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Commit be5d6df3 authored by Tom Lane's avatar Tom Lane
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Update release notes for 8.3.1 and 8.2.7 releases.

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<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.579 2008/02/07 22:28:54 momjian Exp $ -->
<!-- $PostgreSQL: pgsql/doc/src/sgml/release.sgml,v 1.580 2008/03/13 23:47:49 tgl Exp $ -->
<!--
Typical markup:
......@@ -63,6 +63,317 @@ do it for earlier branch release files.
review, so each item is truly a community effort.
</para>
<sect1 id="release-8-3-1">
<title>Release 8.3.1</title>
<note>
<title>Release date</title>
<simpara>2008-03-17</simpara>
</note>
<para>
This release contains a variety of fixes from 8.3.0.
</para>
<sect2>
<title>Migration to Version 8.3.1</title>
<para>
A dump/restore is not required for those running 8.3.X.
However, you might need to <command>REINDEX</> indexes on textual
columns after updating, if you are affected by the Windows locale
issue described below.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Fix character string comparison for Windows locales that consider
different character combinations as equal (Tom)
</para>
<para>
This fix applies only on Windows and only when using UTF-8
database encoding. The same fix was made for all other cases
over two years ago, but Windows with UTF-8 uses a separate code
path that was not updated. If you are using a locale that
considers some non-identical strings as equal, you may need to
<command>REINDEX</> to fix existing indexes on textual columns.
</para>
</listitem>
<listitem>
<para>
Repair corner-case bugs in <command>VACUUM FULL</> (Tom)
</para>
<para>
A potential deadlock between concurrent <command>VACUUM FULL</>
operations on different system catalogs was introduced in 8.2.
This has now been corrected. 8.3 made this worse because the
deadlock could occur within a critical code section, making it
a PANIC rather than just ERROR condition.
</para>
<para>
Also, a <command>VACUUM FULL</> that failed partway through
vacuuming a system catalog could result in cache corruption in
concurrent database sessions.
</para>
<para>
Another <command>VACUUM FULL</> bug introduced in 8.3 could
result in a crash or out-of-memory report when dealing with
pages containing no live tuples.
</para>
</listitem>
<listitem>
<para>
Fix misbehavior of foreign key checks involving <type>character</>
or <type>bit</> columns (Tom)
</para>
<para>
If the referencing column were of a different but compatible type
(for instance <type>varchar</>), the constraint was enforced incorrectly.
</para>
</listitem>
<listitem>
<para>
Avoid needless deadlock failures in no-op foreign-key checks (Stephan
Szabo, Tom)
</para>
</listitem>
<listitem>
<para>
Fix possible core dump when re-planning a prepared query (Tom)
</para>
<para>
This bug affected only protocol-level prepare operations, not
SQL <command>PREPARE</>, and so tended to be seen only with
JDBC, DBI, and other client-side drivers that use prepared
statements heavily.
</para>
</listitem>
<listitem>
<para>
Fix possible failure when re-planning a query that calls an SPI-using
function (Tom)
</para>
</listitem>
<listitem>
<para>
Fix failure in row-wise comparisons involving columns of different
datatypes (Tom)
</para>
</listitem>
<listitem>
<para>
Fix longstanding <command>LISTEN</>/<command>NOTIFY</>
race condition (Tom)
</para>
<para>
In rare cases a session that had just executed a
<command>LISTEN</> might not get a notification, even though
one would be expected because the concurrent transaction executing
<command>NOTIFY</> was observed to commit later.
</para>
<para>
A side effect of the fix is that a transaction that has executed
a not-yet-committed <command>LISTEN</> command will not see any
row in <structname>pg_listener</> for the <command>LISTEN</>,
should it choose to look; formerly it would have. This behavior
was never documented one way or the other, but it is possible that
some applications depend on the old behavior.
</para>
</listitem>
<listitem>
<para>
Disallow <command>LISTEN</> and <command>UNLISTEN</> within a
prepared transaction (Tom)
</para>
<para>
This was formerly allowed but trying to do it had various unpleasant
consequences, notably that the originating backend could not exit
as long as an <command>UNLISTEN</> remained uncommitted.
</para>
</listitem>
<listitem>
<para>
Disallow dropping a temporary table within a
prepared transaction (Heikki)
</para>
<para>
This was correctly disallowed by 8.1, but the check was inadvertently
broken in 8.2 and 8.3.
