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| author | Tom Lane <tgl@sss.pgh.pa.us> | |
| Sun, 6 Aug 2017 21:56:49 +0000 (17:56 -0400) | ||
| committer | Tom Lane <tgl@sss.pgh.pa.us> | |
| Sun, 6 Aug 2017 21:57:07 +0000 (17:57 -0400) |
| doc/src/sgml/release-9.2.sgml | patch | blob | blame | history | |
| doc/src/sgml/release-9.3.sgml | patch | blob | blame | history | |
| doc/src/sgml/release-9.4.sgml | patch | blob | blame | history |
index 804882bd2e9b0455f7d5b67be18428fedb31336d..96b073f81ed1bba0e174ab2b387b721e38e7019e 100644 (file)
<!-- doc/src/sgml/release-9.2.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-9-2-22">
+ <title>Release 9.2.22</title>
+
+ <formalpara>
+ <title>Release date:</title>
+ <para>2017-08-10</para>
+ </formalpara>
+
+ <para>
+ This release contains a variety of fixes from 9.2.21.
+ For information about new features in the 9.2 major release, see
+ <xref linkend="release-9-2">.
+ </para>
+
+ <para>
+ The <productname>PostgreSQL</> community will stop releasing updates
+ for the 9.2.X release series in September 2017.
+ Users are encouraged to update to a newer release branch soon.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 9.2.22</title>
+
+ <para>
+ A dump/restore is not required for those running 9.2.X.
+ </para>
+
+ <para>
+ However, if you are upgrading from a version earlier than 9.2.20,
+ see <xref linkend="release-9-2-20">.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ On Windows, retry process creation if we fail to reserve the address
+ range for our shared memory in the new process (Tom Lane, Amit
+ Kapila)
+ </para>
+
+ <para>
+ This is expected to fix infrequent child-process-launch failures that
+ are probably due to interference from antivirus products.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix low-probability corruption of shared predicate-lock hash table
+ in Windows builds (Thomas Munro, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid logging clean closure of an SSL connection as though
+ it were a connection reset (Michael Paquier)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Prevent sending SSL session tickets to clients (Tom Lane)
+ </para>
+
+ <para>
+ This fix prevents reconnection failures with ticket-aware client-side
+ SSL code.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix code for setting <xref linkend="guc-tcp-keepalives-idle"> on
+ Solaris (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix statistics collector to honor inquiry messages issued just after
+ a postmaster shutdown and immediate restart (Tom Lane)
+ </para>
+
+ <para>
+ Statistics inquiries issued within half a second of the previous
+ postmaster shutdown were effectively ignored.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that the statistics collector's receive buffer size is at
+ least 100KB (Tom Lane)
+ </para>
+
+ <para>
+ This reduces the risk of dropped statistics data on older platforms
+ whose default receive buffer size is less than that.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible creation of an invalid WAL segment when a standby is
+ promoted just after it processes an <literal>XLOG_SWITCH</> WAL
+ record (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <systemitem>SIGHUP</> and <systemitem>SIGUSR1</> handling in
+ walsender processes (Petr Jelinek, Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unnecessarily slow restarts of <application>walreceiver</>
+ processes due to race condition in postmaster (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix cases where an <command>INSERT</> or <command>UPDATE</> assigns
+ to more than one element of a column that is of domain-over-array
+ type (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Move autogenerated array types out of the way during
+ <command>ALTER ... RENAME</> (Vik Fearing)
+ </para>
+
+ <para>
+ Previously, we would rename a conflicting autogenerated array type
+ out of the way during <command>CREATE</>; this fix extends that
+ behavior to renaming operations.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that <command>ALTER USER ... SET</> accepts all the syntax
+ variants that <command>ALTER ROLE ... SET</> does (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Properly update dependency info when changing a datatype I/O
+ function's argument or return type from <type>opaque</> to the
+ correct type (Heikki Linnakangas)
+ </para>
+
+ <para>
+ <command>CREATE TYPE</> updates I/O functions declared in this
+ long-obsolete style, but it forgot to record a dependency on the
+ type, allowing a subsequent <command>DROP TYPE</> to leave broken
