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1844 Commits

Author SHA1 Message Date
Michael Paquier
dde5b01c33 Fix various issues with ALTER TEXT SEARCH CONFIGURATION
This commit addresses a set of issues when changing token type mappings
in a text search configuration when using duplicated token names:
- ADD MAPPING would fail on insertion because of a constraint failure
after inserting the same mapping.
- ALTER MAPPING with an "overridden" configuration failed with "tuple
already updated by self" when the token mappings are removed.
- DROP MAPPING failed with "tuple already updated by self", like
previously, but in a different code path.

The code is refactored so the token names (with their numbers) are
handled as a List with unique members rather than an array with numbers,
ensuring that no duplicates mess up with the catalog inserts, updates
and deletes.  The list is generated by getTokenTypes(), with the same
error handling as previously while duplicated tokens are discarded from
the list used to work on the catalogs.

Regression tests are expanded to cover much more ground for the cases
fixed by this commit, as there was no coverage for the code touched in
this commit.  A bit more is done regarding the fact that a token name
not supported by a configuration's parser should result in an error even
if IF EXISTS is used in a DROP MAPPING clause.  This is implied in the
code but there was no coverage for that, and it was very easy to miss.

These issues exist since at least their introduction in core with
140d4ebcb4, so backpatch all the way down.

Reported-by: Alexander Lakhin
Author: Tender Wang, Michael Paquier
Discussion: https://postgr.es/m/18310-1eb233c5908189c8@postgresql.org
Backpatch-through: 12
2024-01-31 13:16:47 +09:00
Tom Lane
b2b1f12882 Use BIO_{get,set}_app_data instead of BIO_{get,set}_data.
We should have done it this way all along, but we accidentally got
away with using the wrong BIO field up until OpenSSL 3.2.  There,
the library's BIO routines that we rely on use the "data" field
for their own purposes, and our conflicting use causes assorted
weird behaviors up to and including core dumps when SSL connections
are attempted.  Switch to using the approved field for the purpose,
i.e. app_data.

While at it, remove our configure probes for BIO_get_data as well
as the fallback implementation.  BIO_{get,set}_app_data have been
there since long before any OpenSSL version that we still support,
even in the back branches.

Also, update src/test/ssl/t/001_ssltests.pl to allow for a minor
change in an error message spelling that evidently came in with 3.2.

Tristan Partin and Bo Andreson.  Back-patch to all supported branches.

Discussion: https://postgr.es/m/CAN55FZ1eDDYsYaL7mv+oSLUij2h_u6hvD4Qmv-7PK7jkji0uyQ@mail.gmail.com
2023-11-28 12:34:03 -05:00
Thomas Munro
e2452c2a63 Fix exception safety bug in typcache.c.
If an out-of-memory error was thrown at an unfortunate time,
ensure_record_cache_typmod_slot_exists() could leak memory and leave
behind a global state that produced an infinite loop on the next call.

Fix by merging RecordCacheArray and RecordIdentifierArray into a single
array.  With only one allocation or re-allocation, there is no
intermediate state.

Back-patch to all supported releases.

Reported-by: "James Pang (chaolpan)" <chaolpan@cisco.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/PH0PR11MB519113E738814BDDA702EDADD6EFA%40PH0PR11MB5191.namprd11.prod.outlook.com
2023-09-13 14:46:16 +12:00
Andrew Dunstan
7f4515a58e Cache by-reference missing values in a long lived context
Attribute missing values might be needed past the lifetime of the tuple
descriptors from which they are extracted. To avoid possibly using
pointers for by-reference values which might thus be left dangling, we
cache a datumCopy'd version of the datum in the TopMemoryContext. Since
we first search for the value this only needs to be done once per
session for any such value.

Original complaint from Tom Lane, idea for mitigation by Andrew Dunstan,
tweaked by Tom Lane.

Backpatch to version 11 where missing values were introduced.

