<!-- doc/src/sgml/release-8.1.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-8-1-23">
+ <title>Release 8.1.23</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2010-12-16</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.1.22.
+ For information about new features in the 8.1 major release, see
+ <xref linkend="release-8-1">.
+ </para>
+
+ <para>
+ This is expected to be the last <productname>PostgreSQL</> release
+ in the 8.1.X series. Users are encouraged to update to a newer
+ release branch soon.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.1.23</title>
+
+ <para>
+ A dump/restore is not required for those running 8.1.X.
+ However, if you are upgrading from a version earlier than 8.1.18,
+ see the release notes for 8.1.18.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Force the default
+ <link linkend="guc-wal-sync-method"><varname>wal_sync_method</></link>
+ to be <literal>fdatasync</> on Linux (Tom Lane, Marti Raudsepp)
+ </para>
+
+ <para>
+ The default on Linux has actually been <literal>fdatasync</> for many
+ years, but recent kernel changes caused <productname>PostgreSQL</> to
+ choose <literal>open_datasync</> instead. This choice did not result
+ in any performance improvement, and caused outright failures on
+ certain filesystems, notably <literal>ext4</> with the
+ <literal>data=journal</> mount option.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix recovery from base backup when the starting checkpoint WAL record
+ is not in the same WAL segment as its redo point (Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for detecting register-stack overrun on <literal>IA64</>
+ (Tom Lane)
+ </para>
+
+ <para>
+ The <literal>IA64</> architecture has two hardware stacks. Full
+ prevention of stack-overrun failures requires checking both.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a check for stack overflow in <function>copyObject()</> (Tom Lane)
+ </para>
+
+ <para>
+ Certain code paths could crash due to stack overflow given a
+ sufficiently complex query.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix detection of page splits in temporary GiST indexes (Heikki
+ Linnakangas)
+ </para>
+
+ <para>
+ It is possible to have a <quote>concurrent</> page split in a
+ temporary index, if for example there is an open cursor scanning the
+ index when an insertion is done. GiST failed to detect this case and
+ hence could deliver wrong results when execution of the cursor
+ continued.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid memory leakage while <command>ANALYZE</>'ing complex index
+ expressions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure an index that uses a whole-row Var still depends on its table
+ (Tom Lane)
+ </para>
+
+ <para>
+ An index declared like <literal>create index i on t (foo(t.*))</>
+ would not automatically get dropped when its table was dropped.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Do not <quote>inline</> a SQL function with multiple <literal>OUT</>
+ parameters (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a possible crash due to loss of information about the
+ expected result rowtype.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix constant-folding of <literal>COALESCE()</> expressions (Tom Lane)
+ </para>
+
+ <para>
+ The planner would sometimes attempt to evaluate sub-expressions that
+ in fact could never be reached, possibly leading to unexpected errors.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add print functionality for <structname>InhRelation</> nodes (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a failure when <varname>debug_print_parse</> is enabled
+ and certain types of query are executed.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of distance from a point to a horizontal
+ line segment (Tom Lane)
+ </para>
+
+ <para>
+ This bug affected several different geometric distance-measurement
+ operators.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/pgSQL</>'s handling of <quote>simple</>
+ expressions to not fail in recursion or error-recovery cases (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix bug in <filename>contrib/cube</>'s GiST picksplit algorithm
+ (Alexander Korotkov)
+ </para>
+
+ <para>
+ This could result in considerable inefficiency, though not actually
+ incorrect answers, in a GiST index on a <type>cube</> column.
+ If you have such an index, consider <command>REINDEX</>ing it after
+ installing this update.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Don't emit <quote>identifier will be truncated</> notices in
+ <filename>contrib/dblink</> except when creating new connections
+ (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential coredump on missing public key in
+ <filename>contrib/pgcrypto</> (Marti Raudsepp)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix memory leak in <filename>contrib/xml2</>'s XPath query functions
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2010o
+ for DST law changes in Fiji and Samoa;
+ also historical corrections for Hong Kong.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-1-22">
<title>Release 8.1.22</title>
<!-- doc/src/sgml/release-8.2.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-8-2-19">
+ <title>Release 8.2.19</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2010-12-16</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.2.18.
