From 0e45e52b5165c403174e942a6c6f96cd99d6192c Mon Sep 17 00:00:00 2001 From: Tom Lane Date: Sun, 16 Jun 2019 15:39:08 -0400 Subject: [PATCH] Release notes for 10.9, 9.6.14, 9.5.18, 9.4.23. (11.4 notes are already done.) --- doc/src/sgml/release-10.sgml | 489 +++++++++++++++++++++++++++++++++++ 1 file changed, 489 insertions(+) diff --git a/doc/src/sgml/release-10.sgml b/doc/src/sgml/release-10.sgml index d4e1e33c7ba..5f5e6f4c4a6 100644 --- a/doc/src/sgml/release-10.sgml +++ b/doc/src/sgml/release-10.sgml @@ -1,6 +1,495 @@ + + Release 10.9 + + + Release date: + 2019-06-20 + + + + This release contains a variety of fixes from 10.8. + For information about new features in major release 10, see + . + + + + Migration to Version 10.9 + + + A dump/restore is not required for those running 10.X. + + + + However, if you are upgrading from a version earlier than 10.6, + see . + + + + + Changes + + + + + + + Fix failure of ALTER TABLE ... ALTER COLUMN TYPE + when the table has a partial exclusion constraint (Tom Lane) + + + + + + + Fix failure of COMMENT command for comments on + domain constraints (Daniel Gustafsson, Michael Paquier) + + + + + + + Prevent possible memory clobber when there are duplicate columns in a + hash aggregate's hash key list (Andrew Gierth) + + + + + + + Avoid spurious deadlock failures when upgrading a tuple lock (Oleksii + Kliukin) + + + + + + + Fix faulty generation of merge-append plans (Tom Lane) + + + + This mistake could lead to could not find pathkey item to + sort errors. + + + + + + + Fix incorrect printing of queries with duplicate join names + (Philip Dubé) + + + + This oversight caused a dump/restore failure for views containing + such queries. + + + + + + + Fix conversion of JSON string literals to JSON-type output columns + in json_to_record() + and json_populate_record() (Tom Lane) + + + + Such cases should produce the literal as a standalone JSON value, but + the code misbehaved if the literal contained any characters requiring + escaping. + + + + + + + Fix misoptimization of {1,1} quantifiers in + regular expressions (Tom Lane) + + + + Such quantifiers were treated as no-ops and optimized away; + but the documentation specifies that they impose greediness, or + non-greediness in the case of the non-greedy + variant {1,1}?, on the subexpression they're + attached to, and this did not happen. The misbehavior occurred + only if the subexpression contained capturing parentheses or a + back-reference. + + + + + + + Avoid possible failures while initializing a new + process's pg_stat_activity data (Tom Lane) + + + + Certain operations that could fail, such as converting strings + extracted from an SSL certificate into the database encoding, were + being performed inside a critical section. Failure there would + result in database-wide lockup due to violating the access protocol + for shared pg_stat_activity data. + + + + + + + Fix race condition in check to see whether a pre-existing shared + memory segment is still in use by a conflicting postmaster (Tom Lane) + + + + + + + Fix unsafe coding in walreceiver's signal handler (Tom Lane) + + + + This avoids rare problems in which the walreceiver process would + crash or deadlock when commanded to shut down. + + + + + + + Avoid attempting to do database accesses for parameter checking in + processes that are not connected to a specific database (Vignesh C, + Andres Freund) + + + + This error could result in failures like cannot read pg_class + without having selected a database. + + + + + + + Avoid possible hang in libpq if using SSL + and OpenSSL's pending-data buffer contains an exact multiple of 256 + bytes (David Binderman) + + + + + + + Improve initdb's handling of multiple + equivalent names for the system time zone (Tom Lane, Andrew Gierth) + + + + Make initdb examine + the /etc/localtime symbolic link, if that + exists, to break ties between equivalent names for the system time + zone. This makes initdb more likely to + select the time zone name that the user would expect when multiple + identical time zones exist. It will not change the behavior + if /etc/localtime is not a symlink to a zone + data file, nor if the time zone is determined from + the TZ environment variable. + + + + Separately, prefer UTC over other spellings of + that time zone, when neither TZ + nor /etc/localtime provide a hint. This fixes + an annoyance introduced by tzdata 2019a's + change to make the UCT and UTC + zone names equivalent: initdb was then + preferring UCT, which almost nobody wants. + + + + + + + Fix ordering of GRANT commands emitted + by pg_dump + and pg_dumpall for databases and + tablespaces (Nathan Bossart, Michael Paquier) + + + + If cascading grants had been issued, restore might fail due to + the GRANT commands being given in an order that + didn't respect their interdependencies. + + + + + + + Make pg_dump recreate table partitions + using CREATE TABLE then ATTACH + PARTITION, rather than including PARTITION + OF in the creation command (Álvaro Herrera, David + Rowley) + + + + This avoids problems with the partition's column order possibly being + changed to match the parent's. Also, a partition is now restorable + from the dump (as a standalone table) even if its parent table isn't + restored; the ATTACH will fail, but that can just + be ignored. + + + + + + + Fix misleading error reports + from reindexdb (Julien Rouhaud) + + + + + + + Ensure that vacuumdb returns correct + status if an error occurs while using parallel jobs + (Julien Rouhaud) + + + + + + + Fix contrib/auto_explain to not cause problems + in parallel queries (Tom Lane) + + + + Previously, a parallel worker might try to log its query even if the + parent query were not being logged + by auto_explain. This would work sometimes, but + it's confusing, and in some cases it resulted in failures + like could not find key N in shm TOC. + + + + Also, fix an off-by-one error that resulted in not necessarily + logging every query even when the sampling rate is set to 1.0. + + + + + + + In contrib/postgres_fdw, account for possible + data modifications by local BEFORE ROW UPDATE + triggers (Shohei Mochizuki) + + + + If a trigger modified a column that was otherwise not changed by the + UPDATE, the new value was not transmitted to the + remote server. + + + + + + + On Windows, avoid failure when the database encoding is set to + SQL_ASCII and we attempt to log a non-ASCII string (Noah Misch) + + + + The code had been assuming that such strings must be in UTF-8, and + would throw an error if they didn't appear to be validly encoded. + Now, just transmit the untranslated bytes to the log. + + + + + + + Make PL/pgSQL's header files C++-safe + (George Tarasov) + + + + + + + + Release 10.8