+ function definitions behind.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce memory usage when <command>ANALYZE</> processes
+ a <type>tsvector</> column (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unnecessary precision loss and sloppy rounding when multiplying
+ or dividing <type>money</> values by integers or floats (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Tighten checks for whitespace in functions that parse identifiers,
+ such as <function>regprocedurein()</> (Tom Lane)
+ </para>
+
+ <para>
+ Depending on the prevailing locale, these functions could
+ misinterpret fragments of multibyte characters as whitespace.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use relevant <literal>#define</> symbols from Perl while
+ compiling <application>PL/Perl</> (Ashutosh Sharma, Tom Lane)
+ </para>
+
+ <para>
+ This avoids portability problems, typically manifesting as
+ a <quote>handshake</> mismatch during library load, when working with
+ recent Perl versions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <application>psql</>, fix failure when <command>COPY FROM STDIN</>
+ is ended with a keyboard EOF signal and then another <command>COPY
+ FROM STDIN</> is attempted (Thomas Munro)
+ </para>
+
+ <para>
+ This misbehavior was observed on BSD-derived platforms (including
+ macOS), but not on most others.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> to not emit invalid SQL for an empty
+ operator class (Daniel Gustafsson)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> output to stdout on Windows (Kuntal Ghosh)
+ </para>
+
+ <para>
+ A compressed plain-text dump written to stdout would contain corrupt
+ data due to failure to put the file descriptor into binary mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <function>pg_get_ruledef()</> to print correct output for
+ the <literal>ON SELECT</> rule of a view whose columns have been
+ renamed (Tom Lane)
+ </para>
+
+ <para>
+ In some corner cases, <application>pg_dump</> relies
+ on <function>pg_get_ruledef()</> to dump views, so that this error
+ could result in dump/reload failures.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix dumping of function expressions in the <literal>FROM</> clause in
+ cases where the expression does not deparse into something that looks
+ like a function call (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_basebackup</> output to stdout on Windows
+ (Haribabu Kommi)
+ </para>
+
+ <para>
+ A backup written to stdout would contain corrupt data due to failure
+ to put the file descriptor into binary mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_upgrade</> to ensure that the ending WAL record
+ does not have <xref linkend="guc-wal-level"> = <literal>minimum</>
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ This condition could prevent upgraded standby servers from
+ reconnecting.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Always use <option>-fPIC</>, not <option>-fpic</>, when building
+ shared libraries with gcc (Tom Lane)
+ </para>
+
+ <para>
+ This supports larger extension libraries on platforms where it makes
+ a difference.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unescaped-braces issue in our build scripts for Microsoft MSVC,
+ to avoid a warning or error from recent Perl versions (Andrew
+ Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, handle the case where the <application>openssl</>
+ library is not within a <filename>VC</> subdirectory (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, add proper include path for <application>libxml2</>
+ header files (Andrew Dunstan)
+ </para>
+
+ <para>
+ This fixes a former need to move things around in standard Windows
+ installations of <application>libxml2</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, recognize a Tcl library that is
+ named <filename>tcl86.lib</> (Noah Misch)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-9-2-21">
<title>Release 9.2.21</title>
index 700ca08114b403a11b6290ae22cddfa354d5da9e..80d486423019e65a501d7ac9dce34a0bfbea0839 100644 (file)
<!-- doc/src/sgml/release-9.3.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-9-3-18">
+ <title>Release 9.3.18</title>
+
+ <formalpara>
+ <title>Release date:</title>
+ <para>2017-08-10</para>
+ </formalpara>
+
+ <para>
+ This release contains a variety of fixes from 9.3.17.
+ For information about new features in the 9.3 major release, see
+ <xref linkend="release-9-3">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 9.3.18</title>
+
+ <para>
+ A dump/restore is not required for those running 9.3.X.