+ For information about new features in the 8.2 major release, see
+ <xref linkend="release-8-2">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.2.19</title>
+
+ <para>
+ A dump/restore is not required for those running 8.2.X.
+ However, if you are upgrading from a version earlier than 8.2.14,
+ see the release notes for 8.2.14.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Force the default
+ <link linkend="guc-wal-sync-method"><varname>wal_sync_method</></link>
+ to be <literal>fdatasync</> on Linux (Tom Lane, Marti Raudsepp)
+ </para>
+
+ <para>
+ The default on Linux has actually been <literal>fdatasync</> for many
+ years, but recent kernel changes caused <productname>PostgreSQL</> to
+ choose <literal>open_datasync</> instead. This choice did not result
+ in any performance improvement, and caused outright failures on
+ certain filesystems, notably <literal>ext4</> with the
+ <literal>data=journal</> mount option.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix assorted bugs in WAL replay logic for GIN indexes (Tom Lane)
+ </para>
+
+ <para>
+ This could result in <quote>bad buffer id: 0</> failures or
+ corruption of index contents during replication.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix recovery from base backup when the starting checkpoint WAL record
+ is not in the same WAL segment as its redo point (Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for detecting register-stack overrun on <literal>IA64</>
+ (Tom Lane)
+ </para>
+
+ <para>
+ The <literal>IA64</> architecture has two hardware stacks. Full
+ prevention of stack-overrun failures requires checking both.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a check for stack overflow in <function>copyObject()</> (Tom Lane)
+ </para>
+
+ <para>
+ Certain code paths could crash due to stack overflow given a
+ sufficiently complex query.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix detection of page splits in temporary GiST indexes (Heikki
+ Linnakangas)
+ </para>
+
+ <para>
+ It is possible to have a <quote>concurrent</> page split in a
+ temporary index, if for example there is an open cursor scanning the
+ index when an insertion is done. GiST failed to detect this case and
+ hence could deliver wrong results when execution of the cursor
+ continued.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid memory leakage while <command>ANALYZE</>'ing complex index
+ expressions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure an index that uses a whole-row Var still depends on its table
+ (Tom Lane)
+ </para>
+
+ <para>
+ An index declared like <literal>create index i on t (foo(t.*))</>
+ would not automatically get dropped when its table was dropped.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Do not <quote>inline</> a SQL function with multiple <literal>OUT</>
+ parameters (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a possible crash due to loss of information about the
+ expected result rowtype.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Behave correctly if <literal>ORDER BY</>, <literal>LIMIT</>,
+ <literal>FOR UPDATE</>, or <literal>WITH</> is attached to the
+ <literal>VALUES</> part of <literal>INSERT ... VALUES</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix constant-folding of <literal>COALESCE()</> expressions (Tom Lane)
+ </para>
+
+ <para>
+ The planner would sometimes attempt to evaluate sub-expressions that
+ in fact could never be reached, possibly leading to unexpected errors.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add print functionality for <structname>InhRelation</> nodes (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a failure when <varname>debug_print_parse</> is enabled
+ and certain types of query are executed.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of distance from a point to a horizontal
+ line segment (Tom Lane)
+ </para>
+
+ <para>
+ This bug affected several different geometric distance-measurement
+ operators.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/pgSQL</>'s handling of <quote>simple</>
+ expressions to not fail in recursion or error-recovery cases (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/Python</>'s handling of set-returning functions
+ (Jan Urbanski)
+ </para>
+
+ <para>
+ Attempts to call SPI functions within the iterator generating a set
+ result would fail.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix bug in <filename>contrib/cube</>'s GiST picksplit algorithm
+ (Alexander Korotkov)
+ </para>
+
+ <para>
+ This could result in considerable inefficiency, though not actually
+ incorrect answers, in a GiST index on a <type>cube</> column.