Discussion: https://postgr.es/m/1306569.1687978174@sss.pgh.pa.us
2023-08-22 15:15:45 -04:00
Michael Paquier
34105eea62 Fix detection of unseekable files for fseek() and ftello() with MSVC
Calling fseek() or ftello() on a handle to a non-seeking device such as
a pipe or a communications device is not supported.  Unfortunately,
MSVC's flavor of these routines, _fseeki64() and _ftelli64(), do not
return an error when given a pipe as handle.  Some of the logic of
pg_dump and restore relies on these routines to check if a handle is
seekable, causing failures when passing the contents of pg_dump to
pg_restore through a pipe, for example.

This commit introduces wrappers for fseeko() and ftello() on MSVC so as
any callers are able to properly detect the cases of non-seekable
handles.  This relies mainly on GetFileType(), sharing a bit of code
with the MSVC port for fstat().  The code in charge of getting a file
type is refactored into a new file called win32common.c, shared by
win32stat.c and the new win32fseek.c.  It includes the MSVC ports for
fseeko() and ftello().

Like 765f5df, this is backpatched down to 14, where the fstat()
implementation for MSVC is able to understand about files larger than
4GB in size.  Using a TAP test for that is proving to be tricky as
IPC::Run handles the pipes by itself, still I have been able to check
the fix manually.

Reported-by: Daniel Watzinger
Author: Juan José Santamaría Flecha, Michael Paquier
Discussion: https://postgr.es/m/CAC+AXB26a4EmxM2suXxPpJaGrqAdxracd7hskLg-zxtPB50h7A@mail.gmail.com
Backpatch-through: 14
2023-04-12 09:09:58 +09:00
Andrew Dunstan
4d68338b26 Don't force SQL_ASCII/no-locale for installcheck in vcregress.pl
It's been this way for a very long time, but it appears to have been
masking an issue that only manifests with different settings. Therefore,
run the tests in the installation's default encoding/locale.

Backpatch to all live branches.
2023-02-26 06:54:58 -05:00
Michael Paquier
864f80fead Fix handling of SCRAM-SHA-256's channel binding with RSA-PSS certificates
OpenSSL 1.1.1 and newer versions have added support for RSA-PSS
certificates, which requires the use of a specific routine in OpenSSL to
determine which hash function to use when compiling it when using
channel binding in SCRAM-SHA-256.  X509_get_signature_nid(), that is the
original routine the channel binding code has relied on, is not able to
determine which hash algorithm to use for such certificates.  However,
X509_get_signature_info(), new to OpenSSL 1.1.1, is able to do it.  This
commit switches the channel binding logic to rely on
X509_get_signature_info() over X509_get_signature_nid(), which would be
the choice when building with 1.1.1 or newer.

The error could have been triggered on the client or the server, hence
libpq and the backend need to have their related code paths patched.
Note that attempting to load an RSA-PSS certificate with OpenSSL 1.1.0
or older leads to a failure due to an unsupported algorithm.

The discovery of relying on X509_get_signature_info() comes from Jacob,
the tests have been written by Heikki (with few tweaks from me), while I
have bundled the whole together while adding the bits needed for MSVC
and meson.

This issue exists since channel binding exists, so backpatch all the way
down.  Some tests are added in 15~, triggered if compiling with OpenSSL
1.1.1 or newer, where the certificate and key files can easily be
generated for RSA-PSS.

Reported-by: Gunnar "Nick" Bluth
Author: Jacob Champion, Heikki Linnakangas
Discussion: https://postgr.es/m/17760-b6c61e752ec07060@postgresql.org
Backpatch-through: 11
2023-02-15 10:12:33 +09:00
Michael Paquier
0801345758 Make EXEC_BACKEND more convenient on Linux and FreeBSD.
Try to disable ASLR when building in EXEC_BACKEND mode, to avoid random
memory mapping failures while testing.  For developer use only, no
effect on regular builds.

This has been originally applied as of f3e7806 for v15~, but
recently-added buildfarm member gokiburi tests this configuration on
older branches as well, causing it to fail randomly as ASLR would be
enabled.

