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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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Tom Lane
2017-08-06 17:56:49 -04:00
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<!-- 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>