+ If you have such an index, consider <command>REINDEX</>ing it after
+ installing this update.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Don't emit <quote>identifier will be truncated</> notices in
+ <filename>contrib/dblink</> except when creating new connections
+ (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential coredump on missing public key in
+ <filename>contrib/pgcrypto</> (Marti Raudsepp)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix memory leak in <filename>contrib/xml2</>'s XPath query functions
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2010o
+ for DST law changes in Fiji and Samoa;
+ also historical corrections for Hong Kong.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-2-18">
<title>Release 8.2.18</title>
<!-- doc/src/sgml/release-8.3.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-8-3-13">
+ <title>Release 8.3.13</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2010-12-16</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.3.12.
+ For information about new features in the 8.3 major release, see
+ <xref linkend="release-8-3">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.3.13</title>
+
+ <para>
+ A dump/restore is not required for those running 8.3.X.
+ However, if you are upgrading from a version earlier than 8.3.8,
+ see the release notes for 8.3.8.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Force the default
+ <link linkend="guc-wal-sync-method"><varname>wal_sync_method</></link>
+ to be <literal>fdatasync</> on Linux (Tom Lane, Marti Raudsepp)
+ </para>
+
+ <para>
+ The default on Linux has actually been <literal>fdatasync</> for many
+ years, but recent kernel changes caused <productname>PostgreSQL</> to
+ choose <literal>open_datasync</> instead. This choice did not result
+ in any performance improvement, and caused outright failures on
+ certain filesystems, notably <literal>ext4</> with the
+ <literal>data=journal</> mount option.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix assorted bugs in WAL replay logic for GIN indexes (Tom Lane)
+ </para>
+
+ <para>
+ This could result in <quote>bad buffer id: 0</> failures or
+ corruption of index contents during replication.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix recovery from base backup when the starting checkpoint WAL record
+ is not in the same WAL segment as its redo point (Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix persistent slowdown of autovacuum workers when multiple workers
+ remain active for a long time (Tom Lane)
+ </para>
+
+ <para>
+ The effective <varname>vacuum_cost_limit</> for an autovacuum worker
+ could drop to nearly zero if it processed enough tables, causing it
+ to run extremely slowly.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for detecting register-stack overrun on <literal>IA64</>
+ (Tom Lane)
+ </para>
+
+ <para>
+ The <literal>IA64</> architecture has two hardware stacks. Full
+ prevention of stack-overrun failures requires checking both.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a check for stack overflow in <function>copyObject()</> (Tom Lane)
+ </para>
+
+ <para>
+ Certain code paths could crash due to stack overflow given a
+ sufficiently complex query.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix detection of page splits in temporary GiST indexes (Heikki
+ Linnakangas)
+ </para>
+
+ <para>
+ It is possible to have a <quote>concurrent</> page split in a
+ temporary index, if for example there is an open cursor scanning the
+ index when an insertion is done. GiST failed to detect this case and
+ hence could deliver wrong results when execution of the cursor
+ continued.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid memory leakage while <command>ANALYZE</>'ing complex index
+ expressions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure an index that uses a whole-row Var still depends on its table
+ (Tom Lane)
+ </para>
+
+ <para>
+ An index declared like <literal>create index i on t (foo(t.*))</>
+ would not automatically get dropped when its table was dropped.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Do not <quote>inline</> a SQL function with multiple <literal>OUT</>
+ parameters (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a possible crash due to loss of information about the
+ expected result rowtype.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Behave correctly if <literal>ORDER BY</>, <literal>LIMIT</>,
+ <literal>FOR UPDATE</>, or <literal>WITH</> is attached to the
+ <literal>VALUES</> part of <literal>INSERT ... VALUES</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix constant-folding of <literal>COALESCE()</> expressions (Tom Lane)
+ </para>
+
+ <para>
+ The planner would sometimes attempt to evaluate sub-expressions that
+ in fact could never be reached, possibly leading to unexpected errors.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix postmaster crash when connection acceptance
+ (<function>accept()</> or one of the calls made immediately after it)
+ fails, and the postmaster was compiled with GSSAPI support (Alexander
+ Chernikov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix missed unlink of temporary files when <varname>log_temp_files</>
+ is active (Tom Lane)
+ </para>
+
+ <para>
+ If an error occurred while attempting to emit the log message, the
+ unlink was not done, resulting in accumulation of temp files.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add print functionality for <structname>InhRelation</> nodes (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a failure when <varname>debug_print_parse</> is enabled
+ and certain types of query are executed.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of distance from a point to a horizontal
+ line segment (Tom Lane)
+ </para>
+
+ <para>
+ This bug affected several different geometric distance-measurement
+ operators.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/pgSQL</>'s handling of <quote>simple</>
+ expressions to not fail in recursion or error-recovery cases (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/Python</>'s handling of set-returning functions
+ (Jan Urbanski)
+ </para>
+
+ <para>
+ Attempts to call SPI functions within the iterator generating a set
+ result would fail.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix bug in <filename>contrib/cube</>'s GiST picksplit algorithm
+ (Alexander Korotkov)
+ </para>
+
+ <para>
+ This could result in considerable inefficiency, though not actually
+ incorrect answers, in a GiST index on a <type>cube</> column.
