mirror of
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Release notes for 10.4, 9.6.9, 9.5.13, 9.4.18, 9.3.23.
This commit is contained in:
Tom Lane
parent
289bafdbc4
commit
5c4049472d
@ -1,6 +1,373 @@
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<!-- doc/src/sgml/release-9.3.sgml -->
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<!-- See header comment in release.sgml about typical markup -->
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<sect1 id="release-9-3-23">
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<title>Release 9.3.23</title>
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<formalpara>
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<title>Release date:</title>
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<para>2018-05-10</para>
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</formalpara>
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<para>
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This release contains a variety of fixes from 9.3.22.
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For information about new features in the 9.3 major release, see
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<xref linkend="release-9-3">.
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</para>
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||||
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<sect2>
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<title>Migration to Version 9.3.23</title>
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||||
|
||||
<para>
|
||||
A dump/restore is not required for those running 9.3.X.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
However, if the function marking mistakes mentioned in the first
|
||||
changelog entry below affect you, you will want to take steps to
|
||||
correct your database catalogs.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Also, if you are upgrading from a version earlier than 9.3.22,
|
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see <xref linkend="release-9-3-22">.
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||||
</para>
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||||
</sect2>
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||||
|
||||
<sect2>
|
||||
<title>Changes</title>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect volatility markings on a few built-in functions
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(Thomas Munro, Tom Lane)
|
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</para>
|
||||
|
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<para>
|
||||
The functions
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<function>query_to_xml</function>,
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<function>cursor_to_xml</function>,
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<function>cursor_to_xmlschema</function>,
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<function>query_to_xmlschema</function>, and
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<function>query_to_xml_and_xmlschema</function>
|
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should be marked volatile because they execute user-supplied queries
|
||||
that might contain volatile operations. They were not, leading to a
|
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risk of incorrect query optimization. This has been repaired for new
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installations by correcting the initial catalog data, but existing
|
||||
installations will continue to contain the incorrect markings.
|
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Practical use of these functions seems to pose little hazard, but in
|
||||
case of trouble, it can be fixed by manually updating these
|
||||
functions' <structname>pg_proc</structname> entries. (Note that that
|
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will need to be done in each database of the installation.) Another
|
||||
option is to <application>pg_upgrade</application> the database to a
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||||
version containing the corrected initial data.
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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 re-using TOAST value OIDs that match dead-but-not-yet-vacuumed
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TOAST entries (Pavan Deolasee)
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</para>
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|
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<para>
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Once the OID counter has wrapped around, it's possible to assign a
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TOAST value whose OID matches a previously deleted entry in the same
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TOAST table. If that entry were not yet vacuumed away, this resulted
|
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in <quote>unexpected chunk number 0 (expected 1) for toast
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value <replaceable>nnnnn</replaceable></quote> errors, which would
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persist until the dead entry was removed
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by <command>VACUUM</command>. Fix by not selecting such OIDs when
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creating a new TOAST entry.
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</para>
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</listitem>
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<listitem>
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<para>
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Change <command>ANALYZE</command>'s algorithm for updating
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<structname>pg_class</structname>.<structfield>reltuples</structfield>
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(David Gould)
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</para>
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<para>
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Previously, pages not actually scanned by <command>ANALYZE</command>
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were assumed to retain their old tuple density. In a large table
|
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where <command>ANALYZE</command> samples only a small fraction of the
|
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pages, this meant that the overall tuple density estimate could not
|
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change very much, so that <structfield>reltuples</structfield> would
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change nearly proportionally to changes in the table's physical size
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(<structfield>relpages</structfield>) regardless of what was actually
|
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happening in the table. This has been observed to result
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in <structfield>reltuples</structfield> becoming so much larger than
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reality as to effectively shut off autovacuuming. To fix, assume
|
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that <command>ANALYZE</command>'s sample is a statistically unbiased
|
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sample of the table (as it should be), and just extrapolate the
|
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density observed within those pages to the whole table.
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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 <literal>UPDATE/DELETE ... WHERE CURRENT OF</literal> to not fail
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when the referenced cursor uses an index-only-scan plan (Yugo Nagata,
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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 incorrect planning of join clauses pushed into parameterized
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paths (Andrew Gierth, Tom Lane)
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</para>
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<para>
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This error could result in misclassifying a condition as
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a <quote>join filter</quote> for an outer join when it should be a
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plain <quote>filter</quote> condition, leading to incorrect join
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output.
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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 misoptimization of <literal>CHECK</literal> constraints having
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provably-NULL subclauses of
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top-level <literal>AND</literal>/<literal>OR</literal> conditions
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(Tom Lane, Dean Rasheed)
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</para>
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<para>
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This could, for example, allow constraint exclusion to exclude a
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child table that should not be excluded from a query.
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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 failure if a query-cancel or session-termination interrupt
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occurs while committing a prepared transaction (Stas Kelvich)
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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 query-lifespan memory leakage in repeatedly executed hash joins
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(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 overly strict sanity check
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in <function>heap_prepare_freeze_tuple</function>
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(Álvaro Herrera)
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</para>
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<para>
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This could result in incorrect <quote>cannot freeze committed
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xmax</quote> failures in databases that have
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been <application>pg_upgrade</application>'d from 9.2 or earlier.
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</para>
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</listitem>
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<listitem>
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<para>
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Prevent dangling-pointer dereference when a C-coded before-update row
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trigger returns the <quote>old</quote> tuple (Rushabh Lathia)
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</para>
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</listitem>
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<listitem>
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<para>
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Reduce locking during autovacuum worker scheduling (Jeff Janes)
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</para>
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<para>
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The previous behavior caused drastic loss of potential worker
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concurrency in databases with many tables.
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</para>
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</listitem>
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<listitem>
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<para>
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Ensure client hostname is copied while copying
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<structname>pg_stat_activity</structname> data to local memory
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(Edmund Horner)
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</para>
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<para>
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Previously the supposedly-local snapshot contained a pointer into
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shared memory, allowing the client hostname column to change
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unexpectedly if any existing session disconnected.