</para>
</listitem>
<listitem>
<para>
Fix rare crash when an error occurs during a query using a hash index
(Heikki)
</para>
</listitem>
<listitem>
<para>
Fix incorrect comparison of <type>tsquery</> values (Teodor)
</para>
</listitem>
<listitem>
<para>
Fix incorrect behavior of <literal>LIKE</> with non-ASCII characters
in single-byte encodings (Rolf Jentsch)
</para>
</listitem>
<listitem>
<para>
Disable <function>xmlvalidate</> (Tom)
</para>
<para>
This function should have been removed before 8.3 release, but
was inadvertently left in the source code. It poses a small
security risk since unprivileged users could use it to read the
first few characters of any file accessible to the server.
</para>
</listitem>
<listitem>
<para>
Fix memory leaks in certain usages of set-returning functions (Neil)
</para>
</listitem>
<listitem>
<para>
Make <function>encode(<replaceable>bytea</>, 'escape')</> convert all
high-bit-set byte values into <literal>\</><replaceable>nnn</> octal
escape sequences (Tom)
</para>
<para>
This is necessary to avoid encoding problems when the database
encoding is multi-byte. This change could pose compatibility issues
for applications that are expecting specific results from
<function>encode</>.
</para>
</listitem>
<listitem>
<para>
Fix input of datetime values for February 29 in years BC (Tom)
</para>
<para>
The former coding was mistaken about which years were leap years.
</para>
</listitem>
<listitem>
<para>
Fix <quote>unrecognized node type</> error in some variants of
<command>ALTER OWNER</> (Tom)
</para>
</listitem>
<listitem>
<para>
Avoid tablespace permissions errors in <command>CREATE TABLE LIKE
INCLUDING INDEXES</> (Tom)
</para>
</listitem>
<listitem>
<para>
Ensure <structname>pg_stat_activity</>.<structfield>waiting</> flag
is cleared when a lock wait is aborted (Tom)
</para>
</listitem>
<listitem>
<para>
Fix handling of process permissions on Windows Vista (Dave, Magnus)
</para>
<para>
In particular, this fix allows starting the server as the Administrator
user.
</para>
</listitem>
<listitem>
<para>
Update time zone data files to <application>tzdata</> release 2008a
(in particular, recent Chile changes); adjust timezone abbreviation
<literal>VET</> (Venezuela) to mean UTC-4:30, not UTC-4:00 (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <application>ecpg</> problems with arrays (Michael)
</para>
</listitem>
<listitem>
<para>
Fix <application>pg_ctl</> to correctly extract the postmaster's port
number from command-line options (Itagaki Takahiro, Tom)
</para>
<para>
Previously, <literal>pg_ctl start -w</> could try to contact the
postmaster on the wrong port, leading to bogus reports of startup
failure.
</para>
</listitem>
<listitem>
<para>
Use <option>-fwrapv</> to defend against possible misoptimization
in recent <application>gcc</> versions (Tom)
</para>
<para>
This is known to be necessary when building <productname>PostgreSQL</>
with <application>gcc</> 4.3 or later.
</para>
</listitem>
<listitem>
<para>
Enable building <filename>contrib/uuid-ossp</> with MSVC (Hiroshi Saito)
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-8-3">
<title>Release 8.3</title>
......@@ -2671,6 +2982,273 @@ current_date &lt; 2017-11-17
</sect2>
</sect1>
<sect1 id="release-8-2-7">
<title>Release 8.2.7</title>
<note>
<title>Release date</title>
<simpara>2008-03-17</simpara>
</note>
<para>
This release contains a variety of fixes from 8.2.6.
</para>
<sect2>
<title>Migration to Version 8.2.7</title>
<para>
A dump/restore is not required for those running 8.2.X.
However, you might need to <command>REINDEX</> indexes on textual
columns after updating, if you are affected by the Windows locale
issue described below.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Fix character string comparison for Windows locales that consider
different character combinations as equal (Tom)
</para>
<para>
This fix applies only on Windows and only when using UTF-8
database encoding. The same fix was made for all other cases
over two years ago, but Windows with UTF-8 uses a separate code
path that was not updated. If you are using a locale that
considers some non-identical strings as equal, you may need to
<command>REINDEX</> to fix existing indexes on textual columns.
</para>
</listitem>
<listitem>
<para>
Repair potential deadlock between concurrent <command>VACUUM FULL</>
operations on different system catalogs (Tom)
</para>
</listitem>
<listitem>
<para>
Fix longstanding <command>LISTEN</>/<command>NOTIFY</>
race condition (Tom)
</para>
<para>
In rare cases a session that had just executed a
<command>LISTEN</> might not get a notification, even though
one would be expected because the concurrent transaction executing
<command>NOTIFY</> was observed to commit later.
