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Release notes for 9.6.4, 9.5.8, 9.4.13, 9.3.18, 9.2.22.

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341
doc/src/sgml/release-9.2.sgml
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@ -1,6 +1,347 @@
<!-- 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>

434
doc/src/sgml/release-9.3.sgml
View File

@ -1,6 +1,440 @@
<!-- 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 (&Aacute;lvaro 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>

534
doc/src/sgml/release-9.4.sgml
View File

@ -1,6 +1,540 @@
<!-- 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 (&Aacute;lvaro 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, &Aacute;lvaro 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>

568
doc/src/sgml/release-9.5.sgml
View File

@ -1,6 +1,574 @@
<!-- doc/src/sgml/release-9.5.sgml -->
<!-- See header comment in release.sgml about typical markup -->
<sect1 id="release-9-5-8">
<title>Release 9.5.8</title>
<formalpara>
<title>Release date:</title>
<para>2017-08-10</para>
</formalpara>
<para>
This release contains a variety of fixes from 9.5.7.
For information about new features in the 9.5 major release, see
<xref linkend="release-9-5">.
</para>
<sect2>
<title>Migration to Version 9.5.8</title>
<para>
A dump/restore is not required for those running 9.5.X.
</para>
<para>
However, if you are upgrading from a version earlier than 9.5.7,
see <xref linkend="release-9-5-7">.
</para>
</sect2>
<sect2>
<title>Changes</title>
<itemizedlist>
<listitem>
<para>
Correct the documentation about the process for upgrading standby
servers with <application>pg_upgrade</> (Bruce Momjian)
</para>
<para>
The previous documentation instructed users to start/stop the primary
server after running <application>pg_upgrade</> but before syncing
the standby servers. This sequence is unsafe.
</para>
</listitem>
<listitem>
<para>
Fix concurrent locking of tuple update chains (&Aacute;lvaro 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>
<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>
Fix dangling pointer in <command>ALTER TABLE</> when there is a
comment on a constraint belonging to the table (David Rowley)
</para>
<para>
Re-applying the comment to the reconstructed constraint could fail
with a weird error message, or even crash.
</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, &Aacute;lvaro 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_rewind</> to correctly handle files exceeding 2GB
(Kuntal Ghosh, Michael Paquier)
</para>
<para>
Ordinarily such files won't appear in <productname>PostgreSQL</> data
directories, but they could be present in some cases.
</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>
Fix <application>pg_xlogdump</>'s computation of WAL record length
(Andres Freund)
</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>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL9_5_STABLE [af1f18259] 2017-08-02 15:07:20 -0400
Branch: REL9_4_STABLE [8892170e7] 2017-08-02 15:07:20 -0400
Branch: REL9_3_STABLE [3d9ae20e7] 2017-08-02 15:07:20 -0400
Branch: REL9_2_STABLE [1188b9b2c] 2017-08-02 15:07:21 -0400
-->
<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-9-5-7">
<title>Release 9.5.7</title>

38
doc/src/sgml/release-9.6.sgml
View File

@ -216,10 +216,8 @@ Branch: REL9_2_STABLE [439b6363d] 2017-06-26 16:17:06 -0400
</para>
<para>
Confusion between permanent and temporary statistics file timestamps
allowed the collector to think it had already written data satisfying
the request, when it had not. This only affected inquiries issued
within half a second of the previous postmaster shutdown.
Statistics inquiries issued within half a second of the previous
postmaster shutdown were effectively ignored.
</para>
</listitem>
@ -458,11 +456,6 @@ Branch: REL9_3_STABLE [66dee28b4] 2017-06-27 17:51:11 -0400
Allow window functions to be used in sub-<literal>SELECT</>s that
are within the arguments of an aggregate function (Tom Lane)
</para>
<para>
This case is perfectly valid, but it was accidentally rejected by an
overly-aggressive error check.
</para>
</listitem>
<listitem>
@ -556,8 +549,8 @@ Branch: REL9_6_STABLE [1f220c390] 2017-08-03 13:25:32 -0400
But this is wrong for <command>CREATE FOREIGN TABLE</>, where there's
no reason to suppose that the underlying table is empty, and even if
it is it's no business of ours to decide that the constraint can be
treated as valid going forward. Skip the <quote>optimization</> in
that case.
treated as valid going forward. Skip this <quote>optimization</> for
foreign tables.
</para>
</listitem>
@ -716,7 +709,7 @@ Branch: REL9_2_STABLE [07477130e] 2017-05-17 12:24:19 -0400
</para>
<para>
This misbehavior is observed on BSD-derived platforms (including
This misbehavior was observed on BSD-derived platforms (including
macOS), but not on most others.
</para>
</listitem>
@ -863,7 +856,7 @@ Branch: REL9_3_STABLE [e947838ae] 2017-07-20 11:29:36 -0400
-->
<para>
Fix dumping of outer joins with empty constraints, such as the result
of a <literal>NATURAL JOIN</> with no common columns (Tom Lane)
of a <literal>NATURAL LEFT JOIN</> with no common columns (Tom Lane)
</para>
</listitem>
@ -994,8 +987,8 @@ Branch: REL9_4_STABLE [c02c450cf] 2017-06-07 15:40:35 -0400
Branch: REL9_3_STABLE [fc267a0c3] 2017-06-07 15:41:05 -0400
-->
<para>
In <filename>postgres_fdw</>, allow cancellation of transaction
control commands (Robert Haas, Rafia Sabih)
In <filename>postgres_fdw</>, allow cancellation of remote
transaction control commands (Robert Haas, Rafia Sabih)
</para>
<para>
@ -1041,21 +1034,6 @@ Branch: REL9_2_STABLE [a378b9bc2] 2017-06-01 13:32:56 -0400
<listitem>
<!--
Author: Tom Lane <tgl@sss.pgh.pa.us>
Branch: REL9_5_STABLE [af1f18259] 2017-08-02 15:07:20 -0400
Branch: REL9_4_STABLE [8892170e7] 2017-08-02 15:07:20 -0400
Branch: REL9_3_STABLE [3d9ae20e7] 2017-08-02 15:07:20 -0400
Branch: REL9_2_STABLE [1188b9b2c] 2017-08-02 15:07:21 -0400
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<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>
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Author: Andrew Dunstan <andrew@dunslane.net>
Branch: master [614350a3a] 2017-06-05 14:24:42 -0400
Branch: REL9_6_STABLE [b64ff9c5a] 2017-06-05 14:27:59 -0400