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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 incorrect processing of multiple compound affixes
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in <literal>ispell</literal> dictionaries (Arthur Zakirov)
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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 collation-aware searches (that is, indexscans using inequality
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operators) in SP-GiST indexes on text columns (Tom Lane)
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</para>
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<para>
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Such searches would return the wrong set of rows in most non-C
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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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Count the number of index tuples correctly during initial build of an
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SP-GiST index (Tomas Vondra)
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</para>
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<para>
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Previously, the tuple count was reported to be the same as that of
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the underlying table, which is wrong if the index is partial.
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</para>
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</listitem>
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<listitem>
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<para>
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Count the number of index tuples correctly during vacuuming of a
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GiST index (Andrey Borodin)
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</para>
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<para>
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Previously it reported the estimated number of heap tuples,
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which might be inaccurate, and is certainly wrong if the
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index is partial.
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</para>
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</listitem>
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<listitem>
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<para>
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Allow <function>scalarltsel</function>
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and <function>scalargtsel</function> to be used on non-core datatypes
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(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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Reduce <application>libpq</application>'s memory consumption when a
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server error is reported after a large amount of query output has
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been collected (Tom Lane)
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</para>
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<para>
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Discard the previous output before, not after, processing the error
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message. On some platforms, notably Linux, this can make a
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difference in the application's subsequent memory footprint.
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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 double-free crashes in <application>ecpg</application>
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(Patrick Krecker, Jeevan Ladhe)
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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 <application>ecpg</application> to handle <type>long long
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int</type> variables correctly in MSVC builds (Michael Meskes,
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Andrew Gierth)
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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 mis-quoting of values for list-valued GUC variables in dumps
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(Michael Paquier, Tom Lane)
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</para>
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<para>
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The <varname>local_preload_libraries</varname>,
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<varname>session_preload_libraries</varname>,
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<varname>shared_preload_libraries</varname>,
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and <varname>temp_tablespaces</varname> variables were not correctly
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||||
quoted in <application>pg_dump</application> output. This would
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||||
cause problems if settings for these variables appeared in
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||||
<command>CREATE FUNCTION ... SET</command> or <command>ALTER
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DATABASE/ROLE ... SET</command> clauses.
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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 overflow handling in <application>PL/pgSQL</application>
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integer <command>FOR</command> loops (Tom Lane)
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</para>
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<para>
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The previous coding failed to detect overflow of the loop variable
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on some non-gcc compilers, leading to an infinite loop.
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</para>
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</listitem>
|
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|
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<listitem>
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<para>
|
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Adjust <application>PL/Python</application> regression tests to pass
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under Python 3.7 (Peter Eisentraut)
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</para>
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</listitem>
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<listitem>
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<para>
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Support testing <application>PL/Python</application> and related
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modules when building with Python 3 and MSVC (Andrew Dunstan)
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</para>
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</listitem>
|
||||
|
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<listitem>
|
||||
<para>
|
||||
Rename internal <function>b64_encode</function>
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and <function>b64_decode</function> functions to avoid conflict with
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Solaris 11.4 built-in functions (Rainer Orth)
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</para>
|
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</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Sync our copy of the timezone library with IANA tzcode release 2018e
|
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(Tom Lane)
|
||||
</para>
|
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<para>
|
||||
This fixes the <application>zic</application> timezone data compiler
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to cope with negative daylight-savings offsets. While
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the <productname>PostgreSQL</productname> project will not
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immediately ship such timezone data, <application>zic</application>
|
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might be used with timezone data obtained directly from IANA, so it
|
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seems prudent to update <application>zic</application> now.
|
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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 2018d for DST law changes in Palestine and Antarctica (Casey
|
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Station), plus historical corrections for Portugal and its colonies,
|
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as well as Enderbury, Jamaica, Turks & Caicos Islands, and
|
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Uruguay.
|
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</para>
|
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</listitem>
|
||||
|
||||
</itemizedlist>
|
||||
|
||||
</sect2>
|
||||
</sect1>
|
||||
|
||||
<sect1 id="release-9-3-22">
|
||||
<title>Release 9.3.22</title>
|
||||
|
||||
|
||||
@ -1,6 +1,417 @@
|
||||
<!-- doc/src/sgml/release-9.4.sgml -->
|
||||
<!-- See header comment in release.sgml about typical markup -->
|
||||
|
||||
<sect1 id="release-9-4-18">
|
||||
<title>Release 9.4.18</title>
|
||||
|
||||
<formalpara>
|
||||
<title>Release date:</title>
|
||||
<para>2018-05-10</para>
|
||||
</formalpara>
|
||||
|
||||
<para>
|
||||
This release contains a variety of fixes from 9.4.17.
|
||||
For information about new features in the 9.4 major release, see
|
||||
<xref linkend="release-9-4">.
|
||||
</para>
|
||||
|
||||
<sect2>
|
||||
<title>Migration to Version 9.4.18</title>
|
||||
|
||||
<para>
|
||||
A dump/restore is not required for those running 9.4.X.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
However, if the function marking mistakes mentioned in the first
|
||||
changelog entry below affect you, you will want to take steps to
|
||||
correct your database catalogs.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Also, if you are upgrading from a version earlier than 9.4.17,
|
||||
see <xref linkend="release-9-4-17">.
|
||||
</para>
|
||||
</sect2>
|
||||
|
||||
<sect2>
|
||||
<title>Changes</title>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect volatility markings on a few built-in functions
|
||||
(Thomas Munro, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The functions
|
||||
<function>query_to_xml</function>,
|
||||
<function>cursor_to_xml</function>,
|
||||
<function>cursor_to_xmlschema</function>,
|
||||
<function>query_to_xmlschema</function>, and
|
||||
<function>query_to_xml_and_xmlschema</function>
|
||||
should be marked volatile because they execute user-supplied queries
|
||||
that might contain volatile operations. They were not, leading to a
|
||||
risk of incorrect query optimization. This has been repaired for new
|
||||
installations by correcting the initial catalog data, but existing
|
||||
installations will continue to contain the incorrect markings.
