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Release notes for 11.3, 10.8, 9.6.13, 9.5.17, 9.4.22.
This commit is contained in:
Tom Lane
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<!-- doc/src/sgml/release-9.4.sgml -->
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<!-- doc/src/sgml/release-9.4.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-9-4-22">
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<title>Release 9.4.22</title>
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<formalpara>
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<title>Release date:</title>
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<para>2019-05-09</para>
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</formalpara>
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<para>
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This release contains a variety of fixes from 9.4.21.
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For information about new features in the 9.4 major release, see
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<xref linkend="release-9-4">.
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</para>
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<para>
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The <productname>PostgreSQL</productname> community will stop
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releasing updates for the 9.4.X release series in February 2020.
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Users are encouraged to update to a newer release branch soon.
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</para>
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<sect2>
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<title>Migration to Version 9.4.22</title>
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<para>
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A dump/restore is not required for those running 9.4.X.
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</para>
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<para>
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However, if you are upgrading from a version earlier than 9.4.18,
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see <xref linkend="release-9-4-18">.
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</para>
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</sect2>
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<sect2>
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<title>Changes</title>
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<itemizedlist>
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<listitem>
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<para>
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Fix behavior for an <command>UPDATE</command>
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or <command>DELETE</command> on an inheritance tree or partitioned
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table in which every table can be excluded (Amit Langote, Tom Lane)
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</para>
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<para>
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In such cases, the query did not report the correct set of output
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columns when a <literal>RETURNING</literal> clause was present, and
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if there were any statement-level triggers that should be fired, it
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didn't fire them.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix handling of explicit <literal>DEFAULT</literal> items in
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an <command>INSERT ... VALUES</command> command with
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multiple <literal>VALUES</literal> rows, if the target relation is
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an updatable view (Amit Langote, Dean Rasheed)
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</para>
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<para>
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When the updatable view has no default for the column but its
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underlying table has one, a single-row <command>INSERT
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... VALUES</command> will use the underlying table's default.
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In the multi-row case, however, NULL was always used. Correct it to
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act like the single-row case.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix <command>CREATE VIEW</command> to allow zero-column views
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(Ashutosh Sharma)
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</para>
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<para>
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We should allow this for consistency with allowing zero-column
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tables. Since a table can be converted to a view, zero-column views
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could be created even with the restriction in place, leading to
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dump/reload failures.
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</para>
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</listitem>
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<listitem>
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<para>
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Accept XML documents as valid values of type <type>xml</type>
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when <varname>xmloption</varname> is set
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to <literal>content</literal>, as required by SQL:2006 and later
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(Chapman Flack)
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</para>
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<para>
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Previously <productname>PostgreSQL</productname> followed the
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SQL:2003 definition, which doesn't allow this. But that creates a
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serious problem for dump/restore: there is no setting
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of <varname>xmloption</varname> that will accept all valid XML data.
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Hence, switch to the 2006 definition.
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</para>
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<para>
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<application>pg_dump</application> is also modified to emit
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<literal>SET xmloption = content</literal> while restoring data,
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ensuring that dump/restore works even if the prevailing
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setting is <literal>document</literal>.
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</para>
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</listitem>
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<listitem>
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<para>
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Improve server's startup-time checks for whether a pre-existing
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shared memory segment is still in use (Noah Misch)
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</para>
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<para>
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The postmaster is now more likely to detect that there are still
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active processes from a previous postmaster incarnation, even if
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the <filename>postmaster.pid</filename> file has been removed.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix incompatibility of GIN-index WAL records (Alexander Korotkov)
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</para>
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<para>
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A fix applied in February's minor releases was not sufficiently
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careful about backwards compatibility, leading to problems if a
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standby server of that vintage reads GIN page-deletion WAL records
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generated by a primary server of a previous minor release.
