>
<para>
This prevents emitting garbage in postmaster log output from such
workers.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [751804998] 2017-11-14 15:03:55 -0500
Branch: REL_10_STABLE [619a8c47d] 2017-11-14 17:49:49 -0500
Branch: REL9_6_STABLE [4a15f87d2] 2017-11-14 17:49:49 -0500
Branch: REL9_5_STABLE [d4e38489f] 2017-11-14 17:49:49 -0500
-->
<para>
Avoid unsafe alignment assumptions when working
with <type>__int128</type> (Tom Lane)
</para>
<para>
Typically, compilers assume that <type>__int128</type> variables are
aligned on 16-byte boundaries, but our memory allocation
infrastructure isn't prepared to guarantee that, and increasing the
setting of MAXALIGN seems infeasible for multiple reasons. Adjust the
code to allow use of <type>__int128</type> only when we can tell the
compiler to assume lesser alignment. The only known symptom of this
problem so far is crashes in some parallel aggregation queries.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [35a528062] 2018-01-28 13:39:07 -0500
Branch: REL_10_STABLE [1b2a3860d] 2018-01-28 13:39:07 -0500
Branch: REL9_6_STABLE [4e9fb4bfe] 2018-01-28 13:39:07 -0500
Branch: REL9_5_STABLE [e194f1383] 2018-01-28 13:39:07 -0500
Branch: REL9_4_STABLE [06efc5cf5] 2018-01-28 13:39:07 -0500
Branch: REL9_3_STABLE [c03fc8462] 2018-01-28 13:39:07 -0500
-->
<para>
Prevent stack-overflow crashes when planning extremely deeply
nested set operations
(<literal>UNION</literal>/<literal>INTERSECT</literal>/<literal>EXCEPT</literal>)
(Tom Lane)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2e668c522] 2018-01-27 13:52:24 -0500
Branch: REL_10_STABLE [78433f41f] 2018-01-27 13:52:24 -0500
-->
<para>
Avoid crash during an EvalPlanQual recheck of an indexscan that is the
inner child of a merge join (Tom Lane)
</para>
<para>
This could only happen during an update or <command>SELECT FOR
UPDATE</command> of a join, when there is a concurrent update of some
selected row.
</para>
</listitem>
<listitem>
<!--
Author: Alvaro Herrera <alvherre@alvh.no-ip.org>
Branch: master [414cd434f] 2017-11-28 23:40:11 -0300
Branch: REL_10_STABLE [d4607590b] 2017-11-28 23:42:42 -0300
-->
<para>
Fix crash in autovacuum when extended statistics are defined
for a table but can't be computed (&Aacute;lvaro Herrera)
</para>
</listitem>
<listitem>
<!--
Author: Peter Eisentraut <peter_e@gmx.net>
Branch: master [0c98d0dd5] 2017-11-10 14:21:32 -0500
Branch: REL_10_STABLE [f9e2885d5] 2017-11-10 14:27:51 -0500
Branch: REL9_6_STABLE [d380d080f] 2017-11-10 14:29:13 -0500
Branch: REL9_5_STABLE [9efd83bfd] 2017-11-10 14:30:06 -0500
Branch: REL9_4_STABLE [0bcdab58e] 2017-11-10 14:30:34 -0500
Branch: REL9_3_STABLE [62906461c] 2017-11-10 14:30:48 -0500
-->
<para>
Fix null-pointer crashes for some types of LDAP URLs appearing
in <filename>pg_hba.conf</filename> (Thomas Munro)
</para>
</listitem>
<listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [ab9f2c429] 2018-01-29 11:24:57 -0800
Branch: REL_10_STABLE [d1aac2998] 2018-01-29 11:24:57 -0800
Branch: master [c068f8772] 2018-01-29 11:24:57 -0800
Branch: REL_10_STABLE [d18d4bca8] 2018-01-29 11:24:57 -0800
Branch: REL_10_STABLE [c0fda304d] 2018-01-29 11:24:57 -0800
-->
<para>
Prevent out-of-memory failures due to excessive growth of simple hash
tables (Tomas Vondra, Andres Freund)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [3c1e9fd23] 2018-01-10 17:13:47 -0500
Branch: REL_10_STABLE [08adf688f] 2018-01-10 17:13:29 -0500
Branch: REL9_6_STABLE [122605194] 2018-01-10 17:13:29 -0500
Branch: REL9_5_STABLE [10bcd4165] 2018-01-10 17:13:29 -0500
Branch: REL9_4_STABLE [493cdc8ee] 2018-01-10 17:13:29 -0500
Branch: REL9_3_STABLE [45bfef7fb] 2018-01-10 17:13:29 -0500
-->
<para>
Fix sample <function>INSTR()</function> functions in the PL/pgSQL
documentation (Yugo Nagata, Tom Lane)
</para>
<para>
These functions are stated to be Oracle(TM)-compatible, but
they weren't exactly. In particular, there was a discrepancy in the
interpretation of a negative third parameter: Oracle thinks that a
negative value indicates the last place where the target substring can
begin, whereas our functions took it as the last place where the
target can end. Also, Oracle throws an error for a zero or negative
fourth parameter, whereas our functions returned zero.