|
||||
Practical use of these functions seems to pose little hazard, but in
|
||||
case of trouble, it can be fixed by manually updating these
|
||||
functions' <structname>pg_proc</structname> entries. (Note that that
|
||||
will need to be done in each database of the installation.) Another
|
||||
option is to <application>pg_upgrade</application> the database to a
|
||||
version containing the corrected initial data.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid re-using TOAST value OIDs that match dead-but-not-yet-vacuumed
|
||||
TOAST entries (Pavan Deolasee)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Once the OID counter has wrapped around, it's possible to assign a
|
||||
TOAST value whose OID matches a previously deleted entry in the same
|
||||
TOAST table. If that entry were not yet vacuumed away, this resulted
|
||||
in <quote>unexpected chunk number 0 (expected 1) for toast
|
||||
value <replaceable>nnnnn</replaceable></quote> errors, which would
|
||||
persist until the dead entry was removed
|
||||
by <command>VACUUM</command>. Fix by not selecting such OIDs when
|
||||
creating a new TOAST entry.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Change <command>ANALYZE</command>'s algorithm for updating
|
||||
<structname>pg_class</structname>.<structfield>reltuples</structfield>
|
||||
(David Gould)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously, pages not actually scanned by <command>ANALYZE</command>
|
||||
were assumed to retain their old tuple density. In a large table
|
||||
where <command>ANALYZE</command> samples only a small fraction of the
|
||||
pages, this meant that the overall tuple density estimate could not
|
||||
change very much, so that <structfield>reltuples</structfield> would
|
||||
change nearly proportionally to changes in the table's physical size
|
||||
(<structfield>relpages</structfield>) regardless of what was actually
|
||||
happening in the table. This has been observed to result
|
||||
in <structfield>reltuples</structfield> becoming so much larger than
|
||||
reality as to effectively shut off autovacuuming. To fix, assume
|
||||
that <command>ANALYZE</command>'s sample is a statistically unbiased
|
||||
sample of the table (as it should be), and just extrapolate the
|
||||
density observed within those pages to the whole table.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid deadlocks in concurrent <command>CREATE INDEX
|
||||
CONCURRENTLY</command> commands that are run
|
||||
under <literal>SERIALIZABLE</literal> or <literal>REPEATABLE
|
||||
READ</literal> transaction isolation (Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix possible slow execution of <command>REFRESH MATERIALIZED VIEW
|
||||
CONCURRENTLY</command> (Thomas Munro)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <literal>UPDATE/DELETE ... WHERE CURRENT OF</literal> to not fail
|
||||
when the referenced cursor uses an index-only-scan plan (Yugo Nagata,
|
||||
Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect planning of join clauses pushed into parameterized
|
||||
paths (Andrew Gierth, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This error could result in misclassifying a condition as
|
||||
a <quote>join filter</quote> for an outer join when it should be a
|
||||
plain <quote>filter</quote> condition, leading to incorrect join
|
||||
output.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix misoptimization of <literal>CHECK</literal> constraints having
|
||||
provably-NULL subclauses of
|
||||
top-level <literal>AND</literal>/<literal>OR</literal> conditions
|
||||
(Tom Lane, Dean Rasheed)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could, for example, allow constraint exclusion to exclude a
|
||||
child table that should not be excluded from a query.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid failure if a query-cancel or session-termination interrupt
|
||||
occurs while committing a prepared transaction (Stas Kelvich)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix query-lifespan memory leakage in repeatedly executed hash joins
|
||||
(Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix overly strict sanity check
|
||||
in <function>heap_prepare_freeze_tuple</function>
|
||||
(Álvaro Herrera)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could result in incorrect <quote>cannot freeze committed
|
||||
xmax</quote> failures in databases that have
|
||||
been <application>pg_upgrade</application>'d from 9.2 or earlier.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Prevent dangling-pointer dereference when a C-coded before-update row
|
||||
trigger returns the <quote>old</quote> tuple (Rushabh Lathia)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Reduce locking during autovacuum worker scheduling (Jeff Janes)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The previous behavior caused drastic loss of potential worker
|
||||
concurrency in databases with many tables.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Ensure client hostname is copied while copying
|
||||
<structname>pg_stat_activity</structname> data to local memory
|
||||
(Edmund Horner)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously the supposedly-local snapshot contained a pointer into
|
||||
shared memory, allowing the client hostname column to change
|
||||
unexpectedly if any existing session disconnected.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect processing of multiple compound affixes
|
||||
in <literal>ispell</literal> dictionaries (Arthur Zakirov)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix collation-aware searches (that is, indexscans using inequality
|
||||
operators) in SP-GiST indexes on text columns (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Such searches would return the wrong set of rows in most non-C
|
||||
locales.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Count the number of index tuples correctly during initial build of an
|
||||
SP-GiST index (Tomas Vondra)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously, the tuple count was reported to be the same as that of
|
||||
the underlying table, which is wrong if the index is partial.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Count the number of index tuples correctly during vacuuming of a
|
||||
GiST index (Andrey Borodin)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously it reported the estimated number of heap tuples,
|
||||