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</para>
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</listitem>
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<listitem>
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<para>
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Tolerate <literal>EINVAL</literal> and <literal>ENOSYS</literal>
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error results, where appropriate, for <function>fsync</function>
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and <function>sync_file_range</function> calls
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(Thomas Munro, James Sewell)
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</para>
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<para>
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The previous change to panic on file synchronization failures turns
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out to have been excessively paranoid for certain cases where a
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failure is predictable and essentially means <quote>operation not
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supported</quote>.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix <quote>failed to build any <replaceable>N</replaceable>-way
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joins</quote> planner failures with lateral references leading out
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of <literal>FULL</literal> outer joins (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Avoid O(N^2) performance issue when rolling back a transaction that
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created many tables (Tomas Vondra)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix race conditions in management of dynamic shared memory
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(Thomas Munro)
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</para>
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<para>
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These could lead to <quote>dsa_area could not attach to
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segment</quote> or <quote>cannot unpin a segment that is not
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pinned</quote> errors.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix race condition in which a hot-standby postmaster could fail to
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shut down after receiving a smart-shutdown request (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Tighten validation of encoded SCRAM-SHA-256 and MD5 passwords
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(Jonathan Katz)
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</para>
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<para>
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A password string that had the right initial characters could be
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mistaken for one that is correctly hashed into SCRAM-SHA-256 or MD5
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format. The password would be accepted but would be unusable later.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix handling of <varname>lc_time</varname> settings that imply an
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encoding different from the database's encoding (Juan José
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Santamaría Flecha, Tom Lane)
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</para>
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<para>
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Localized month or day names that include non-ASCII characters
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previously caused unexpected errors or wrong output in such locales.
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</para>
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</listitem>
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<listitem>
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<para>
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Disallow <literal>NaN</literal> as a value for floating-point server
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parameters (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Rearrange <command>REINDEX</command> processing to avoid assertion
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failures when reindexing individual indexes
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of <structname>pg_class</structname> (Andres Freund, Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Fix planner assertion failure for parameterized dummy paths (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Insert correct test function in the result
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of <function>SnapBuildInitialSnapshot()</function> (Antonin Houska)
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</para>
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<para>
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No core code cares about this, but some extensions do.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix intermittent <quote>could not reattach to shared memory</quote>
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session startup failures on Windows (Noah Misch)
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</para>
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<para>
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A previously unrecognized source of these failures is creation of
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thread stacks for a process's default thread pool. Arrange for such
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stacks to be allocated in a different memory region.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix error detection in directory scanning on Windows (Konstantin
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Knizhnik)
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</para>
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<para>
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Errors, such as lack of permissions to read the directory, were not
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detected or reported correctly; instead the code silently acted as
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though the directory were empty.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix grammar problems in <application>ecpg</application> (Tom Lane)
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</para>
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<para>
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A missing semicolon led to mistranslation
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of <literal>SET <replaceable>variable</replaceable> =
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DEFAULT</literal> (but
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not <literal>SET <replaceable>variable</replaceable> TO
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DEFAULT</literal>) in <application>ecpg</application> programs,
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producing syntactically invalid output that the server would reject.
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Additionally, in a <command>DROP TYPE</command> or <command>DROP
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DOMAIN</command> command that listed multiple type names, only the
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first type name was actually processed.
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</para>
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</listitem>
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<listitem>
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<para>
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Fix possible buffer overruns in <application>ecpg</application>'s
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processing of include filenames (Liu Huailing, Fei Wu)
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</para>
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</listitem>
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<listitem>
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<para>
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Avoid crash in <filename>contrib/vacuumlo</filename> if
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an <function>lo_unlink()</function> call failed (Tom Lane)
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</para>
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</listitem>
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<listitem>
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<para>
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Sync our copy of the timezone library with IANA tzcode release 2019a
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(Tom Lane)
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</para>
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<para>
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This corrects a small bug in <application>zic</application> that
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caused it to output an incorrect year-2440 transition in
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the <literal>Africa/Casablanca</literal> zone, and adds support
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for <application>zic</application>'s new <option>-r</option> option.
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</para>
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</listitem>
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<listitem>
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<para>
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Update time zone data files to <application>tzdata</application>
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release 2019a for DST law changes in Palestine and Metlakatla,
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plus historical corrections for Israel.
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</para>
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<para>
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<literal>Etc/UCT</literal> is now a backward-compatibility link
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to <literal>Etc/UTC</literal>, instead of being a separate zone that
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generates the abbreviation <literal>UCT</literal>, which nowadays is
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typically a typo. <productname>PostgreSQL</productname> will still
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accept <literal>UCT</literal> as an input zone abbreviation, but it
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won't output it.
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</para>
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</listitem>
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</itemizedlist>
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</sect2>
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</sect1>
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<sect1 id="release-9-4-21">
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<sect1 id="release-9-4-21">
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<title>Release 9.4.21</title>
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<title>Release 9.4.21</title>
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Loading…
x
Reference in New Issue
Block a user