+ If you have such an index, consider <command>REINDEX</>ing it after
+ installing this update.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Don't emit <quote>identifier will be truncated</> notices in
+ <filename>contrib/dblink</> except when creating new connections
+ (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential coredump on missing public key in
+ <filename>contrib/pgcrypto</> (Marti Raudsepp)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix memory leak in <filename>contrib/xml2</>'s XPath query functions
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2010o
+ for DST law changes in Fiji and Samoa;
+ also historical corrections for Hong Kong.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-3-12">
<title>Release 8.3.12</title>
<!-- doc/src/sgml/release-8.4.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-8-4-6">
+ <title>Release 8.4.6</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2010-12-16</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 8.4.5.
+ For information about new features in the 8.4 major release, see
+ <xref linkend="release-8-4">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 8.4.6</title>
+
+ <para>
+ A dump/restore is not required for those running 8.4.X.
+ However, if you are upgrading from a version earlier than 8.4.2,
+ see the release notes for 8.4.2.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Force the default
+ <link linkend="guc-wal-sync-method"><varname>wal_sync_method</></link>
+ to be <literal>fdatasync</> on Linux (Tom Lane, Marti Raudsepp)
+ </para>
+
+ <para>
+ The default on Linux has actually been <literal>fdatasync</> for many
+ years, but recent kernel changes caused <productname>PostgreSQL</> to
+ choose <literal>open_datasync</> instead. This choice did not result
+ in any performance improvement, and caused outright failures on
+ certain filesystems, notably <literal>ext4</> with the
+ <literal>data=journal</> mount option.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix assorted bugs in WAL replay logic for GIN indexes (Tom Lane)
+ </para>
+
+ <para>
+ This could result in <quote>bad buffer id: 0</> failures or
+ corruption of index contents during replication.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix recovery from base backup when the starting checkpoint WAL record
+ is not in the same WAL segment as its redo point (Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix persistent slowdown of autovacuum workers when multiple workers
+ remain active for a long time (Tom Lane)
+ </para>
+
+ <para>
+ The effective <varname>vacuum_cost_limit</> for an autovacuum worker
+ could drop to nearly zero if it processed enough tables, causing it
+ to run extremely slowly.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for detecting register-stack overrun on <literal>IA64</>
+ (Tom Lane)
+ </para>
+
+ <para>
+ The <literal>IA64</> architecture has two hardware stacks. Full
+ prevention of stack-overrun failures requires checking both.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a check for stack overflow in <function>copyObject()</> (Tom Lane)
+ </para>
+
+ <para>
+ Certain code paths could crash due to stack overflow given a
+ sufficiently complex query.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix detection of page splits in temporary GiST indexes (Heikki
+ Linnakangas)
+ </para>
+
+ <para>
+ It is possible to have a <quote>concurrent</> page split in a
+ temporary index, if for example there is an open cursor scanning the
+ index when an insertion is done. GiST failed to detect this case and
+ hence could deliver wrong results when execution of the cursor
+ continued.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix error checking during early connection processing (Tom Lane)
+ </para>
+
+ <para>
+ The check for too many child processes was skipped in some cases,
+ possibly leading to postmaster crash when attempting to add the new
+ child process to fixed-size arrays.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve efficiency of window functions (Tom Lane)
+ </para>
+
+ <para>
+ Certain cases where a large number of tuples needed to be read in
+ advance, but <varname>work_mem</> was large enough to allow them all
+ to be held in memory, were unexpectedly slow.