which might be inaccurate, and is certainly wrong if the
|
||||
index is partial.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix a corner case where a streaming standby gets stuck at a WAL
|
||||
continuation record (Kyotaro Horiguchi)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
In logical decoding, avoid possible double processing of WAL data
|
||||
when a walsender restarts (Craig Ringer)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Allow <function>scalarltsel</function>
|
||||
and <function>scalargtsel</function> to be used on non-core datatypes
|
||||
(Tomas Vondra)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Reduce <application>libpq</application>'s memory consumption when a
|
||||
server error is reported after a large amount of query output has
|
||||
been collected (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Discard the previous output before, not after, processing the error
|
||||
message. On some platforms, notably Linux, this can make a
|
||||
difference in the application's subsequent memory footprint.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix double-free crashes in <application>ecpg</application>
|
||||
(Patrick Krecker, Jeevan Ladhe)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>ecpg</application> to handle <type>long long
|
||||
int</type> variables correctly in MSVC builds (Michael Meskes,
|
||||
Andrew Gierth)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix mis-quoting of values for list-valued GUC variables in dumps
|
||||
(Michael Paquier, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The <varname>local_preload_libraries</varname>,
|
||||
<varname>session_preload_libraries</varname>,
|
||||
<varname>shared_preload_libraries</varname>,
|
||||
and <varname>temp_tablespaces</varname> variables were not correctly
|
||||
quoted in <application>pg_dump</application> output. This would
|
||||
cause problems if settings for these variables appeared in
|
||||
<command>CREATE FUNCTION ... SET</command> or <command>ALTER
|
||||
DATABASE/ROLE ... SET</command> clauses.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>pg_recvlogical</application> to not fail against
|
||||
pre-v10 <productname>PostgreSQL</productname> servers
|
||||
(Michael Paquier)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
A previous fix caused <application>pg_recvlogical</application> to
|
||||
issue a command regardless of server version, but it should only be
|
||||
issued to v10 and later servers.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix overflow handling in <application>PL/pgSQL</application>
|
||||
integer <command>FOR</command> loops (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The previous coding failed to detect overflow of the loop variable
|
||||
on some non-gcc compilers, leading to an infinite loop.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Adjust <application>PL/Python</application> regression tests to pass
|
||||
under Python 3.7 (Peter Eisentraut)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Support testing <application>PL/Python</application> and related
|
||||
modules when building with Python 3 and MSVC (Andrew Dunstan)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Rename internal <function>b64_encode</function>
|
||||
and <function>b64_decode</function> functions to avoid conflict with
|
||||
Solaris 11.4 built-in functions (Rainer Orth)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Sync our copy of the timezone library with IANA tzcode release 2018e
|
||||
(Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This fixes the <application>zic</application> timezone data compiler
|
||||
to cope with negative daylight-savings offsets. While
|
||||
the <productname>PostgreSQL</productname> project will not
|
||||
immediately ship such timezone data, <application>zic</application>
|
||||
might be used with timezone data obtained directly from IANA, so it
|
||||
seems prudent to update <application>zic</application> now.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Update time zone data files to <application>tzdata</application>
|
||||
release 2018d for DST law changes in Palestine and Antarctica (Casey
|
||||
Station), plus historical corrections for Portugal and its colonies,
|
||||
as well as Enderbury, Jamaica, Turks & Caicos Islands, and
|
||||
Uruguay.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
</itemizedlist>
|
||||
|
||||
</sect2>
|
||||
</sect1>
|
||||
|
||||
<sect1 id="release-9-4-17">
|
||||
<title>Release 9.4.17</title>
|
||||
|
||||
|
||||
@ -1,6 +1,476 @@
|
||||
<!-- doc/src/sgml/release-9.5.sgml -->
|
||||
<!-- See header comment in release.sgml about typical markup -->
|
||||
|
||||
<sect1 id="release-9-5-13">
|
||||
<title>Release 9.5.13</title>
|
||||
|
||||
<formalpara>
|
||||
<title>Release date:</title>
|
||||
<para>2018-05-10</para>
|
||||
</formalpara>
|
||||
|
||||
<para>
|
||||
This release contains a variety of fixes from 9.5.12.
|
||||
For information about new features in the 9.5 major release, see
|
||||
<xref linkend="release-9-5">.
|
||||
</para>
|
||||
|
||||
<sect2>
|
||||
<title>Migration to Version 9.5.13</title>
|
||||
|
||||
<para>
|
||||
A dump/restore is not required for those running 9.5.X.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
However, if the function marking mistakes mentioned in the first
|
||||
changelog entry below affect you, you will want to take steps to
|
||||
correct your database catalogs.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Also, if you are upgrading from a version earlier than 9.5.12,
|
||||
see <xref linkend="release-9-5-12">.
|
||||
</para>
|
||||
</sect2>
|
||||
|
||||
<sect2>
|
||||
<title>Changes</title>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect volatility markings on a few built-in functions
|
||||
(Thomas Munro, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The functions
|
||||
<function>query_to_xml</function>,
|
||||
<function>cursor_to_xml</function>,
|
||||
<function>cursor_to_xmlschema</function>,
|
||||
<function>query_to_xmlschema</function>, and
|
||||
<function>query_to_xml_and_xmlschema</function>
|
||||
should be marked volatile because they execute user-supplied queries
|
||||
that might contain volatile operations. They were not, leading to a
|
||||
risk of incorrect query optimization. This has been repaired for new
|
||||
installations by correcting the initial catalog data, but existing
|
||||
installations will continue to contain the incorrect markings.
