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2022-05-13Add a new shmem_request_hook hook.Robert Haas
Currently, preloaded libraries are expected to request additional shared memory and LWLocks in _PG_init(). However, it is not unusal for such requests to depend on MaxBackends, which won't be initialized at that time. Such requests could also depend on GUCs that other modules might change. This introduces a new hook where modules can safely use MaxBackends and GUCs to request additional shared memory and LWLocks. Furthermore, this change restricts requests for shared memory and LWLocks to this hook. Previously, libraries could make requests until the size of the main shared memory segment was calculated. Unlike before, we no longer silently ignore requests received at invalid times. Instead, we FATAL if someone tries to request additional shared memory or LWLocks outside of the hook. Nathan Bossart and Julien Rouhaud Discussion: https://postgr.es/m/20220412210112.GA2065815%40nathanxps13 Discussion: https://postgr.es/m/Yn2jE/lmDhKtkUdr@paquier.xyz
2022-05-13Doc: Improve description of the "parallel_commit" option for postgres_fdw.Etsuro Fujita
It wasn't very clear that if this option was enabled, postgres_fdw would commit remote transactions in parallel at main-transaction end, and commit remote subtransactions in parallel at subtransaction end, due to the references to (sub)transaction and other too specific documentation. Clarify that. Also reword to simplify. Follow-up for commit 04e706d42. Jonathan S. Katz, reviewed by Justin Pryzby, with some modifications by me. Discussion: https://postgr.es/m/1435bfd1-172b-de38-f590-4404a5a62eb0%40postgresql.org
2022-05-13Indent C code in flex and bison filesPeter Eisentraut
In the style of pgindent, done semi-manually. Discussion: https://www.postgresql.org/message-id/flat/7d062ecc-7444-23ec-a159-acd8adf9b586%40enterprisedb.com
2022-05-13Don't report stats in LogicalRepApplyLoop() when in xact.Andres Freund
pgstat_report_stat() is only supposed to be called outside of transactions. In 5891c7a8ed8 I added a pgstat_report_stat() call into LogicalRepApplyLoop()'s timeout branch. While not commonly reached inside a transaction, it is reachable (e.g. due to network bottlenecks or the sender being stalled / slow for some reason). To fix, add a !IsTransactionState() check. No test added because there's no easy way to reproduce this case without patching the code. Reported-By: Erik Rijkers <er@xs4all.nl> Discussion: https://postgr.es/m/b3463b8c-2328-dcac-0136-af95715493c1@xs4all.nl
2022-05-13Remove PGDLLIMPORT marker from __pg_log_levelMichael Paquier
Per discussion with Tom Lane and Andres Freund. I have misunderstood the intention behind the choice done in 9a374b7. Discussion: https://postgr.es/m/20220512153737.6kbbcf4qyvwgq4s2@alap3.anarazel.de
2022-05-12Remove function declaration for function in pg_proc.Andres Freund
The declaration is automatically generated. Noticed when experimenting with adding PGDLLIMPORT markers for functions. Discussion: https://postgr.es/m/20220512164513.vaheofqp2q24l65r@alap3.anarazel.de
2022-05-12Add missing binary_upgrade.h includes.Andres Freund
A few places used binary_upgrade_* variables without including the header, which worked without warnings because the variables are defined in those places. However that can cause linker complaints with MSVC - except that we don't see them right now, due to the use of a symbol export file. Discussion: https://postgr.es/m/20220512164513.vaheofqp2q24l65r@alap3.anarazel.de
2022-05-12Add 'static' to file-local variables missing it.Andres Freund
Noticed when comparing the set of exported symbols without / with -fvisibility=hidden after adding PGDLLIMPORT to intentionally exported symbols. Discussion: https://postgr.es/m/20220512164513.vaheofqp2q24l65r@alap3.anarazel.de
2022-05-12Add missing 'extern' to function prototypes.Andres Freund
Postgres style is to spell out extern. Noticed while scripting adding PGDLLIMPORT markers to functions. Discussion: https://postgr.es/m/20220512164513.vaheofqp2q24l65r@alap3.anarazel.de
2022-05-12Do pre-release housekeeping on catalog data.Tom Lane
Run renumber_oids.pl to move high-numbered OIDs down, as per pre-beta tasks specified by RELEASE_CHANGES. For reference, the command was ./renumber_oids.pl --first-mapped-oid 8000 --target-oid 6205
2022-05-12Add 23e7b38bf to git-blame-ignore-revs.Tom Lane
2022-05-12Pre-beta mechanical code beautification.Tom Lane
Run pgindent, pgperltidy, and reformat-dat-files. I manually fixed a couple of comments that pgindent uglified.