+ </para>
+
+ <para>
+ However, if you are upgrading from a version earlier than 9.3.16,
+ see <xref linkend="release-9-3-16">.
+ </para>
+
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix concurrent locking of tuple update chains (Álvaro Herrera)
+ </para>
+
+ <para>
+ If several sessions concurrently lock a tuple update chain with
+ nonconflicting lock modes using an old snapshot, and they all
+ succeed, it was possible for some of them to nonetheless fail (and
+ conclude there is no live tuple version) due to a race condition.
+ This had consequences such as foreign-key checks failing to see a
+ tuple that definitely exists but is being updated concurrently.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential data corruption when freezing a tuple whose XMAX is a
+ multixact with exactly one still-interesting member (Teodor Sigaev)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ On Windows, retry process creation if we fail to reserve the address
+ range for our shared memory in the new process (Tom Lane, Amit
+ Kapila)
+ </para>
+
+ <para>
+ This is expected to fix infrequent child-process-launch failures that
+ are probably due to interference from antivirus products.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix low-probability corruption of shared predicate-lock hash table
+ in Windows builds (Thomas Munro, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid logging clean closure of an SSL connection as though
+ it were a connection reset (Michael Paquier)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Prevent sending SSL session tickets to clients (Tom Lane)
+ </para>
+
+ <para>
+ This fix prevents reconnection failures with ticket-aware client-side
+ SSL code.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix code for setting <xref linkend="guc-tcp-keepalives-idle"> on
+ Solaris (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix statistics collector to honor inquiry messages issued just after
+ a postmaster shutdown and immediate restart (Tom Lane)
+ </para>
+
+ <para>
+ Statistics inquiries issued within half a second of the previous
+ postmaster shutdown were effectively ignored.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that the statistics collector's receive buffer size is at
+ least 100KB (Tom Lane)
+ </para>
+
+ <para>
+ This reduces the risk of dropped statistics data on older platforms
+ whose default receive buffer size is less than that.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible creation of an invalid WAL segment when a standby is
+ promoted just after it processes an <literal>XLOG_SWITCH</> WAL
+ record (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <systemitem>SIGHUP</> and <systemitem>SIGUSR1</> handling in
+ walsender processes (Petr Jelinek, Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unnecessarily slow restarts of <application>walreceiver</>
+ processes due to race condition in postmaster (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix cases where an <command>INSERT</> or <command>UPDATE</> assigns
+ to more than one element of a column that is of domain-over-array
+ type (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow window functions to be used in sub-<literal>SELECT</>s that
+ are within the arguments of an aggregate function (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Move autogenerated array types out of the way during
+ <command>ALTER ... RENAME</> (Vik Fearing)
+ </para>
+
+ <para>
+ Previously, we would rename a conflicting autogenerated array type
+ out of the way during <command>CREATE</>; this fix extends that
+ behavior to renaming operations.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that <command>ALTER USER ... SET</> accepts all the syntax
+ variants that <command>ALTER ROLE ... SET</> does (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Properly update dependency info when changing a datatype I/O
+ function's argument or return type from <type>opaque</> to the
+ correct type (Heikki Linnakangas)
+ </para>
+
+ <para>
+ <command>CREATE TYPE</> updates I/O functions declared in this
+ long-obsolete style, but it forgot to record a dependency on the
+ type, allowing a subsequent <command>DROP TYPE</> to leave broken
+ function definitions behind.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce memory usage when <command>ANALYZE</> processes
+ a <type>tsvector</> column (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unnecessary precision loss and sloppy rounding when multiplying
+ or dividing <type>money</> values by integers or floats (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Tighten checks for whitespace in functions that parse identifiers,
+ such as <function>regprocedurein()</> (Tom Lane)
+ </para>
+
+ <para>
+ Depending on the prevailing locale, these functions could
+ misinterpret fragments of multibyte characters as whitespace.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use relevant <literal>#define</> symbols from Perl while
+ compiling <application>PL/Perl</> (Ashutosh Sharma, Tom Lane)
+ </para>
+
+ <para>
+ This avoids portability problems, typically manifesting as
+ a <quote>handshake</> mismatch during library load, when working with