|
||||
Practical use of these functions seems to pose little hazard, but in
|
||||
case of trouble, it can be fixed by manually updating these
|
||||
functions' <structname>pg_proc</structname> entries. (Note that that
|
||||
will need to be done in each database of the installation.) Another
|
||||
option is to <application>pg_upgrade</application> the database to a
|
||||
version containing the corrected initial data.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid re-using TOAST value OIDs that match dead-but-not-yet-vacuumed
|
||||
TOAST entries (Pavan Deolasee)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Once the OID counter has wrapped around, it's possible to assign a
|
||||
TOAST value whose OID matches a previously deleted entry in the same
|
||||
TOAST table. If that entry were not yet vacuumed away, this resulted
|
||||
in <quote>unexpected chunk number 0 (expected 1) for toast
|
||||
value <replaceable>nnnnn</replaceable></quote> errors, which would
|
||||
persist until the dead entry was removed
|
||||
by <command>VACUUM</command>. Fix by not selecting such OIDs when
|
||||
creating a new TOAST entry.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Change <command>ANALYZE</command>'s algorithm for updating
|
||||
<structname>pg_class</structname>.<structfield>reltuples</structfield>
|
||||
(David Gould)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously, pages not actually scanned by <command>ANALYZE</command>
|
||||
were assumed to retain their old tuple density. In a large table
|
||||
where <command>ANALYZE</command> samples only a small fraction of the
|
||||
pages, this meant that the overall tuple density estimate could not
|
||||
change very much, so that <structfield>reltuples</structfield> would
|
||||
change nearly proportionally to changes in the table's physical size
|
||||
(<structfield>relpages</structfield>) regardless of what was actually
|
||||
happening in the table. This has been observed to result
|
||||
in <structfield>reltuples</structfield> becoming so much larger than
|
||||
reality as to effectively shut off autovacuuming. To fix, assume
|
||||
that <command>ANALYZE</command>'s sample is a statistically unbiased
|
||||
sample of the table (as it should be), and just extrapolate the
|
||||
density observed within those pages to the whole table.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid deadlocks in concurrent <command>CREATE INDEX
|
||||
CONCURRENTLY</command> commands that are run
|
||||
under <literal>SERIALIZABLE</literal> or <literal>REPEATABLE
|
||||
READ</literal> transaction isolation (Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix possible slow execution of <command>REFRESH MATERIALIZED VIEW
|
||||
CONCURRENTLY</command> (Thomas Munro)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <literal>UPDATE/DELETE ... WHERE CURRENT OF</literal> to not fail
|
||||
when the referenced cursor uses an index-only-scan plan (Yugo Nagata,
|
||||
Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect planning of join clauses pushed into parameterized
|
||||
paths (Andrew Gierth, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This error could result in misclassifying a condition as
|
||||
a <quote>join filter</quote> for an outer join when it should be a
|
||||
plain <quote>filter</quote> condition, leading to incorrect join
|
||||
output.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix possibly incorrect generation of an index-only-scan plan when the
|
||||
same table column appears in multiple index columns, and only some of
|
||||
those index columns use operator classes that can return the column
|
||||
value (Kyotaro Horiguchi)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix misoptimization of <literal>CHECK</literal> constraints having
|
||||
provably-NULL subclauses of
|
||||
top-level <literal>AND</literal>/<literal>OR</literal> conditions
|
||||
(Tom Lane, Dean Rasheed)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could, for example, allow constraint exclusion to exclude a
|
||||
child table that should not be excluded from a query.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix executor crash due to double free in some <literal>GROUPING
|
||||
SET</literal> usages (Peter Geoghegan)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid crash if a table rewrite event trigger is added concurrently
|
||||
with a command that could call such a trigger (Álvaro Herrera,
|
||||
Andrew Gierth, Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid failure if a query-cancel or session-termination interrupt
|
||||
occurs while committing a prepared transaction (Stas Kelvich)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix query-lifespan memory leakage in repeatedly executed hash joins
|
||||
(Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix overly strict sanity check
|
||||
in <function>heap_prepare_freeze_tuple</function>
|
||||
(Álvaro Herrera)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could result in incorrect <quote>cannot freeze committed
|
||||
xmax</quote> failures in databases that have
|
||||
been <application>pg_upgrade</application>'d from 9.2 or earlier.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Prevent dangling-pointer dereference when a C-coded before-update row
|
||||
trigger returns the <quote>old</quote> tuple (Rushabh Lathia)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Reduce locking during autovacuum worker scheduling (Jeff Janes)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The previous behavior caused drastic loss of potential worker
|
||||
concurrency in databases with many tables.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Ensure client hostname is copied while copying
|
||||
<structname>pg_stat_activity</structname> data to local memory
|
||||
(Edmund Horner)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously the supposedly-local snapshot contained a pointer into
|
||||
shared memory, allowing the client hostname column to change
|
||||
unexpectedly if any existing session disconnected.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect processing of multiple compound affixes
|
||||
in <literal>ispell</literal> dictionaries (Arthur Zakirov)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix collation-aware searches (that is, indexscans using inequality
|
||||
operators) in SP-GiST indexes on text columns (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Such searches would return the wrong set of rows in most non-C
|
||||
locales.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Count the number of index tuples correctly during initial build of an
|
||||
SP-GiST index (Tomas Vondra)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously, the tuple count was reported to be the same as that of
|
||||
the underlying table, which is wrong if the index is partial.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Count the number of index tuples correctly during vacuuming of a
|
||||
GiST index (Andrey Borodin)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously it reported the estimated number of heap tuples,
|
||||
which might be inaccurate, and is certainly wrong if the
|
||||
index is partial.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix a corner case where a streaming standby gets stuck at a WAL
|
||||