+ <function>percent_rank()</>, <function>cume_dist()</> and
+ <function>ntile()</> in particular were subject to this problem.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid memory leakage while <command>ANALYZE</>'ing complex index
+ expressions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure an index that uses a whole-row Var still depends on its table
+ (Tom Lane)
+ </para>
+
+ <para>
+ An index declared like <literal>create index i on t (foo(t.*))</>
+ would not automatically get dropped when its table was dropped.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Do not <quote>inline</> a SQL function with multiple <literal>OUT</>
+ parameters (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a possible crash due to loss of information about the
+ expected result rowtype.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Behave correctly if <literal>ORDER BY</>, <literal>LIMIT</>,
+ <literal>FOR UPDATE</>, or <literal>WITH</> is attached to the
+ <literal>VALUES</> part of <literal>INSERT ... VALUES</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix constant-folding of <literal>COALESCE()</> expressions (Tom Lane)
+ </para>
+
+ <para>
+ The planner would sometimes attempt to evaluate sub-expressions that
+ in fact could never be reached, possibly leading to unexpected errors.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix postmaster crash when connection acceptance
+ (<function>accept()</> or one of the calls made immediately after it)
+ fails, and the postmaster was compiled with GSSAPI support (Alexander
+ Chernikov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix missed unlink of temporary files when <varname>log_temp_files</>
+ is active (Tom Lane)
+ </para>
+
+ <para>
+ If an error occurred while attempting to emit the log message, the
+ unlink was not done, resulting in accumulation of temp files.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add print functionality for <structname>InhRelation</> nodes (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a failure when <varname>debug_print_parse</> is enabled
+ and certain types of query are executed.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of distance from a point to a horizontal
+ line segment (Tom Lane)
+ </para>
+
+ <para>
+ This bug affected several different geometric distance-measurement
+ operators.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of transaction status in
+ <application>ecpg</> (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/pgSQL</>'s handling of <quote>simple</>
+ expressions to not fail in recursion or error-recovery cases (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/Python</>'s handling of set-returning functions
+ (Jan Urbanski)
+ </para>
+
+ <para>
+ Attempts to call SPI functions within the iterator generating a set
+ result would fail.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix bug in <filename>contrib/cube</>'s GiST picksplit algorithm
+ (Alexander Korotkov)
+ </para>
+
+ <para>
+ This could result in considerable inefficiency, though not actually
+ incorrect answers, in a GiST index on a <type>cube</> column.
+ If you have such an index, consider <command>REINDEX</>ing it after
+ installing this update.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Don't emit <quote>identifier will be truncated</> notices in
+ <filename>contrib/dblink</> except when creating new connections
+ (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential coredump on missing public key in
+ <filename>contrib/pgcrypto</> (Marti Raudsepp)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix memory leak in <filename>contrib/xml2</>'s XPath query functions
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2010o
+ for DST law changes in Fiji and Samoa;
+ also historical corrections for Hong Kong.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-8-4-5">
<title>Release 8.4.5</title>
<!-- doc/src/sgml/release-9.0.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-9-0-2">
+ <title>Release 9.0.2</title>
+
+ <note>
+ <title>Release date</title>
+ <simpara>2010-12-16</simpara>
+ </note>
+
+ <para>
+ This release contains a variety of fixes from 9.0.1.