2022-05-12libpq: drop pending pipelined commands in pqDropConnection().Tom Lane
The original coding did this in pqDropServerData(), which seems fairly backwards. Pending commands are more like already-queued output data, which is dropped in pqDropConnection(). Moving the operation means that we clear the command queue immediately upon detecting connection drop, which improves the sanity of subsequent behavior. In particular this eliminates duplicated error message text as a consequence of code added in b15f25446, which supposed that a nonempty command queue must mean the prior operation is still active. There might be an argument for backpatching this to v14; but as with b15f25446, I'm unsure about interactions with 618c16707. For now, given the lack of complaints about v14's behavior, leave it alone. Per report from Peter Eisentraut. Discussion: https://postgr.es/m/de57761c-b99b-3435-b0a6-474c72b1149a@enterprisedb.com
2022-05-12Mark a few 'bbsink' related functions / variables static.Andres Freund
Discussion: https://postgr.es/m/20220506234924.6mxxotl3xl63db3l@alap3.anarazel.de
2022-05-12Make pull_var_clause() handle GroupingFuncs exactly like Aggrefs.Tom Lane
This follows in the footsteps of commit 2591ee8ec by removing one more ill-advised shortcut from planning of GroupingFuncs. It's true that we don't intend to execute the argument expression(s) at runtime, but we still have to process any Vars appearing within them, or we risk failure at setrefs.c time (or more fundamentally, in EXPLAIN trying to print such an expression). Vars in upper plan nodes have to have referents in the next plan level, whether we ever execute 'em or not. Per bug #17479 from Michael J. Sullivan. Back-patch to all supported branches. Richard Guo Discussion: https://postgr.es/m/17479-6260deceaf0ad304@postgresql.org
2022-05-12relnotes: adjust several logical replication items and FK textBruce Momjian
Reported-by: Amit Langote, Amit Kapila, Takamichi Osumi Discussion: https://postgr.es/m/CAA4eK1KdAho_fNkYRe=o=XpxWs_TG4O0V8CJBAvTG8HamWt6OQ@mail.gmail.com
2022-05-12postgres_fdw: Update comments in make_new_connection().Etsuro Fujita
Expand the comment about the parallel_commit option to mention that the default is false. Also, since the comment about alteration of the keep_connections option, which was located above the expanded comment, holds true for the parallel_commit option, rewrite it to reflect this, and move it to after the expanded comment. Follow-up for commit 04e706d42. Discussion: https://postgr.es/m/CAPmGK16Kg2Bf90sqzcZ4YM5cN_G-4h7wFUS01qQpqNB%2B2BG5_w%40mail.gmail.com
2022-05-12Add some missing PGDLLIMPORT markingsMichael Paquier
Three variables in pqsignal.h (UnBlockSig, BlockSig and StartupBlockSig) were not marked with PGDLLIMPORT, as they are declared in a way that prevents mark_pgdllimport.pl to detect them. These variables are redefined in a style more consistent with the other headers, allowing the script to find and mark them. PGDLLIMPORT was missing for __pg_log_level in logging.h, so add it back. The marking got accidentally removed in 9a374b77, just after its addition in 8ec5694. While on it, add a comment in mark_pgdllimport.pl explaining what are the arguments needed by the script (aka a list of header paths). Reported-by: Andres Freund Discussion: https://postgr.es/m/20220506234924.6mxxotl3xl63db3l@alap3.anarazel.de
2022-05-12relnotes: mention non-exclusive backup mode was deprecatedBruce Momjian
Reported-by: Ian Lawrence Barwick Discussion: https://postgr.es/m/CAB8KJ=j9VhsFXuN+xv5qzxQV7gj-6TKqqwVLSgz5zU7F8nHCYw@mail.gmail.com
2022-05-12Use correct datum macros in more tuplesort specialization functions.John Naylor
Also clarify that ApplySignedSortComparator() is not built on 32-bit machines. Folow-up to c90c16591 Reviewed-by: David Rowley Discussion: https://www.postgresql.org/message-id/CAFBsxsFmt4_JUP8XgSJqwaAS9a9s8K8_PvMu%3Dj%3DDfwU%3D8QjNPw%40mail.gmail.com
2022-05-12relnotes: add author to in-memory sorts itemBruce Momjian
Reported-by: Thomas Munro Discussion: https://postgr.es/m/CA+hUKGKha50-H2ye-9x3PJWU5wBq_MPc2rmVKM1xJ0tL+ntROw@mail.gmail.com
2022-05-12relnotes: update for non-exclusive backup mode removalBruce Momjian
Reported-by: Ian Lawrence Barwick Discussion: https://postgr.es/m/CAB8KJ=jmLBMAmxjcew12-yntb7m3FH-8A2+Qb7+RybZp1w9GOg@mail.gmail.com
2022-05-12relnote: improve sorting entriesBruce Momjian
Reported-by: David Rowley Discussion: https://postgr.es/m/CAApHDvrToHFvL-W03vSi6T50uScyhrdUGzTtcuLAjdjtRF8FLA@mail.gmail.com