continuation record (Kyotaro Horiguchi)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
In logical decoding, avoid possible double processing of WAL data
|
||||
when a walsender restarts (Craig Ringer)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Allow <function>scalarltsel</function>
|
||||
and <function>scalargtsel</function> to be used on non-core datatypes
|
||||
(Tomas Vondra)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Reduce <application>libpq</application>'s memory consumption when a
|
||||
server error is reported after a large amount of query output has
|
||||
been collected (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Discard the previous output before, not after, processing the error
|
||||
message. On some platforms, notably Linux, this can make a
|
||||
difference in the application's subsequent memory footprint.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix double-free crashes in <application>ecpg</application>
|
||||
(Patrick Krecker, Jeevan Ladhe)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>ecpg</application> to handle <type>long long
|
||||
int</type> variables correctly in MSVC builds (Michael Meskes,
|
||||
Andrew Gierth)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix mis-quoting of values for list-valued GUC variables in dumps
|
||||
(Michael Paquier, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The <varname>local_preload_libraries</varname>,
|
||||
<varname>session_preload_libraries</varname>,
|
||||
<varname>shared_preload_libraries</varname>,
|
||||
and <varname>temp_tablespaces</varname> variables were not correctly
|
||||
quoted in <application>pg_dump</application> output. This would
|
||||
cause problems if settings for these variables appeared in
|
||||
<command>CREATE FUNCTION ... SET</command> or <command>ALTER
|
||||
DATABASE/ROLE ... SET</command> clauses.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>pg_recvlogical</application> to not fail against
|
||||
pre-v10 <productname>PostgreSQL</productname> servers
|
||||
(Michael Paquier)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
A previous fix caused <application>pg_recvlogical</application> to
|
||||
issue a command regardless of server version, but it should only be
|
||||
issued to v10 and later servers.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Ensure that <application>pg_rewind</application> deletes files on the
|
||||
target server if they are deleted from the source server during the
|
||||
run (Takayuki Tsunakawa)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Failure to do this could result in data inconsistency on the target,
|
||||
particularly if the file in question is a WAL segment.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>pg_rewind</application> to handle tables in
|
||||
non-default tablespaces correctly (Takayuki Tsunakawa)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix overflow handling in <application>PL/pgSQL</application>
|
||||
integer <command>FOR</command> loops (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The previous coding failed to detect overflow of the loop variable
|
||||
on some non-gcc compilers, leading to an infinite loop.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Adjust <application>PL/Python</application> regression tests to pass
|
||||
under Python 3.7 (Peter Eisentraut)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Support testing <application>PL/Python</application> and related
|
||||
modules when building with Python 3 and MSVC (Andrew Dunstan)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<!--
|
||||
Author: Tom Lane <tgl@sss.pgh.pa.us>
|
||||
Branch: REL9_5_STABLE [3c0e07a46] 2018-05-01 12:02:41 -0400
|
||||
-->
|
||||
<para>
|
||||
Support building with Microsoft Visual Studio 2015 (Michael Paquier)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Various fixes needed for VS2015 compatibility were previously
|
||||
back-patched into the 9.5 branch, but this one was missed.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Rename internal <function>b64_encode</function>
|
||||
and <function>b64_decode</function> functions to avoid conflict with
|
||||
Solaris 11.4 built-in functions (Rainer Orth)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Sync our copy of the timezone library with IANA tzcode release 2018e
|
||||
(Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This fixes the <application>zic</application> timezone data compiler
|
||||
to cope with negative daylight-savings offsets. While
|
||||
the <productname>PostgreSQL</productname> project will not
|
||||
immediately ship such timezone data, <application>zic</application>
|
||||
might be used with timezone data obtained directly from IANA, so it
|
||||
seems prudent to update <application>zic</application> now.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Update time zone data files to <application>tzdata</application>
|
||||
release 2018d for DST law changes in Palestine and Antarctica (Casey
|
||||
Station), plus historical corrections for Portugal and its colonies,
|
||||
as well as Enderbury, Jamaica, Turks & Caicos Islands, and
|
||||
Uruguay.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
</itemizedlist>
|
||||
|
||||
</sect2>
|
||||
</sect1>
|
||||
|
||||
<sect1 id="release-9-5-12">
|
||||
<title>Release 9.5.12</title>
|
||||
|
||||
|
||||
@ -1,6 +1,538 @@
|
||||
<!-- doc/src/sgml/release-9.6.sgml -->
|
||||
<!-- See header comment in release.sgml about typical markup -->
|
||||
|
||||
<sect1 id="release-9-6-9">
|
||||
<title>Release 9.6.9</title>
|
||||
|
||||
<formalpara>
|
||||
<title>Release date:</title>
|
||||
<para>2018-05-10</para>
|
||||
</formalpara>
|
||||
|
||||
<para>
|
||||
This release contains a variety of fixes from 9.6.8.
|
||||
For information about new features in the 9.6 major release, see
|
||||
<xref linkend="release-9-6">.
|
||||
</para>
|
||||
|
||||
<sect2>
|
||||
<title>Migration to Version 9.6.9</title>
|
||||
|
||||
<para>
|
||||
A dump/restore is not required for those running 9.6.X.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
However, if the function marking mistakes mentioned in the first two
|
||||
changelog entries below affect you, you will want to take steps to
|
||||
correct your database catalogs.
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Also, if you are upgrading from a version earlier than 9.6.8,
|
||||
see <xref linkend="release-9-6-8">.
|
||||
</para>
|
||||
</sect2>
|
||||
|
||||
<sect2>
|
||||
<title>Changes</title>
|
||||
|
||||
<itemizedlist>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect volatility markings on a few built-in functions
|
||||
(Thomas Munro, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The functions
|
||||
<function>query_to_xml</function>,
|
||||
<function>cursor_to_xml</function>,
|
||||
<function>cursor_to_xmlschema</function>,
|
||||
<function>query_to_xmlschema</function>, and
|
||||
<function>query_to_xml_and_xmlschema</function>
|
||||
should be marked volatile because they execute user-supplied queries
|
||||
that might contain volatile operations. They were not, leading to a
|
||||
risk of incorrect query optimization. This has been repaired for new
|
||||
installations by correcting the initial catalog data, but existing
|
||||
installations will continue to contain the incorrect markings.