+ For information about new features in the 9.0 major release, see
+ <xref linkend="release-9-0">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 9.0.2</title>
+
+ <para>
+ A dump/restore is not required for those running 9.0.X.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Force the default
+ <link linkend="guc-wal-sync-method"><varname>wal_sync_method</></link>
+ to be <literal>fdatasync</> on Linux (Tom Lane, Marti Raudsepp)
+ </para>
+
+ <para>
+ The default on Linux has actually been <literal>fdatasync</> for many
+ years, but recent kernel changes caused <productname>PostgreSQL</> to
+ choose <literal>open_datasync</> instead. This choice did not result
+ in any performance improvement, and caused outright failures on
+ certain filesystems, notably <literal>ext4</> with the
+ <literal>data=journal</> mount option.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <quote>too many KnownAssignedXids</> error during Hot Standby
+ replay (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix race condition in lock acquisition during Hot Standby (Simon Riggs)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid unnecessary conflicts during Hot Standby (Simon Riggs)
+ </para>
+
+ <para>
+ This fixes some cases where replay was considered to conflict with
+ standby queries (causing delay of replay or possibly cancellation of
+ the queries), but there was no real conflict.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix assorted bugs in WAL replay logic for GIN indexes (Tom Lane)
+ </para>
+
+ <para>
+ This could result in <quote>bad buffer id: 0</> failures or
+ corruption of index contents during replication.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix recovery from base backup when the starting checkpoint WAL record
+ is not in the same WAL segment as its redo point (Jeff Davis)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix corner-case bug when streaming replication is enabled immediately
+ after creating the master database cluster (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix persistent slowdown of autovacuum workers when multiple workers
+ remain active for a long time (Tom Lane)
+ </para>
+
+ <para>
+ The effective <varname>vacuum_cost_limit</> for an autovacuum worker
+ could drop to nearly zero if it processed enough tables, causing it
+ to run extremely slowly.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix long-term memory leak in autovacuum launcher (Alvaro Herrera)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid failure when trying to report an impending transaction
+ wraparound condition from outside a transaction (Tom Lane)
+ </para>
+
+ <para>
+ This oversight prevented recovery after transaction wraparound got
+ too close, because database startup processing would fail.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add support for detecting register-stack overrun on <literal>IA64</>
+ (Tom Lane)
+ </para>
+
+ <para>
+ The <literal>IA64</> architecture has two hardware stacks. Full
+ prevention of stack-overrun failures requires checking both.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add a check for stack overflow in <function>copyObject()</> (Tom Lane)
+ </para>
+
+ <para>
+ Certain code paths could crash due to stack overflow given a
+ sufficiently complex query.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix detection of page splits in temporary GiST indexes (Heikki
+ Linnakangas)
+ </para>
+
+ <para>
+ It is possible to have a <quote>concurrent</> page split in a
+ temporary index, if for example there is an open cursor scanning the
+ index when an insertion is done. GiST failed to detect this case and
+ hence could deliver wrong results when execution of the cursor
+ continued.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix error checking during early connection processing (Tom Lane)
+ </para>
+
+ <para>
+ The check for too many child processes was skipped in some cases,
+ possibly leading to postmaster crash when attempting to add the new
+ child process to fixed-size arrays.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve efficiency of window functions (Tom Lane)
+ </para>
+
+ <para>
+ Certain cases where a large number of tuples needed to be read in
+ advance, but <varname>work_mem</> was large enough to allow them all
+ to be held in memory, were unexpectedly slow.