Suggested-by: Andres Freund <andres@anarazel.de>
Tested-by: Bossart, Nathan <bossartn@amazon.com>
Discussion: https://postgr.es/m/20210806032944.m4tz7j2w47mant26%40alap3.anarazel.de
Backpatch-through: 12
2023-02-08 13:09:27 +09:00
Andrew Dunstan
f3f70b8de6 Fix binary mismatch for MSVC plperl vs gcc built perl libs
When loading plperl built against Strawberry perl or the msys2 ucrt perl
that have been built with gcc, a binary mismatch has been encountered
which looks like this:

loadable library and perl binaries are mismatched (got handshake key 0000000012800080, needed 0000000012900080)

To cure this we bring the handshake keys into sync by adding
NO_THREAD_SAFE_LOCALE to the defines used to build plperl.

Discussion: https://postgr.es/m/20211005004334.tgjmro4kuachwiuc@alap3.anarazel.de
Discussion: https://postgr.es/m/c2da86a0-2906-744c-923d-16da6047875e@dunslane.net

Backpatch to all live branches.
2022-11-27 09:18:20 -05:00
Michael Paquier
ca9e9b08e4 Improve setup of environment values for commands in MSVC's vcregress.pl
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
2022-05-11 10:22:29 +09:00
Alvaro Herrera
adc943b4e1 Revert "Fix replay of create database records on standby"
This reverts commit 49d9cfc68b.  The approach taken by this patch has
problems, so we'll come up with a radically different fix.

Discussion: https://postgr.es/m/CA+TgmoYcUPL+WOJL2ZzhH=zmrhj0iOQ=iCFM0SuYqBbqZEamEg@mail.gmail.com
2022-03-29 15:36:21 +02:00
Alvaro Herrera
ffd28516e6 Fix replay of create database records on standby
Crash recovery on standby may encounter missing directories when
replaying create database WAL records.  Prior to this patch, the standby
would fail to recover in such a case.  However, the directories could be
legitimately missing.  Consider a sequence of WAL records as follows:

    CREATE DATABASE
    DROP DATABASE
    DROP TABLESPACE

If, after replaying the last WAL record and removing the tablespace
directory, the standby crashes and has to replay the create database
record again, the crash recovery must be able to move on.

This patch adds a mechanism similar to invalid-page tracking, to keep a
tally of missing directories during crash recovery.  If all the missing
directory references are matched with corresponding drop records at the
end of crash recovery, the standby can safely continue following the
primary.

Backpatch to 13, at least for now.  The bug is older, but fixing it in
older branches requires more careful study of the interactions with
commit e6d8069522, which appeared in 13.

A new TAP test file is added to verify the condition.  However, because
it depends on commit d6d317dbf6, it can only be added to branch
master.  I (Álvaro) manually verified that the code behaves as expected
in branch 14.  It's a bit nervous-making to leave the code uncovered by
tests in older branches, but leaving the bug unfixed is even worse.
Also, the main reason this fix took so long is precisely that we
couldn't agree on a good strategy to approach testing for the bug, so
perhaps this is the best we can do.

Diagnosed-by: Paul Guo <paulguo@gmail.com>
Author: Paul Guo <paulguo@gmail.com>
Author: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Author: Asim R Praveen <apraveen@pivotal.io>
Discussion: https://postgr.es/m/CAEET0ZGx9AvioViLf7nbR_8tH9-=27DN5xWJ2P9-ROH16e4JUA@mail.gmail.com
2022-03-25 13:16:21 +01:00
Tom Lane
2e30d77a19 Suppress warning about stack_base_ptr with late-model GCC.
GCC 12 complains that set_stack_base is storing the address of
a local variable in a long-lived pointer.  This is an entirely
reasonable warning (indeed, it just helped us find a bug);
but that behavior is intentional here.  We can work around it
by using __builtin_frame_address(0) instead of a specific local
variable; that produces an address a dozen or so bytes different,
in my testing, but we don't care about such a small difference.
Maybe someday a compiler lacking that function will start to issue
a similar warning, but we'll worry about that when it happens.