|
||||
Practical use of these functions seems to pose little hazard, but in
|
||||
case of trouble, it can be fixed by manually updating these
|
||||
functions' <structname>pg_proc</structname> entries. (Note that that
|
||||
will need to be done in each database of the installation.) Another
|
||||
option is to <application>pg_upgrade</application> the database to a
|
||||
version containing the corrected initial data.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect parallel-safety markings on a few built-in functions
|
||||
(Thomas Munro, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The functions
|
||||
<function>brin_summarize_new_values</function>,
|
||||
<function>brin_summarize_range</function>,
|
||||
<function>brin_desummarize_range</function>,
|
||||
<function>gin_clean_pending_list</function>,
|
||||
<function>cursor_to_xml</function>,
|
||||
<function>cursor_to_xmlschema</function>,
|
||||
<function>ts_rewrite</function>,
|
||||
<function>ts_stat</function>,
|
||||
<function>binary_upgrade_create_empty_extension</function>, and
|
||||
<function>pg_import_system_collations</function>
|
||||
should be marked parallel-unsafe; some because they perform database
|
||||
modifications directly, and others because they execute user-supplied
|
||||
queries that might do so. They were marked parallel-restricted
|
||||
instead, leading to a risk of unexpected query errors. This has been
|
||||
repaired for new installations by correcting the initial catalog
|
||||
data, but existing installations will continue to contain the
|
||||
incorrect markings. Practical use of these functions seems to pose
|
||||
little hazard unless <varname>force_parallel_mode</varname> is turned
|
||||
on. In case of trouble, it can be fixed by manually updating these
|
||||
functions' <structname>pg_proc</structname> entries. (Note that that
|
||||
will need to be done in each database of the installation.) Another
|
||||
option is to <application>pg_upgrade</application> the database to a
|
||||
version containing the corrected initial data.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid re-using TOAST value OIDs that match dead-but-not-yet-vacuumed
|
||||
TOAST entries (Pavan Deolasee)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Once the OID counter has wrapped around, it's possible to assign a
|
||||
TOAST value whose OID matches a previously deleted entry in the same
|
||||
TOAST table. If that entry were not yet vacuumed away, this resulted
|
||||
in <quote>unexpected chunk number 0 (expected 1) for toast
|
||||
value <replaceable>nnnnn</replaceable></quote> errors, which would
|
||||
persist until the dead entry was removed
|
||||
by <command>VACUUM</command>. Fix by not selecting such OIDs when
|
||||
creating a new TOAST entry.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Change <command>ANALYZE</command>'s algorithm for updating
|
||||
<structname>pg_class</structname>.<structfield>reltuples</structfield>
|
||||
(David Gould)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously, pages not actually scanned by <command>ANALYZE</command>
|
||||
were assumed to retain their old tuple density. In a large table
|
||||
where <command>ANALYZE</command> samples only a small fraction of the
|
||||
pages, this meant that the overall tuple density estimate could not
|
||||
change very much, so that <structfield>reltuples</structfield> would
|
||||
change nearly proportionally to changes in the table's physical size
|
||||
(<structfield>relpages</structfield>) regardless of what was actually
|
||||
happening in the table. This has been observed to result
|
||||
in <structfield>reltuples</structfield> becoming so much larger than
|
||||
reality as to effectively shut off autovacuuming. To fix, assume
|
||||
that <command>ANALYZE</command>'s sample is a statistically unbiased
|
||||
sample of the table (as it should be), and just extrapolate the
|
||||
density observed within those pages to the whole table.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid deadlocks in concurrent <command>CREATE INDEX
|
||||
CONCURRENTLY</command> commands that are run
|
||||
under <literal>SERIALIZABLE</literal> or <literal>REPEATABLE
|
||||
READ</literal> transaction isolation (Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix possible slow execution of <command>REFRESH MATERIALIZED VIEW
|
||||
CONCURRENTLY</command> (Thomas Munro)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <literal>UPDATE/DELETE ... WHERE CURRENT OF</literal> to not fail
|
||||
when the referenced cursor uses an index-only-scan plan (Yugo Nagata,
|
||||
Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect planning of join clauses pushed into parameterized
|
||||
paths (Andrew Gierth, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This error could result in misclassifying a condition as
|
||||
a <quote>join filter</quote> for an outer join when it should be a
|
||||
plain <quote>filter</quote> condition, leading to incorrect join
|
||||
output.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix possibly incorrect generation of an index-only-scan plan when the
|
||||
same table column appears in multiple index columns, and only some of
|
||||
those index columns use operator classes that can return the column
|
||||
value (Kyotaro Horiguchi)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix misoptimization of <literal>CHECK</literal> constraints having
|
||||
provably-NULL subclauses of
|
||||
top-level <literal>AND</literal>/<literal>OR</literal> conditions
|
||||
(Tom Lane, Dean Rasheed)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could, for example, allow constraint exclusion to exclude a
|
||||
child table that should not be excluded from a query.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix executor crash due to double free in some <literal>GROUPING
|
||||
SET</literal> usages (Peter Geoghegan)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid crash if a table rewrite event trigger is added concurrently
|
||||
with a command that could call such a trigger (Álvaro Herrera,
|
||||
Andrew Gierth, Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid failure if a query-cancel or session-termination interrupt
|
||||
occurs while committing a prepared transaction (Stas Kelvich)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix query-lifespan memory leakage in repeatedly executed hash joins
|
||||
(Tom Lane)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix possible leak or double free of visibility map buffer pins
|
||||
(Amit Kapila)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Avoid spuriously marking pages as all-visible (Dan Wood,
|
||||
Pavan Deolasee, Álvaro Herrera)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could happen if some tuples were locked (but not deleted). While
|
||||
queries would still function correctly, vacuum would normally ignore
|
||||
such pages, with the long-term effect that the tuples were never
|
||||
frozen. In recent releases this would eventually result in errors
|
||||
such as <quote>found multixact <replaceable>nnnnn</replaceable> from
|
||||
before relminmxid <replaceable>nnnnn</replaceable></quote>.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix overly strict sanity check
|
||||
in <function>heap_prepare_freeze_tuple</function>
|
||||
(Álvaro Herrera)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This could result in incorrect <quote>cannot freeze committed
|
||||
xmax</quote> failures in databases that have
|
||||
been <application>pg_upgrade</application>'d from 9.2 or earlier.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Prevent dangling-pointer dereference when a C-coded before-update row