+ <function>percent_rank()</>, <function>cume_dist()</> and
+ <function>ntile()</> in particular were subject to this problem.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid memory leakage while <command>ANALYZE</>'ing complex index
+ expressions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure an index that uses a whole-row Var still depends on its table
+ (Tom Lane)
+ </para>
+
+ <para>
+ An index declared like <literal>create index i on t (foo(t.*))</>
+ would not automatically get dropped when its table was dropped.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add missing support in <command>DROP OWNED BY</> for removing foreign
+ data wrapper/server privileges belonging to a user (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Do not <quote>inline</> a SQL function with multiple <literal>OUT</>
+ parameters (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a possible crash due to loss of information about the
+ expected result rowtype.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix crash when inline-ing a set-returning function whose argument list
+ contains a reference to an inline-able user function (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Behave correctly if <literal>ORDER BY</>, <literal>LIMIT</>,
+ <literal>FOR UPDATE</>, or <literal>WITH</> is attached to the
+ <literal>VALUES</> part of <literal>INSERT ... VALUES</> (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Make the <literal>OFF</> keyword unreserved (Heikki Linnakangas)
+ </para>
+
+ <para>
+ This prevents problems with using <literal>off</> as a variable name in
+ <application>PL/pgSQL</>. That worked before 9.0, but was now broken
+ because <application>PL/pgSQL</> now treats all core reserved words
+ as reserved.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix constant-folding of <literal>COALESCE()</> expressions (Tom Lane)
+ </para>
+
+ <para>
+ The planner would sometimes attempt to evaluate sub-expressions that
+ in fact could never be reached, possibly leading to unexpected errors.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <quote>could not find pathkey item to sort</> planner failure
+ with comparison of whole-row Vars (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix postmaster crash when connection acceptance
+ (<function>accept()</> or one of the calls made immediately after it)
+ fails, and the postmaster was compiled with GSSAPI support (Alexander
+ Chernikov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Retry after receiving an invalid response packet from a RADIUS
+ authentication server (Magnus Hagander)
+ </para>
+
+ <para>
+ This fixes a low-risk potential denial of service condition.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix missed unlink of temporary files when <varname>log_temp_files</>
+ is active (Tom Lane)
+ </para>
+
+ <para>
+ If an error occurred while attempting to emit the log message, the
+ unlink was not done, resulting in accumulation of temp files.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Add print functionality for <structname>InhRelation</> nodes (Tom Lane)
+ </para>
+
+ <para>
+ This avoids a failure when <varname>debug_print_parse</> is enabled
+ and certain types of query are executed.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of distance from a point to a horizontal
+ line segment (Tom Lane)
+ </para>
+
+ <para>
+ This bug affected several different geometric distance-measurement
+ operators.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix incorrect calculation of transaction status in
+ <application>ecpg</> (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix errors in <application>psql</>'s Unicode-escape support (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Speed up parallel <application>pg_restore</> when the archive
+ contains many large objects (blobs) (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/pgSQL</>'s handling of <quote>simple</>
+ expressions to not fail in recursion or error-recovery cases (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/pgSQL</>'s error reporting for no-such-column
+ cases (Tom Lane)
+ </para>
+
+ <para>
+ As of 9.0, it would sometimes report <quote>missing FROM-clause entry
+ for table foo</> when <quote>record foo has no field bar</> would be
+ more appropriate.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/Python</> to honor typmod (i.e., length or
+ precision restrictions) when assigning to tuple fields (Tom Lane)
+ </para>
+
+ <para>
+ This fixes a regression from 8.4.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>PL/Python</>'s handling of set-returning functions
+ (Jan Urbanski)
+ </para>
+
+ <para>
+ Attempts to call SPI functions within the iterator generating a set
+ result would fail.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix bug in <filename>contrib/cube</>'s GiST picksplit algorithm
+ (Alexander Korotkov)
+ </para>
+
+ <para>
+ This could result in considerable inefficiency, though not actually
+ incorrect answers, in a GiST index on a <type>cube</> column.
+ If you have such an index, consider <command>REINDEX</>ing it after
+ installing this update.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Don't emit <quote>identifier will be truncated</> notices in
+ <filename>contrib/dblink</> except when creating new connections
+ (Itagaki Takahiro)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential coredump on missing public key in
+ <filename>contrib/pgcrypto</> (Marti Raudsepp)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix buffer overrun in <filename>contrib/pg_upgrade</> (Hernan Gonzalez)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix memory leak in <filename>contrib/xml2</>'s XPath query functions
+ (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Update time zone data files to <application>tzdata</> release 2010o
+ for DST law changes in Fiji and Samoa;
+ also historical corrections for Hong Kong.
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-9-0-1">
<title>Release 9.0.1</title>
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