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<!-- $PostgreSQL: pgsql/doc/src/sgml/release-8.4.sgml,v 1.12.2.5 2010/03/10 01:58:24 tgl Exp $ --> |
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<!-- $PostgreSQL: pgsql/doc/src/sgml/release-8.4.sgml,v 1.12.2.6 2010/05/12 23:27:26 tgl Exp $ --> |
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<!-- See header comment in release.sgml about typical markup --> |
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<sect1 id="release-8-4-4"> |
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<title>Release 8.4.4</title> |
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<note> |
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<title>Release date</title> |
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<simpara>2010-05-17</simpara> |
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</note> |
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<para> |
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This release contains a variety of fixes from 8.4.3. |
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For information about new features in the 8.4 major release, see |
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<xref linkend="release-8-4">. |
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</para> |
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<sect2> |
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<title>Migration to Version 8.4.4</title> |
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<para> |
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A dump/restore is not required for those running 8.4.X. |
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However, if you are upgrading from a version earlier than 8.4.2, |
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see the release notes for 8.4.2. |
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</para> |
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</sect2> |
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<sect2> |
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<title>Changes</title> |
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<itemizedlist> |
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<listitem> |
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<para> |
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Fix error during WAL replay of <literal>ALTER ... SET TABLESPACE</> |
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(Tom) |
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</para> |
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<para> |
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When <varname>archive_mode</> is on, <literal>ALTER ... SET TABLESPACE</> |
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generates a WAL record whose replay logic was incorrect. It could write |
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the data to the wrong place, leading to possibly-unrecoverable data |
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corruption. Data corruption would be observed on standby slaves, and |
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could occur on the master as well if a database crash and recovery |
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occurred after committing the <literal>ALTER</> and before the next |
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checkpoint. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix possible crash if a cache reset message is received during |
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rebuild of a relcache entry (Heikki) |
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</para> |
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<para> |
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This error was introduced in 8.4.3 while fixing a related failure. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Apply per-function GUC settings while running the language validator |
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for the function (Itagaki Takahiro) |
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</para> |
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<para> |
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This avoids failures if the function's code is invalid without the |
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setting; an example is that SQL functions may not parse if the |
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<varname>search_path</> is not correct. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Do constraint exclusion for inherited <command>UPDATE</> and |
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<command>DELETE</> target tables when |
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<varname>constraint_exclusion</> = <literal>partition</> (Tom) |
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</para> |
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<para> |
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Due to an oversight, this setting previously only caused constraint |
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exclusion to be checked in <command>SELECT</> commands. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Do not allow an unprivileged user to reset superuser-only parameter |
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settings (Alvaro) |
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</para> |
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<para> |
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Previously, if an unprivileged user ran <literal>ALTER USER ... RESET |
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ALL</> for himself, or <literal>ALTER DATABASE ... RESET ALL</> for |
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a database he owns, this would remove all special parameter settings |
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for the user or database, even ones that are only supposed to be |
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changeable by a superuser. Now, the <command>ALTER</> will only |
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remove the parameters that the user has permission to change. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Avoid possible crash during backend shutdown if shutdown occurs |
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when a <literal>CONTEXT</> addition would be made to log entries (Tom) |
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</para> |
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<para> |
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In some cases the context-printing function would fail because the |
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current transaction had already been rolled back when it came time |
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to print a log message. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix erroneous handling of <literal>%r</> parameter in |
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<varname>recovery_end_command</> (Heikki) |
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</para> |
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<para> |
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The value always came out zero. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Ensure the archiver process responds to changes in |
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<varname>archive_command</> as soon as possible (Tom) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix pl/pgsql's <literal>CASE</> statement to not fail when the |
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case expression is a query that returns no rows (Tom) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Update pl/perl's <filename>ppport.h</> for modern Perl versions |
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(Andrew) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix assorted memory leaks in pl/python (Andreas Freund, Tom) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Handle empty-string connect parameters properly in ecpg (Michael) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Prevent infinite recursion in <application>psql</> when expanding |
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a variable that refers to itself (Tom) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix <application>psql</>'s <literal>\copy</> to not add spaces around |
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a dot within <literal>\copy (select ...)</> (Tom) |
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</para> |
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<para> |
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Addition of spaces around the decimal point in a numeric literal would |
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result in a syntax error. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Avoid formatting failure in <application>psql</> when running in a |
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locale context that doesn't match the <varname>client_encoding</> |
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(Tom) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Fix unnecessary <quote>GIN indexes do not support whole-index scans</> |
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errors for unsatisfiable queries using <filename>contrib/intarray</> |
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operators (Tom) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Ensure that <filename>contrib/pgstattuple</> functions respond to cancel |
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interrupts promptly (Tatsuhito Kasahara) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Make server startup deal properly with the case that |
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<function>shmget()</> returns <literal>EINVAL</> for an existing |
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shared memory segment (Tom) |
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</para> |
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<para> |
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This behavior has been observed on BSD-derived kernels including OS X. |
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It resulted in an entirely-misleading startup failure complaining that |
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the shared memory request size was too large. |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Avoid possible crashes in syslogger process on Windows (Heikki) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Deal more robustly with incomplete time zone information in the |
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Windows registry (Magnus) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Update the set of known Windows time zone names (Magnus) |
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</para> |
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</listitem> |
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<listitem> |
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<para> |
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Update time zone data files to <application>tzdata</> release 2010j |
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for DST law changes in Argentina, Australian Antarctic, Bangladesh, |
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Mexico, Morocco, Pakistan, Palestine, Russia, Syria, Tunisia; |
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also historical corrections for Taiwan. |
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</para> |
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<para> |
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Also, add <literal>PKST</> (Pakistan Summer Time) to the default set of |
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timezone abbreviations. |
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</para> |
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</listitem> |
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</itemizedlist> |
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</sect2> |
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</sect1> |
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<sect1 id="release-8-4-3"> |
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<title>Release 8.4.3</title> |
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Tom Lane
16 years ago