+ recent Perl versions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <application>libpq</>, reset GSS/SASL and SSPI authentication
+ state properly after a failed connection attempt (Michael Paquier)
+ </para>
+
+ <para>
+ Failure to do this meant that when falling back from SSL to non-SSL
+ connections, a GSS/SASL failure in the SSL attempt would always cause
+ the non-SSL attempt to fail. SSPI did not fail, but it leaked memory.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <application>psql</>, fix failure when <command>COPY FROM STDIN</>
+ is ended with a keyboard EOF signal and then another <command>COPY
+ FROM STDIN</> is attempted (Thomas Munro)
+ </para>
+
+ <para>
+ This misbehavior was observed on BSD-derived platforms (including
+ macOS), but not on most others.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> and <application>pg_restore</> to
+ emit <command>REFRESH MATERIALIZED VIEW</> commands last (Tom Lane)
+ </para>
+
+ <para>
+ This prevents errors during dump/restore when a materialized view
+ refers to tables owned by a different user.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> with the <option>--clean</> option to
+ drop event triggers as expected (Tom Lane)
+ </para>
+
+ <para>
+ It also now correctly assigns ownership of event triggers; before,
+ they were restored as being owned by the superuser running the
+ restore script.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> to not emit invalid SQL for an empty
+ operator class (Daniel Gustafsson)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> output to stdout on Windows (Kuntal Ghosh)
+ </para>
+
+ <para>
+ A compressed plain-text dump written to stdout would contain corrupt
+ data due to failure to put the file descriptor into binary mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <function>pg_get_ruledef()</> to print correct output for
+ the <literal>ON SELECT</> rule of a view whose columns have been
+ renamed (Tom Lane)
+ </para>
+
+ <para>
+ In some corner cases, <application>pg_dump</> relies
+ on <function>pg_get_ruledef()</> to dump views, so that this error
+ could result in dump/reload failures.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix dumping of outer joins with empty constraints, such as the result
+ of a <literal>NATURAL LEFT JOIN</> with no common columns (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix dumping of function expressions in the <literal>FROM</> clause in
+ cases where the expression does not deparse into something that looks
+ like a function call (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_basebackup</> output to stdout on Windows
+ (Haribabu Kommi)
+ </para>
+
+ <para>
+ A backup written to stdout would contain corrupt data due to failure
+ to put the file descriptor into binary mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_upgrade</> to ensure that the ending WAL record
+ does not have <xref linkend="guc-wal-level"> = <literal>minimum</>
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ This condition could prevent upgraded standby servers from
+ reconnecting.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <filename>postgres_fdw</>, re-establish connections to remote
+ servers after <command>ALTER SERVER</> or <command>ALTER USER
+ MAPPING</> commands (Kyotaro Horiguchi)
+ </para>
+
+ <para>
+ This ensures that option changes affecting connection parameters will
+ be applied promptly.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <filename>postgres_fdw</>, allow cancellation of remote
+ transaction control commands (Robert Haas, Rafia Sabih)
+ </para>
+
+ <para>
+ This change allows us to quickly escape a wait for an unresponsive
+ remote server in many more cases than previously.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Always use <option>-fPIC</>, not <option>-fpic</>, when building
+ shared libraries with gcc (Tom Lane)
+ </para>
+
+ <para>
+ This supports larger extension libraries on platforms where it makes
+ a difference.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unescaped-braces issue in our build scripts for Microsoft MSVC,
+ to avoid a warning or error from recent Perl versions (Andrew
+ Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, handle the case where the <application>openssl</>
+ library is not within a <filename>VC</> subdirectory (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, add proper include path for <application>libxml2</>
+ header files (Andrew Dunstan)
+ </para>
+
+ <para>
+ This fixes a former need to move things around in standard Windows
+ installations of <application>libxml2</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, recognize a Tcl library that is
+ named <filename>tcl86.lib</> (Noah Misch)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-9-3-17">
<title>Release 9.3.17</title>
index 41644de682f98bcb1d97ed72933d8d4ed1e25cf1..54265e677a794d509f3631276a6cba8cb927afcd 100644 (file)
<!-- doc/src/sgml/release-9.4.sgml -->
<!-- See header comment in release.sgml about typical markup -->
+ <sect1 id="release-9-4-13">
+ <title>Release 9.4.13</title>
+
+ <formalpara>
+ <title>Release date:</title>
+ <para>2017-08-10</para>
+ </formalpara>
+
+ <para>
+ This release contains a variety of fixes from 9.4.12.