2022-05-11Remove non-functional code for unloading loadable modules.Robert Haas
The code for unloading a library has been commented-out for over 12 years, ever since commit 602a9ef5a7c60151e10293ae3c4bb3fbb0132d03, and we're no closer to supporting it now than we were back then. Nathan Bossart, reviewed by Michael Paquier and by me. Discussion: http://postgr.es/m/Ynsc9bRL1caUSBSE@paquier.xyz
2022-05-11relnotes: adjustments from Álvaro HerreraBruce Momjian
Reported-by: Álvaro Herrera Discussion: https://postgr.es/m/202205111412.n7xgu3eppins@alvherre.pgsql
2022-05-11relnotes: update foreign key partition and add sort itemsBruce Momjian
Reported-by: David Rowley, Amit Langote Discussion: https://postgr.es/m/CA+HiwqFcEdbNinfK94aTgBJKmtkYGdtkPnjt3b0fVzKi+WZ+KA@mail.gmail.com
2022-05-11Fix typos and grammar in code and test commentsMichael Paquier
This fixes the grammar of some comments in a couple of tests (SQL and TAP), and in some C files. Author: Justin Pryzby Discussion: https://postgr.es/m/20220511020334.GH19626@telsasoft.com
2022-05-11Add logging for excessive ProcSignalBarrier waits.Thomas Munro
To enable diagnosis of systems that are not processing ProcSignalBarrier requests promptly, add a LOG message every 5 seconds if we seem to be wedged. Although you could already see this state as a wait event in pg_stat_activity, the log message also shows the PID of the process that is preventing progress. Also add DEBUG1 logging around the whole wait loop. Reviewed-by: Robert Haas <robertmhaas@gmail.com> Discussion: https://postgr.es/m/CA%2BTgmoYJ03r5359gQutRGP9BtigYCg3_UskcmnVjBf-QO3-0pQ%40mail.gmail.com
2022-05-11Fix the logical replication timeout during large transactions.Amit Kapila
The problem is that we don't send keep-alive messages for a long time while processing large transactions during logical replication where we don't send any data of such transactions. This can happen when the table modified in the transaction is not published or because all the changes got filtered. We do try to send the keep_alive if necessary at the end of the transaction (via WalSndWriteData()) but by that time the subscriber-side can timeout and exit. To fix this we try to send the keepalive message if required after processing certain threshold of changes. Reported-by: Fabrice Chapuis Author: Wang wei and Amit Kapila Reviewed By: Masahiko Sawada, Euler Taveira, Hou Zhijie, Hayato Kuroda Backpatch-through: 10 Discussion: https://postgr.es/m/CAA5-nLARN7-3SLU_QUxfy510pmrYK6JJb=bk3hcgemAM_pAv+w@mail.gmail.com
2022-05-11Silence extra logging when using "postgres -C" on runtime-computed GUCsMichael Paquier
Presently, the server may emit a variety of log messages when inspecting a runtime-computed GUC, mostly in the shape of one LOG message with the default configuration, related to the startup sequence launched as such GUCs require a load of the control file and of external shared libraries. For example, the server will always emit a "database system is shut down" LOG (unless the user has set log_min_messages higher than LOG), which is an annoying behavior as "postgres -C" is expected to only emit in its output the parameter value we are looking for. The parameter value is sent to stdout, while the logs are sent to stderr so we could recommend to use a redirection, but there was not much love for this workaround either. To avoid such extra log messages, per discussion, this change sets log_min_messages to FATAL internally when -C is used on a runtime-computed GUC (even if set to PANIC in postgresql.conf). At FATAL, the user will still receive messages explaining why a GUC value cannot be inspected, and will know if the command is attempted on a server already running, something not supported yet for a runtime-computed GUC. Reported-by: Magnus Hagander, Bruce Momjian Author: Nathan Bossart, Michael Paquier Discussion: https://postgr.es/m/Yni6ZHkGotUU+RSf@paquier.xyz
2022-05-11Add missing source files to nls.mkPeter Eisentraut
2022-05-11relnotes: more adjustmentsBruce Momjian
Reported-by: Justin Pryzby Discussion: https://postgr.es/m/20220511013117.GG19626@telsasoft.com
2022-05-11relnotes: logical replication permissions checked by subscrib.Bruce Momjian
Reported-by: Mark Dilger Discussion: https://postgr.es/m/F3D44160-F41A-4F2E-AED5-5C15B6903AC4@enterprisedb.com
2022-05-11relnotes: adjustmentsBruce Momjian
Remove SSL item backpatched (Jonathan S. Katz), adjust logical replication item (Mark Dilger), adjust --compress wording (Justin Pryzby). Discussion: https://postgr.es/m/20220511012854.GF19626@telsasoft.com