</para>
<para>
The sample code has been adjusted to match Oracle's behavior more
precisely. Users who have copied this code into their applications
may wish to update their copies.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [2b792ab09] 2018-01-22 12:06:18 -0500
Branch: REL_10_STABLE [46246fd9d] 2018-01-22 12:06:18 -0500
Branch: REL9_6_STABLE [52cc1b484] 2018-01-22 12:06:19 -0500
Branch: REL9_5_STABLE [367e2b230] 2018-01-22 12:06:19 -0500
Branch: REL9_4_STABLE [da83ca7d9] 2018-01-22 12:06:19 -0500
Branch: REL9_3_STABLE [ef115621c] 2018-01-22 12:06:19 -0500
-->
<para>
Fix <application>pg_dump</application> to make ACL (permissions),
security label, and comment entries reliably identifiable in archive
output formats (Tom Lane)
</para>
<para>
The <quote>tag</quote> portion of an ACL archive entry was usually
just the name of the associated object. Make it start with the object
type instead, bringing ACLs into line with the convention already used
for comment and security label archive entries. Also, fix the
security label and comment entries for the whole database, if present,
to make their tags start with <literal>DATABASE</literal> so that they
also follow this convention. This prevents false matches in code that
tries to identify large-object-related entries by seeing if the tag
starts with <literal>LARGE OBJECT</literal>. That could have resulted
in misclassifying entries as data rather than schema, with undesirable
results in a schema-only or data-only dump.
</para>
<para>
Note that this change has user-visible results in the output
of <command>pg_restore --list</command>.
</para>
</listitem>
<listitem>
<!--
Author: Andres Freund <andres@anarazel.de>
Branch: master [3e68686e2] 2018-01-03 12:40:32 -0800
Branch: REL_10_STABLE [e3fdb7c00] 2018-01-03 12:39:59 -0800
Branch: REL9_6_STABLE [ceee51e38] 2018-01-03 12:39:59 -0800
Branch: REL9_5_STABLE [ea4cbf8f1] 2018-01-03 12:39:59 -0800
-->
<para>
Rename <application>pg_rewind</application>'s
<function>copy_file_range</function> function to avoid conflict
with new Linux system call (Andres Freund)
</para>
<para>
This change prevents build failures with newer glibc versions.