Patch by me, per a suggestion from Andres Freund.  Back-patch to
v12, which is as far back as the patch will go without some pain.
(Recently-established project policy would permit a back-patch as
far as 9.2, but I'm disinclined to expend the work until GCC 12
is much more widespread.)

Discussion: https://postgr.es/m/3773792.1645141467@sss.pgh.pa.us
2022-02-17 22:45:34 -05:00
Tom Lane
c23461a22a Test honestly for <sys/signalfd.h>.
Commit 6a2a70a02 supposed that any platform having <sys/epoll.h>
would also have <sys/signalfd.h>.  It turns out there are still a
few people using platforms where that's not so, so we'd better make
a separate configure probe for it.  But since it took this long to
notice, I'm content with the decision to not have a separate code
path for epoll-only machines; we'll just fall back to using poll()
for these stragglers.

Per gripe from Gabriela Serventi.  Back-patch to v14 where this
code came in.

Discussion: https://postgr.es/m/CAHOHWE-JjJDfcYuLAAEO7Jk07atFAU47z8TzHzg71gbC0aMy=g@mail.gmail.com
2022-02-09 14:24:55 -05:00
Andrew Dunstan
156a846d93 Allow clean.bat to be run from anywhere
This was omitted from c3879a7b4c which modified the other msvc .bat
files.

Per request from Juan José Santamaría Flecha

Discussion: https://postgr.es/m/CAC+AXB0_fxYGbQoaYjCA8um7TTbOVP4L9aXnVmHwK8WzaT4gdA@mail.gmail.com

Backpatch to all live branches.
2022-01-20 10:20:40 -05:00
Michael Paquier
ad5b6f248a Revert error handling improvements for cryptohashes
This reverts commits ab27df2, af8d530 and 3a0cced, that introduced
pg_cryptohash_error().  In order to make the core code able to pass down
the new error types that this introduced, some of the MD5-related
routines had to be reworked, causing an ABI breakage, but we found that
some external extensions rely on them.  Maintaining compatibility
outweights the error report benefits, so just revert the change in v14.

Reported-by: Laurenz Albe
Discussion: https://postgr.es/m/9f0c0a96d28cf14fc87296bbe67061c14eb53ae8.camel@cybertec.at
2022-01-14 11:25:39 +09:00
Michael Paquier
3a0cced86d Improve error handling of cryptohash computations
The existing cryptohash facility was causing problems in some code paths
related to MD5 (frontend and backend) that relied on the fact that the
only type of error that could happen would be an OOM, as the MD5
implementation used in PostgreSQL ~13 (the in-core implementation is
used when compiling with or without OpenSSL in those older versions),
could fail only under this circumstance.

The new cryptohash facilities can fail for reasons other than OOMs, like
attempting MD5 when FIPS is enabled (upstream OpenSSL allows that up to
1.0.2, Fedora and Photon patch OpenSSL 1.1.1 to allow that), so this
would cause incorrect reports to show up.

This commit extends the cryptohash APIs so as callers of those routines
can fetch more context when an error happens, by using a new routine
called pg_cryptohash_error().  The error states are stored within each
implementation's internal context data, so as it is possible to extend
the logic depending on what's suited for an implementation.  The default
implementation requires few error states, but OpenSSL could report
various issues depending on its internal state so more is needed in
cryptohash_openssl.c, and the code is shaped so as we are always able to
grab the necessary information.

The core code is changed to adapt to the new error routine, painting
more "const" across the call stack where the static errors are stored,
particularly in authentication code paths on variables that provide
log details.  This way, any future changes would warn if attempting to
free these strings.  The MD5 authentication code was also a bit blurry
about the handling of "logdetail" (LOG sent to the postmaster), so
improve the comments related that, while on it.

The origin of the problem is 87ae969, that introduced the centralized
cryptohash facility.  Extra changes are done for pgcrypto in v14 for the
non-OpenSSL code path to cope with the improvements done by this
commit.