|
||||
trigger returns the <quote>old</quote> tuple (Rushabh Lathia)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Reduce locking during autovacuum worker scheduling (Jeff Janes)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The previous behavior caused drastic loss of potential worker
|
||||
concurrency in databases with many tables.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Ensure client hostname is copied while copying
|
||||
<structname>pg_stat_activity</structname> data to local memory
|
||||
(Edmund Horner)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously the supposedly-local snapshot contained a pointer into
|
||||
shared memory, allowing the client hostname column to change
|
||||
unexpectedly if any existing session disconnected.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix incorrect processing of multiple compound affixes
|
||||
in <literal>ispell</literal> dictionaries (Arthur Zakirov)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix collation-aware searches (that is, indexscans using inequality
|
||||
operators) in SP-GiST indexes on text columns (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Such searches would return the wrong set of rows in most non-C
|
||||
locales.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Prevent query-lifespan memory leakage with SP-GiST operator classes
|
||||
that use traversal values (Anton Dignös)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Count the number of index tuples correctly during initial build of an
|
||||
SP-GiST index (Tomas Vondra)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously, the tuple count was reported to be the same as that of
|
||||
the underlying table, which is wrong if the index is partial.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Count the number of index tuples correctly during vacuuming of a
|
||||
GiST index (Andrey Borodin)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Previously it reported the estimated number of heap tuples,
|
||||
which might be inaccurate, and is certainly wrong if the
|
||||
index is partial.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix a corner case where a streaming standby gets stuck at a WAL
|
||||
continuation record (Kyotaro Horiguchi)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
In logical decoding, avoid possible double processing of WAL data
|
||||
when a walsender restarts (Craig Ringer)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Allow <function>scalarltsel</function>
|
||||
and <function>scalargtsel</function> to be used on non-core datatypes
|
||||
(Tomas Vondra)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Reduce <application>libpq</application>'s memory consumption when a
|
||||
server error is reported after a large amount of query output has
|
||||
been collected (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Discard the previous output before, not after, processing the error
|
||||
message. On some platforms, notably Linux, this can make a
|
||||
difference in the application's subsequent memory footprint.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix double-free crashes in <application>ecpg</application>
|
||||
(Patrick Krecker, Jeevan Ladhe)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>ecpg</application> to handle <type>long long
|
||||
int</type> variables correctly in MSVC builds (Michael Meskes,
|
||||
Andrew Gierth)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix mis-quoting of values for list-valued GUC variables in dumps
|
||||
(Michael Paquier, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The <varname>local_preload_libraries</varname>,
|
||||
<varname>session_preload_libraries</varname>,
|
||||
<varname>shared_preload_libraries</varname>,
|
||||
and <varname>temp_tablespaces</varname> variables were not correctly
|
||||
quoted in <application>pg_dump</application> output. This would
|
||||
cause problems if settings for these variables appeared in
|
||||
<command>CREATE FUNCTION ... SET</command> or <command>ALTER
|
||||
DATABASE/ROLE ... SET</command> clauses.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>pg_recvlogical</application> to not fail against
|
||||
pre-v10 <productname>PostgreSQL</productname> servers
|
||||
(Michael Paquier)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
A previous fix caused <application>pg_recvlogical</application> to
|
||||
issue a command regardless of server version, but it should only be
|
||||
issued to v10 and later servers.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Ensure that <application>pg_rewind</application> deletes files on the
|
||||
target server if they are deleted from the source server during the
|
||||
run (Takayuki Tsunakawa)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Failure to do this could result in data inconsistency on the target,
|
||||
particularly if the file in question is a WAL segment.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix <application>pg_rewind</application> to handle tables in
|
||||
non-default tablespaces correctly (Takayuki Tsunakawa)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix overflow handling in <application>PL/pgSQL</application>
|
||||
integer <command>FOR</command> loops (Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
The previous coding failed to detect overflow of the loop variable
|
||||
on some non-gcc compilers, leading to an infinite loop.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Adjust <application>PL/Python</application> regression tests to pass
|
||||
under Python 3.7 (Peter Eisentraut)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Support testing <application>PL/Python</application> and related
|
||||
modules when building with Python 3 and MSVC (Andrew Dunstan)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Fix errors in initial build of <filename>contrib/bloom</filename>
|
||||
indexes (Tomas Vondra, Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
Fix possible omission of the table's last tuple from the index.
|
||||
Count the number of index tuples correctly, in case it is a partial
|
||||
index.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Rename internal <function>b64_encode</function>
|
||||
and <function>b64_decode</function> functions to avoid conflict with
|
||||
Solaris 11.4 built-in functions (Rainer Orth)
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Sync our copy of the timezone library with IANA tzcode release 2018e
|
||||
(Tom Lane)
|
||||
</para>
|
||||
|
||||
<para>
|
||||
This fixes the <application>zic</application> timezone data compiler
|
||||
to cope with negative daylight-savings offsets. While
|
||||
the <productname>PostgreSQL</productname> project will not
|
||||
immediately ship such timezone data, <application>zic</application>
|
||||
might be used with timezone data obtained directly from IANA, so it
|
||||
seems prudent to update <application>zic</application> now.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
<listitem>
|
||||
<para>
|
||||
Update time zone data files to <application>tzdata</application>
|
||||
release 2018d for DST law changes in Palestine and Antarctica (Casey
|
||||
Station), plus historical corrections for Portugal and its colonies,
|
||||
as well as Enderbury, Jamaica, Turks & Caicos Islands, and
|
||||
Uruguay.
|
||||
</para>
|
||||
</listitem>
|
||||
|
||||
</itemizedlist>
|
||||
|
||||
</sect2>
|
||||
</sect1>
|
||||
|
||||
<sect1 id="release-9-6-8">
|
||||
<title>Release 9.6.8</title>
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user