</para>
<para>
A side effect of the fix is that a transaction that has executed
a not-yet-committed <command>LISTEN</> command will not see any
row in <structname>pg_listener</> for the <command>LISTEN</>,
should it choose to look; formerly it would have. This behavior
was never documented one way or the other, but it is possible that
some applications depend on the old behavior.
</para>
</listitem>
<listitem>
<para>
Disallow <command>LISTEN</> and <command>UNLISTEN</> within a
prepared transaction (Tom)
</para>
<para>
This was formerly allowed but trying to do it had various unpleasant
consequences, notably that the originating backend could not exit
as long as an <command>UNLISTEN</> remained uncommitted.
</para>
</listitem>
<listitem>
<para>
Disallow dropping a temporary table within a
prepared transaction (Heikki)
</para>
<para>
This was correctly disallowed by 8.1, but the check was inadvertently
broken in 8.2.
</para>
</listitem>
<listitem>
<para>
Fix rare crash when an error occurs during a query using a hash index
(Heikki)
</para>
</listitem>
<listitem>
<para>
Fix memory leaks in certain usages of set-returning functions (Neil)
</para>
</listitem>
<listitem>
<para>
Fix input of datetime values for February 29 in years BC (Tom)
</para>
<para>
The former coding was mistaken about which years were leap years.
</para>
</listitem>
<listitem>
<para>
Fix <quote>unrecognized node type</> error in some variants of
<command>ALTER OWNER</> (Tom)
</para>
</listitem>
<listitem>
<para>
Ensure <structname>pg_stat_activity</>.<structfield>waiting</> flag
is cleared when a lock wait is aborted (Tom)
</para>
</listitem>
<listitem>
<para>
Fix handling of process permissions on Windows Vista (Dave, Magnus)
</para>
<para>
In particular, this fix allows starting the server as the Administrator
user.
</para>
</listitem>
<listitem>
<para>
Update time zone data files to <application>tzdata</> release 2008a
(in particular, recent Chile changes); adjust timezone abbreviation
<literal>VET</> (Venezuela) to mean UTC-4:30, not UTC-4:00 (Tom)
</para>
</listitem>
<listitem>
<para>
Fix <application>pg_ctl</> to correctly extract the postmaster's port
number from command-line options (Itagaki Takahiro, Tom)
</para>
<para>
Previously, <literal>pg_ctl start -w</> could try to contact the
postmaster on the wrong port, leading to bogus reports of startup
failure.
</para>
</listitem>
<listitem>
<para>
Use <option>-fwrapv</> to defend against possible misoptimization
in recent <application>gcc</> versions (Tom)
</para>
<para>
This is known to be necessary when building <productname>PostgreSQL</>
with <application>gcc</> 4.3 or later.
</para>
</listitem>
<listitem>
<para>
Correctly enforce <varname>statement_timeout</> values longer
than <literal>INT_MAX</> microseconds (about 35 minutes) (Tom)
</para>
<para>
This bug affects only builds with <option>--enable-integer-datetimes</>.
</para>
</listitem>
<listitem>
<para>
Fix <quote>unexpected PARAM_SUBLINK ID</> planner error when
constant-folding simplifies a sub-select (Tom)
</para>
</listitem>
<listitem>
<para>
Fix logical errors in constraint-exclusion handling of <literal>IS
NULL</> and <literal>NOT</> expressions (Tom)
</para>
<para>
The planner would sometimes exclude partitions that should not
have been excluded because of the possibility of NULL results.
</para>
</listitem>
<listitem>
<para>
Fix another cause of <quote>failed to build any N-way joins</>
planner errors (Tom)
</para>
<para>
This could happen in cases where a clauseless join needed to be
forced before a join clause could be exploited.
</para>
</listitem>
<listitem>
<para>
Fix incorrect constant propagation in outer-join planning (Tom)
</para>
<para>
The planner could sometimes incorrectly conclude that a variable
could be constrained to be equal to a constant, leading
to wrong query results.
</para>
</listitem>
<listitem>
<para>
Fix display of constant expressions in <literal>ORDER BY</>
and <literal>GROUP BY</> (Tom)
</para>
<para>
An explictly casted constant would be shown incorrectly. This could
for example lead to corruption of a view definition during
dump and reload.
</para>
</listitem>
<listitem>
<para>
Fix <application>libpq</> to handle NOTICE messages correctly
during COPY OUT (Tom)
</para>
<para>
This failure has only been observed to occur when a user-defined
datatype's output routine issues a NOTICE, but there is no
guaranteee it couldn't happen due to other causes.
</para>
</listitem>
</itemizedlist>
</sect2>
</sect1>
<sect1 id="release-8-2-6">
<title>Release 8.2.6</title>
......
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