Reported-by: Michael Mühlbeyer
Author: Michael Paquier
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/89B7F072-5BBE-4C92-903E-D83E865D9367@trivadis.com
Backpatch-through: 14
2022-01-11 09:55:24 +09:00
Andrew Dunstan
1cd46f168f Avoid warning about uninitialized value in MSVC python3 tests
Juan José Santamaría Flecha

Backpatch to all live branches
2022-01-10 10:12:23 -05:00
Andrew Dunstan
a7772e8748 Allow MSVC .bat wrappers to be called from anywhere
Instead of using a hardcoded or default path to the perl file the .bat
file is a wrapper for, we use a path that means the file is found in
the same directory as the .bat file.

Patch by Anton Voloshin, slightly tweaked by me.

Backpatch to all live branches

Discussion: https://postgr.es/m/2b7a674b-5fb0-d264-75ef-ecc7a31e54f8@postgrespro.ru
2022-01-07 16:14:04 -05:00
Michael Paquier
4ddbd7456a Adjust behavior of some env settings for the TAP tests of MSVC
edc2332 has introduced in vcregress.pl some control on the environment
variables LZ4, TAR and GZIP_PROGRAM to allow any TAP tests to be able
use those commands.  This makes the settings more consistent with
src/Makefile.global.in, as the same default gets used for Make and MSVC
builds.

Each parameter can be changed in buildenv.pl, but as a default gets
assigned after loading buldenv.pl, it is not possible to unset any of
these, and using an empty value would not work with "||=" either.  As
some environments may not have a compatible command in their PATH (tar
coming from MinGW is an issue, for one), this could break tests without
an exit path to bypass any failing test.  This commit changes things so
as the default values for LZ4, TAR and GZIP_PROGRAM are assigned before
loading buildenv.pl, not after.  This way, we keep the same amount of
compatibility as a GNU build with the same defaults, and it becomes
possible to unset any of those values.

While on it, this adds some documentation about those three variables in
the section dedicated to the TAP tests for MSVC.

Per discussion with Andrew Dunstan.

Discussion: https://postgr.es/m/YbGYe483803il3X7@paquier.xyz
Backpatch-through: 10
2021-12-15 10:40:08 +09:00
Andrew Dunstan
93094232c8 Enable settings used in TAP tests for MSVC builds
Certain settings from configuration or the Makefile infrastructure are
used by the TAP tests, but were not being set up by vcregress.pl. This
remedies those omissions. This should increase test coverage, especially
on the buildfarm.

Reviewed by Noah Misch

Discussion: https://postgr.es/m/17093da5-e40d-8335-d53a-2bd803fc38b0@dunslane.net

Backpatch to all live branches.
2021-12-07 15:01:16 -05:00
Michael Paquier
0e681fa458 Add support for Visual Studio 2022 in build scripts
Documentation and any code paths related to VS are updated to keep the
whole consistent.  Similarly to 2017 and 2019, the version of VS and the
version of nmake that we use to determine which code paths to use for
the build are still inconsistent in their own way.

Backpatch down to 10, so as buildfarm members are able to use this new
version of Visual Studio on all the stable branches supported.

Author: Hans Buschmann
Discussion: https://postgr.es/m/1633101364685.39218@nidsa.net
Backpatch-through: 10
2021-11-24 13:03:55 +09:00
Noah Misch
dde966efb2 Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY.
CIC and REINDEX CONCURRENTLY assume backends see their catalog changes
no later than each backend's next transaction start.  That failed to
hold when a backend absorbed a relevant invalidation in the middle of
running RelationBuildDesc() on the CIC index.  Queries that use the
resulting index can silently fail to find rows.  Fix this for future
index builds by making RelationBuildDesc() loop until it finishes
without accepting a relevant invalidation.  It may be necessary to
reindex to recover from past occurrences; REINDEX CONCURRENTLY suffices.
Back-patch to 9.6 (all supported versions).