</para>
</listitem>
<listitem>
<!--
Author: Michael Meskes <meskes@postgresql.org>
Branch: master [649aeb123] 2018-01-13 14:57:49 +0100
Branch: REL_10_STABLE [8b89b7aac] 2018-01-15 10:00:56 +0100
Branch: REL9_6_STABLE [f082ef836] 2018-01-15 10:01:15 +0100
Branch: REL9_5_STABLE [4eae1e6f5] 2018-01-15 10:02:03 +0100
Branch: REL9_4_STABLE [2c1c4b060] 2018-01-15 10:02:16 +0100
Branch: REL9_3_STABLE [a0f5890a6] 2018-01-15 10:02:23 +0100
-->
<para>
In <application>ecpg</application>, detect indicator arrays that do
not have the correct length and report an error (David Rader)
</para>
</listitem>
<listitem>
<!--
Author: Teodor Sigaev <teodor@sigaev.ru>
Branch: master [563a053bd] 2018-01-11 14:41:14 +0300
Branch: REL_10_STABLE [b8279a783] 2018-01-11 14:42:16 +0300
Branch: REL9_6_STABLE [bda5281fd] 2018-01-11 14:43:13 +0300
-->
<para>
Change the behavior of <filename>contrib/cube</filename>'s
<type>cube</type> <literal>~&gt;</literal> <type>int</type>
operator to make it compatible with KNN search (Alexander Korotkov)
</para>
<para>
The meaning of the second argument (the dimension selector) has been
changed to make it predictable which value is selected even when
dealing with cubes of varying dimensionalities.
</para>
<para>
This is an incompatible change, but since the point of the operator
was to be used in KNN searches, it seems rather useless as-is.
After installing this update, any expression indexes or materialized
views using this operator will need to be reindexed/refreshed.
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [d3f4e8a8a] 2017-11-25 14:42:10 -0500
Branch: REL_10_STABLE [ddba32005] 2017-11-25 14:42:25 -0500
Branch: REL9_6_STABLE [630aceda5] 2017-11-25 14:42:32 -0500
Branch: REL9_5_STABLE [47226971e] 2017-11-25 14:42:36 -0500
Branch: REL9_4_STABLE [5c38ddebd] 2017-11-25 14:42:41 -0500
Branch: REL9_3_STABLE [6e9ac0a2e] 2017-11-25 14:42:46 -0500
-->
<para>
Avoid triggering a libc assertion
in <filename>contrib/hstore</filename>, due to use
of <function>memcpy()</function> with equal source and destination
pointers (Tomas Vondra)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [39cfe8619] 2018-01-04 14:59:00 -0500
Branch: REL_10_STABLE [5ad1b1728] 2018-01-04 14:59:00 -0500
Branch: REL9_6_STABLE [ad592f4a6] 2018-01-04 14:59:00 -0500
Branch: master [18869e202] 2018-01-04 16:00:21 -0500
Branch: REL_10_STABLE [0dc5dfcd7] 2018-01-04 15:59:30 -0500
-->
<para>
Fix incorrect display of tuples' null bitmaps
in <filename>contrib/pageinspect</filename> (Maksim Milyutin)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [b0313f9cc] 2018-01-26 09:56:33 -0500
Branch: REL_10_STABLE [51fc1b09a] 2018-01-26 09:59:14 -0500
-->
<para>
Fix incorrect output from <filename>contrib/pageinspect</filename>'s
<function>hash_page_items()</function> function (Masahiko Sawada)
</para>
</listitem>
<listitem>
<!--
Author: Robert Haas <rhaas@postgresql.org>
Branch: master [4bbf6edfb] 2018-01-17 16:18:39 -0500
Branch: REL_10_STABLE [3f05a30b5] 2018-01-17 16:57:53 -0500
Branch: REL9_6_STABLE [4a81c0229] 2018-01-17 17:09:20 -0500
Branch: master [99f6a17dd] 2018-01-30 14:44:30 -0500
Branch: REL_10_STABLE [92123c6ea] 2018-01-30 14:47:02 -0500
Branch: REL9_6_STABLE [d397f558d] 2018-01-30 14:55:14 -0500
-->
<para>
In <filename>contrib/postgres_fdw</filename>, avoid
<quote>outer pathkeys do not match mergeclauses</quote>
planner error when constructing a plan involving a remote join
(Robert Haas)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [e9f2703ab] 2018-01-12 16:52:49 -0500
Branch: REL_10_STABLE [67854bc59] 2018-01-12 16:52:49 -0500
-->
<para>
In <filename>contrib/postgres_fdw</filename>, avoid planner failure
when there are duplicate <literal>GROUP BY</literal> entries
(Jeevan Chalke)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [ac3b96268] 2017-11-17 12:46:52 -0500
Branch: REL_10_STABLE [6313995c2] 2017-11-17 12:47:11 -0500
Branch: REL9_6_STABLE [0d9243903] 2017-11-17 12:47:21 -0500
Branch: REL9_5_STABLE [9508d422b] 2017-11-17 12:47:29 -0500
Branch: REL9_4_STABLE [7d98dc133] 2017-11-17 12:47:36 -0500
Branch: REL9_3_STABLE [77b76fea9] 2017-11-17 12:47:44 -0500
-->
<para>
Provide modern examples of how to auto-start Postgres on macOS
(Tom Lane)
</para>
<para>
The scripts in <filename>contrib/start-scripts/osx</filename> use
infrastructure that's been deprecated for over a decade, and which no
longer works at all in macOS releases of the last couple of years.