+ For information about new features in the 9.4 major release, see
+ <xref linkend="release-9-4">.
+ </para>
+
+ <sect2>
+ <title>Migration to Version 9.4.13</title>
+
+ <para>
+ A dump/restore is not required for those running 9.4.X.
+ </para>
+
+ <para>
+ However, if you are upgrading from a version earlier than 9.4.12,
+ see <xref linkend="release-9-4-12">.
+ </para>
+ </sect2>
+
+ <sect2>
+ <title>Changes</title>
+
+ <itemizedlist>
+
+ <listitem>
+ <para>
+ Fix concurrent locking of tuple update chains (Álvaro Herrera)
+ </para>
+
+ <para>
+ If several sessions concurrently lock a tuple update chain with
+ nonconflicting lock modes using an old snapshot, and they all
+ succeed, it was possible for some of them to nonetheless fail (and
+ conclude there is no live tuple version) due to a race condition.
+ This had consequences such as foreign-key checks failing to see a
+ tuple that definitely exists but is being updated concurrently.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix potential data corruption when freezing a tuple whose XMAX is a
+ multixact with exactly one still-interesting member (Teodor Sigaev)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid integer overflow and ensuing crash when sorting more than one
+ billion tuples in-memory (Sergey Koposov)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ On Windows, retry process creation if we fail to reserve the address
+ range for our shared memory in the new process (Tom Lane, Amit
+ Kapila)
+ </para>
+
+ <para>
+ This is expected to fix infrequent child-process-launch failures that
+ are probably due to interference from antivirus products.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix low-probability corruption of shared predicate-lock hash table
+ in Windows builds (Thomas Munro, Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Avoid logging clean closure of an SSL connection as though
+ it were a connection reset (Michael Paquier)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Prevent sending SSL session tickets to clients (Tom Lane)
+ </para>
+
+ <para>
+ This fix prevents reconnection failures with ticket-aware client-side
+ SSL code.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix code for setting <xref linkend="guc-tcp-keepalives-idle"> on
+ Solaris (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix statistics collector to honor inquiry messages issued just after
+ a postmaster shutdown and immediate restart (Tom Lane)
+ </para>
+
+ <para>
+ Statistics inquiries issued within half a second of the previous
+ postmaster shutdown were effectively ignored.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that the statistics collector's receive buffer size is at
+ least 100KB (Tom Lane)
+ </para>
+
+ <para>
+ This reduces the risk of dropped statistics data on older platforms
+ whose default receive buffer size is less than that.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix possible creation of an invalid WAL segment when a standby is
+ promoted just after it processes an <literal>XLOG_SWITCH</> WAL
+ record (Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>walsender</> to exit promptly when client requests
+ shutdown (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <systemitem>SIGHUP</> and <systemitem>SIGUSR1</> handling in
+ walsender processes (Petr Jelinek, Andres Freund)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Prevent walsender-triggered panics during shutdown checkpoints
+ (Andres Freund, Michael Paquier)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unnecessarily slow restarts of <application>walreceiver</>
+ processes due to race condition in postmaster (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+<!--
+Author: Andres Freund <andres@anarazel.de>
+Branch: REL9_4_STABLE [23a2b818f] 2017-08-05 14:56:40 -0700
+-->
+ <para>
+ Fix logical decoding failure with very wide tuples (Andres Freund)
+ </para>
+
+ <para>
+ Logical decoding crashed on tuples that are wider than 64KB (after
+ compression, but with all data in-line). The case arises only
+ when <literal>REPLICA IDENTITY FULL</> is enabled for a table
+ containing such tuples.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix leakage of small subtransactions spilled to disk during logical