2022-05-11Improve setup of environment values for commands in MSVC's vcregress.plMichael Paquier
The current setup assumes that commands for lz4, zstd and gzip always exist by default if not enforced by a user's environment. However, vcpkg, as one example, installs libraries but no binaries, so this default setup to assume that a command should always be present would cause failures. This commit improves the detection of such external commands as follows: * If a ENV value is available, trust the environment/user and use it. * If a ENV value is not available, check its execution by looking in the current PATH, by launching a simple "$command --version" (that should be portable enough). ** On execution failure, ignore ENV{command}. ** On execution success, set ENV{command} = "$command". Note that this new rule applies to gzip, lz4 and zstd but not tar that we assume will always exist. Those commands are set up in the environment only when using bincheck and taptest. The CI includes all those commands and I have checked that their setup is correct there. I have also tested this change in a MSVC environment where we have none of those commands. While on it, remove the references to lz4 from the documentation and vcregress.pl in ~v13. --with-lz4 has been added in v14~ so there is no point to have this information in these older branches. Reported-by: Andrew Dunstan Reviewed-by: Andrew Dunstan Discussion: https://postgr.es/m/14402151-376b-a57a-6d0c-10ad12608e12@dunslane.net Backpatch-through: 10
2022-05-10Fix some incorrect preprocessor tests in tuplesort specializationsDavid Rowley
697492434 added 3 new quicksort specialization functions for common datatypes. That commit was not very consistent in how it would determine if we're compiling for 32-bit or 64-bit machines. It would sometimes use USE_FLOAT8_BYVAL and at other times check if SIZEOF_DATUM == 8. This could cause theoretical problems due to the way USE_FLOAT8_BYVAL is now defined based on SIZEOF_VOID_P >= 8. If pointers for some reason were ever larger than 8-bytes then we'd end up doing 32-bit comparisons mistakenly. Let's just always check SIZEOF_DATUM >= 8. It also seems that ssup_datum_signed_cmp is just never used on 32-bit builds, so let's just ifdef that out to make sure we never accidentally use that comparison function on such machines. This also allows us to ifdef out 1 of the 3 new specialization quicksort functions in 32-bit builds which seems to shrink down the binary by over 4KB on my machine. In passing, also add the missing DatumGetInt32() / DatumGetInt64() macros in the comparison functions. Discussion: https://postgr.es/m/CAApHDvqcQExRhtRa9hJrJB_5egs3SUfOcutP3m+3HO8A+fZTPA@mail.gmail.com Reviewed-by: John Naylor
2022-05-10configure: don't probe for libldap_r if libldap is 2.5 or newer.Tom Lane
In OpenLDAP 2.5 and later, libldap itself is always thread-safe and there's never a libldap_r. Our existing coding dealt with that by assuming it wouldn't find libldap_r if libldap is thread-safe. But that rule fails to cope if there are multiple OpenLDAP versions visible, as is likely to be the case on macOS in particular. We'd end up using shiny new libldap in the backend and a hoary libldap_r in libpq. Instead, once we've found libldap, check if it's >= 2.5 (by probing for a function introduced then) and don't bother looking for libldap_r if so. While one can imagine library setups that this'd still give the wrong answer for, they seem unlikely to occur in practice. Per report from Peter Eisentraut. Back-patch to all supported branches. Discussion: https://postgr.es/m/fedacd7c-2a38-25c9-e7ff-dea549d0e979@enterprisedb.com
2022-05-10relnotes: adjust sections for various itemsBruce Momjian
Also improve postgres_fdw.application_name Reported-by: Justin Pryzby, Tatsuo Ishii Diagnosed-by: 20220510210235.GD19626@telsasoft.com
2022-05-10relnote: add ARM64 spinlock itemBruce Momjian
Reported-by: Jonathan Katz Discussion: per private email
2022-05-10relnotes: remove sequence replication and update 'postgres -C'Bruce Momjian
Reported-by: Nathan Bossart, Jonathan Katz Discussion: https://postgr.es/m/20220510194456.GA3716556@nathanxps13
2022-05-10relnote: extensive updatesBruce Momjian
Reported-by: Erik Rijkers, Justin Pryzby Discussion: https://postgr.es/m/20220510180935.GB19626@telsasoft.com
2022-05-10Formatting and punctuation improvements in sample configuration filesPeter Eisentraut
2022-05-10Remove some tabs in SQL code in C string literalsPeter Eisentraut
This is not handled uniformly throughout the code, but at least nearby code can be consistent.