Add a new subdirectory <filename>contrib/start-scripts/macos</filename>
containing scripts that use the newer launchd infrastructure.
</para>
</listitem>
<listitem>
<!--
Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [99d5a3ffb] 2018-01-03 15:36:54 -0500
Branch: REL_10_STABLE [0fb69340b] 2018-01-03 15:33:12 -0500
Branch: REL9_6_STABLE [85cdcde1f] 2018-01-03 15:33:32 -0500
Branch: REL9_5_STABLE [d329d2d3e] 2018-01-03 15:33:47 -0500
Branch: REL9_4_STABLE [2d03daa7b] 2018-01-03 15:34:02 -0500
Branch: REL9_3_STABLE [5404145c5] 2018-01-03 15:34:21 -0500
-->
<para>
Fix incorrect selection of configuration-specific libraries for
OpenSSL on Windows (Andrew Dunstan)
</para>
</listitem>
<listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [84c4313c6] 2017-11-23 20:22:04 -0800
Branch: REL_10_STABLE [f16a0958d] 2017-11-23 20:22:24 -0800
Branch: REL9_6_STABLE [1695ce068] 2017-11-23 20:24:53 -0800
Branch: REL9_5_STABLE [da8eae56e] 2017-11-23 20:25:08 -0800
Branch: REL9_4_STABLE [558f62079] 2017-11-23 20:29:48 -0800
Branch: REL9_3_STABLE [83e6b1434] 2017-11-23 20:32:01 -0800
Branch: master [7e0c574ee] 2017-12-09 00:58:55 -0800
Branch: REL_10_STABLE [e2cc65050] 2017-12-09 00:58:58 -0800
Branch: REL9_6_STABLE [055532bad] 2017-12-09 00:58:58 -0800
Branch: REL9_5_STABLE [470de6a24] 2017-12-09 00:58:59 -0800
Branch: REL9_4_STABLE [d78c3ca0e] 2017-12-09 00:58:59 -0800
Branch: REL9_3_STABLE [70dc7ad58] 2017-12-09 00:58:59 -0800
-->
<para>
Support linking to MinGW-built versions of libperl (Noah Misch)
</para>
<para>
This allows building PL/Perl with some common Perl distributions for
Windows.
</para>
</listitem>
<listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [65a00f303] 2017-12-08 18:06:05 -0800
Branch: REL_10_STABLE [9b5c99790] 2017-12-08 18:06:22 -0800
Branch: REL9_6_STABLE [140fa2fba] 2017-12-08 18:06:25 -0800
Branch: REL9_5_STABLE [1c1a572d0] 2017-12-08 18:06:29 -0800
Branch: REL9_4_STABLE [aed8d41af] 2017-12-08 18:13:49 -0800
Branch: REL9_3_STABLE [188689942] 2017-12-08 18:14:08 -0800
-->
<para>
Fix MSVC build to test whether 32-bit libperl
needs <literal>-D_USE_32BIT_TIME_T</literal> (Noah Misch)
</para>
<para>
Available Perl distributions are inconsistent about what they expect,
and lack any reliable means of reporting it, so resort to a build-time
test on what the library being used actually does.