+ decoding (Andres Freund)
+ </para>
+
+ <para>
+ This resulted in temporary files consuming excessive disk space.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce the work needed to build snapshots during creation of
+ logical-decoding slots (Andres Freund, Petr Jelinek)
+ </para>
+
+ <para>
+ The previous algorithm was infeasibly expensive on a server with a
+ lot of open transactions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix race condition that could indefinitely delay creation of
+ logical-decoding slots (Andres Freund, Petr Jelinek)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce overhead in processing syscache invalidation events (Tom Lane)
+ </para>
+
+ <para>
+ This is particularly helpful for logical decoding, which triggers
+ frequent cache invalidation.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix cases where an <command>INSERT</> or <command>UPDATE</> assigns
+ to more than one element of a column that is of domain-over-array
+ type (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Allow window functions to be used in sub-<literal>SELECT</>s that
+ are within the arguments of an aggregate function (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Move autogenerated array types out of the way during
+ <command>ALTER ... RENAME</> (Vik Fearing)
+ </para>
+
+ <para>
+ Previously, we would rename a conflicting autogenerated array type
+ out of the way during <command>CREATE</>; this fix extends that
+ behavior to renaming operations.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Ensure that <command>ALTER USER ... SET</> accepts all the syntax
+ variants that <command>ALTER ROLE ... SET</> does (Peter Eisentraut)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Properly update dependency info when changing a datatype I/O
+ function's argument or return type from <type>opaque</> to the
+ correct type (Heikki Linnakangas)
+ </para>
+
+ <para>
+ <command>CREATE TYPE</> updates I/O functions declared in this
+ long-obsolete style, but it forgot to record a dependency on the
+ type, allowing a subsequent <command>DROP TYPE</> to leave broken
+ function definitions behind.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Reduce memory usage when <command>ANALYZE</> processes
+ a <type>tsvector</> column (Heikki Linnakangas)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unnecessary precision loss and sloppy rounding when multiplying
+ or dividing <type>money</> values by integers or floats (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Tighten checks for whitespace in functions that parse identifiers,
+ such as <function>regprocedurein()</> (Tom Lane)
+ </para>
+
+ <para>
+ Depending on the prevailing locale, these functions could
+ misinterpret fragments of multibyte characters as whitespace.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Use relevant <literal>#define</> symbols from Perl while
+ compiling <application>PL/Perl</> (Ashutosh Sharma, Tom Lane)
+ </para>
+
+ <para>
+ This avoids portability problems, typically manifesting as
+ a <quote>handshake</> mismatch during library load, when working with
+ recent Perl versions.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <application>libpq</>, reset GSS/SASL and SSPI authentication
+ state properly after a failed connection attempt (Michael Paquier)
+ </para>
+
+ <para>
+ Failure to do this meant that when falling back from SSL to non-SSL
+ connections, a GSS/SASL failure in the SSL attempt would always cause
+ the non-SSL attempt to fail. SSPI did not fail, but it leaked memory.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <application>psql</>, fix failure when <command>COPY FROM STDIN</>
+ is ended with a keyboard EOF signal and then another <command>COPY
+ FROM STDIN</> is attempted (Thomas Munro)
+ </para>
+
+ <para>
+ This misbehavior was observed on BSD-derived platforms (including
+ macOS), but not on most others.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> and <application>pg_restore</> to
+ emit <command>REFRESH MATERIALIZED VIEW</> commands last (Tom Lane)
+ </para>
+
+ <para>
+ This prevents errors during dump/restore when a materialized view
+ refers to tables owned by a different user.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Improve <application>pg_dump</>/<application>pg_restore</>'s