2022-05-10doc: Update SQL keywords for SQL:2016 technical corrigendaPeter Eisentraut
Several keywords were missing or misclassified in the original SQL:2016 standard. This has been corrected in later technical corrigenda. This change updates the PostgreSQL documentation accordingly. This also fixes a mistake in 606948b058d: The keywords JSON_SCALAR and JSON_SERIALIZE added there are not from SQL:2016 but from future SQL:202x, so they don't belong in that list yet. (606948b058d also added JSON to the reserved list, which is what the corrigendum also does, but failed to remove it from the nonreserved list.)
2022-05-10relnotes: "training" -> "trailing"Bruce Momjian
Reported-by: Geoff Winkless Discussion: https://postgr.es/m/CAEzk6fdF_J4jqicLz=FZ6R1u2EjpEtmzD55tFjVbxw-O-kR1=w@mail.gmail.com
2022-05-10doc: first draft of PG 15 release notesBruce Momjian
2022-05-10Fix several issues with the TAP tests of pg_upgradeMichael Paquier
This commit addresses the following issues in the TAP tests of pg_upgrade, introduced in 322becb: - Remove --port and --host for commands that already rely on a node's environment PGHOST and PGPORT. - Switch from run_log() to command_ok(), as all the commands executed in the tests should succeed. - Change EXTRA_REGRESS_OPTS to make it count as a shell fragment (fixing s/OPT/OPTS on a way), to be compatible with the various Makefiles using it as well as 027_stream_regress.pl in the recovery tests. The command built for the execution the pg_regress command is reformatted, while on it, to map with the recovery test doing the same thing (we should refactor and consolidate that in the future, perhaps). - Re-add the test for database names stressing the behavior of backslashes with double quotes, mostly here for Windows. Tests doable with the upgrade across different major versions still work the same way. Reported-by: Noah Misch Discussion: https://postgr.es/m/20220502042718.GB1565149@rfd.leadboat.com
2022-05-09Fix core dump in transformValuesClause when there are no columns.Tom Lane
The parser code that transformed VALUES from row-oriented to column-oriented lists failed if there were zero columns. You can't write that straightforwardly (though probably you should be able to), but the case can be reached by expanding a "tab.*" reference to a zero-column table. Per bug #17477 from Wang Ke. Back-patch to all supported branches. Discussion: https://postgr.es/m/17477-0af3c6ac6b0a6ae0@postgresql.org
2022-05-09Revert "Disallow infinite endpoints in generate_series() for timestamps."Tom Lane
This reverts commit eafdf9de06e9b60168f5e47cedcfceecdc6d4b5f and its back-branch counterparts. Corey Huinker pointed out that we'd discussed this exact change back in 2016 and rejected it, on the grounds that there's at least one usage pattern with LIMIT where an infinite endpoint can usefully be used. Perhaps that argument needs to be re-litigated, but there's no time left before our back-branch releases. To keep our options open, restore the status quo ante; if we do end up deciding to change things, waiting one more quarter won't hurt anything. Rather than just doing a straight revert, I added a new test case demonstrating the usage with LIMIT. That'll at least remind us of the issue if we forget again. Discussion: https://postgr.es/m/3603504.1652068977@sss.pgh.pa.us Discussion: https://postgr.es/m/CADkLM=dzw0Pvdqp5yWKxMd+VmNkAMhG=4ku7GnCZxebWnzmz3Q@mail.gmail.com
2022-05-09In REFRESH MATERIALIZED VIEW, set user ID before running user code.Noah Misch
It intended to, but did not, achieve this. Adopt the new standard of setting user ID just after locking the relation. Back-patch to v10 (all supported versions). Reviewed by Simon Riggs. Reported by Alvaro Herrera. Security: CVE-2022-1552