</para>
</listitem>
<listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [cbfffee41] 2017-11-12 14:31:00 -0800
Branch: REL_10_STABLE [d6387e27e] 2017-11-12 14:31:04 -0800
Branch: REL9_6_STABLE [8c92e66f1] 2017-11-12 14:31:04 -0800
Branch: REL9_5_STABLE [b2df91f2f] 2017-11-12 14:31:04 -0800
Branch: REL9_4_STABLE [e17b38db6] 2017-11-12 14:31:04 -0800
Branch: REL9_3_STABLE [1c065901e] 2017-11-12 14:31:05 -0800
-->
<para>
On Windows, install the crash dump handler earlier in postmaster
startup (Takayuki Tsunakawa)
</para>
<para>
This may allow collection of a core dump for some early-startup
failures that did not produce a dump before.
</para>
</listitem>
<listitem>
<!--
Author: Noah Misch <noah@leadboat.com>
Branch: master [e02571b73] 2017-11-12 13:03:15 -0800
Branch: REL_10_STABLE [dcbec53f4] 2017-11-12 13:03:28 -0800
Branch: REL9_6_STABLE [fd5da32fc] 2017-11-12 13:03:28 -0800
Branch: REL9_5_STABLE [d74db7a35] 2017-11-12 13:03:28 -0800
Branch: REL9_4_STABLE [19cf9e96a] 2017-11-12 13:03:29 -0800
Branch: REL9_3_STABLE [30e99efe8] 2017-11-12 13:05:55 -0800
-->
<para>
On Windows, avoid encoding-version-related crashes when emitting
messages very early in postmaster startup (Takayuki Tsunakawa)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [84669c9b0] 2017-11-20 18:05:17 -0500
Branch: REL_10_STABLE [ae772bbf9] 2017-11-20 18:05:02 -0500
Branch: REL9_6_STABLE [fa9a69d3d] 2017-11-20 18:05:02 -0500
Branch: REL9_5_STABLE [2cfafabe6] 2017-11-20 18:05:02 -0500
Branch: REL9_4_STABLE [13f2bdb63] 2017-11-20 18:05:03 -0500
Branch: REL9_3_STABLE [1056dd0e9] 2017-11-20 18:05:03 -0500
-->
<para>
Use our existing Motorola 68K spinlock code on OpenBSD as
well as NetBSD (David Carlier)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [f3bd00c01] 2017-11-20 18:05:17 -0500
Branch: REL_10_STABLE [1ecf7eeb8] 2017-11-20 17:57:46 -0500
Branch: REL9_6_STABLE [940bafa75] 2017-11-20 17:57:46 -0500
Branch: REL9_5_STABLE [516cea4bb] 2017-11-20 17:57:46 -0500
Branch: REL9_4_STABLE [8bd8b4b77] 2017-11-20 17:57:46 -0500
Branch: REL9_3_STABLE [0245c75f4] 2017-11-20 17:57:46 -0500
-->
<para>
Add support for spinlocks on Motorola 88K (David Carlier)
</para>
</listitem>
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: master [41fc04ff9] 2018-01-27 16:42:28 -0500
Branch: REL_10_STABLE [2d71b2700] 2018-01-27 16:42:36 -0500
Branch: REL9_6_STABLE [462402be8] 2018-01-27 16:42:44 -0500
Branch: REL9_5_STABLE [b00e7555e] 2018-01-27 16:42:49 -0500
Branch: REL9_4_STABLE [fa86a32f9] 2018-01-27 16:42:55 -0500
Branch: REL9_3_STABLE [e5e2cc6f8] 2018-01-27 16:43:00 -0500
-->
<para>
Update time zone data files to <application>tzdata</application>
release 2018c for DST law changes in Brazil, Sao Tome and Principe,
plus historical corrections for Bolivia, Japan, and South Sudan.
The <literal>US/Pacific-New</literal> zone has been removed (it was
only an alias for <literal>America/Los_Angeles</literal> anyway).
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-10-1">
<title>Release 10.1</title>
......
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