+ reporting of error conditions originating in <application>zlib</>
+ (Vladimir Kunschikov, Álvaro Herrera)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> with the <option>--clean</> option to
+ drop event triggers as expected (Tom Lane)
+ </para>
+
+ <para>
+ It also now correctly assigns ownership of event triggers; before,
+ they were restored as being owned by the superuser running the
+ restore script.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> to not emit invalid SQL for an empty
+ operator class (Daniel Gustafsson)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_dump</> output to stdout on Windows (Kuntal Ghosh)
+ </para>
+
+ <para>
+ A compressed plain-text dump written to stdout would contain corrupt
+ data due to failure to put the file descriptor into binary mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <function>pg_get_ruledef()</> to print correct output for
+ the <literal>ON SELECT</> rule of a view whose columns have been
+ renamed (Tom Lane)
+ </para>
+
+ <para>
+ In some corner cases, <application>pg_dump</> relies
+ on <function>pg_get_ruledef()</> to dump views, so that this error
+ could result in dump/reload failures.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix dumping of outer joins with empty constraints, such as the result
+ of a <literal>NATURAL LEFT JOIN</> with no common columns (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix dumping of function expressions in the <literal>FROM</> clause in
+ cases where the expression does not deparse into something that looks
+ like a function call (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_basebackup</> output to stdout on Windows
+ (Haribabu Kommi)
+ </para>
+
+ <para>
+ A backup written to stdout would contain corrupt data due to failure
+ to put the file descriptor into binary mode.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix <application>pg_upgrade</> to ensure that the ending WAL record
+ does not have <xref linkend="guc-wal-level"> = <literal>minimum</>
+ (Bruce Momjian)
+ </para>
+
+ <para>
+ This condition could prevent upgraded standby servers from
+ reconnecting.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <filename>postgres_fdw</>, re-establish connections to remote
+ servers after <command>ALTER SERVER</> or <command>ALTER USER
+ MAPPING</> commands (Kyotaro Horiguchi)
+ </para>
+
+ <para>
+ This ensures that option changes affecting connection parameters will
+ be applied promptly.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In <filename>postgres_fdw</>, allow cancellation of remote
+ transaction control commands (Robert Haas, Rafia Sabih)
+ </para>
+
+ <para>
+ This change allows us to quickly escape a wait for an unresponsive
+ remote server in many more cases than previously.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Increase <literal>MAX_SYSCACHE_CALLBACKS</> to provide more room for
+ extensions (Tom Lane)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Always use <option>-fPIC</>, not <option>-fpic</>, when building
+ shared libraries with gcc (Tom Lane)
+ </para>
+
+ <para>
+ This supports larger extension libraries on platforms where it makes
+ a difference.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ Fix unescaped-braces issue in our build scripts for Microsoft MSVC,
+ to avoid a warning or error from recent Perl versions (Andrew
+ Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, handle the case where the <application>openssl</>
+ library is not within a <filename>VC</> subdirectory (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, add proper include path for <application>libxml2</>
+ header files (Andrew Dunstan)
+ </para>
+
+ <para>
+ This fixes a former need to move things around in standard Windows
+ installations of <application>libxml2</>.
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, recognize a Tcl library that is
+ named <filename>tcl86.lib</> (Noah Misch)
+ </para>
+ </listitem>
+
+ <listitem>
+ <para>
+ In MSVC builds, honor <literal>PROVE_FLAGS</> settings
+ on <filename>vcregress.pl</>'s command line (Andrew Dunstan)
+ </para>
+ </listitem>
+
+ </itemizedlist>
+
+ </sect2>
+ </sect1>
+
<sect1 id="release-9-4-12">
<title>Release 9.4.12</title>