Noah Misch and Andrey Borodin, reviewed (in earlier versions) by Andres
Freund.

Discussion: https://postgr.es/m/20210730022548.GA1940096@gust.leadboat.com
2021-10-23 18:36:42 -07:00
Andrew Dunstan
52c0c11367 Add module build directory to the PATH for TAP tests
For non-MSVC builds this is make's $(CURDIR), while for MSVC builds it
is $topdir/$Config/$module. The directory is added as the second element
in the PATH, so that the install location takes precedence, but the
added PATH element takes precedence over the rest of the PATH.

The reason for this is to allow tests to find built products that are
not installed, such as the libpq_pipeline test driver.

The libpq_pipeline test is adjusted to take advantage of this.

Based on a suggestion from Andres Freund.

Backpatch to release 14.

Discussion: https://postgr.es/m/4941f5a5-2d50-1a0e-6701-14c5fefe92d6@dunslane.net
2021-10-22 09:50:16 -04:00
Michael Paquier
81aefaea82 Fix build of MSVC with OpenSSL 3.0.0
The build scripts of Visual Studio would fail to detect properly a 3.0.0
build as the check on the second digit was failing.  This is adjusted
where needed, allowing the builds to complete.  Note that the MSIs of
OpenSSL mentioned in the documentation have not changed any library
names for Win32 and Win64, making this change straight-forward.

Reported-by: htalaco, via github
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/YW5XKYkq6k7OtrFq@paquier.xyz
Backpatch-through: 9.6
2021-10-20 16:48:57 +09:00
Alvaro Herrera
64a8687a68 Fix WAL replay in presence of an incomplete record
Physical replication always ships WAL segment files to replicas once
they are complete.  This is a problem if one WAL record is split across
a segment boundary and the primary server crashes before writing down
the segment with the next portion of the WAL record: WAL writing after
crash recovery would happily resume at the point where the broken record
started, overwriting that record ... but any standby or backup may have
already received a copy of that segment, and they are not rewinding.
This causes standbys to stop following the primary after the latter
crashes:
  LOG:  invalid contrecord length 7262 at A8/D9FFFBC8
because the standby is still trying to read the continuation record
(contrecord) for the original long WAL record, but it is not there and
it will never be.  A workaround is to stop the replica, delete the WAL
file, and restart it -- at which point a fresh copy is brought over from
the primary.  But that's pretty labor intensive, and I bet many users
would just give up and re-clone the standby instead.

A fix for this problem was already attempted in commit 515e3d84a0, but
it only addressed the case for the scenario of WAL archiving, so
streaming replication would still be a problem (as well as other things
such as taking a filesystem-level backup while the server is down after
having crashed), and it had performance scalability problems too; so it
had to be reverted.

This commit fixes the problem using an approach suggested by Andres
Freund, whereby the initial portion(s) of the split-up WAL record are
kept, and a special type of WAL record is written where the contrecord
was lost, so that WAL replay in the replica knows to skip the broken
parts.  With this approach, we can continue to stream/archive segment
files as soon as they are complete, and replay of the broken records
will proceed across the crash point without a hitch.

Because a new type of WAL record is added, users should be careful to
upgrade standbys first, primaries later. Otherwise they risk the standby
being unable to start if the primary happens to write such a record.

A new TAP test that exercises this is added, but the portability of it
is yet to be seen.

This has been wrong since the introduction of physical replication, so
backpatch all the way back.  In stable branches, keep the new
XLogReaderState members at the end of the struct, to avoid an ABI
break.

Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: Nathan Bossart <bossartn@amazon.com>
Discussion: https://postgr.es/m/202108232252.dh7uxf6oxwcy@alvherre.pgsql
2021-09-29 11:41:01 -03:00
Andres Freund
7890a42347 Fix performance regression from session statistics.
Session statistics, as introduced by 960869da08, had several shortcomings:

- an additional GetCurrentTimestamp() call that also impaired the accuracy of
  the data collected

  This can be avoided by passing the current timestamp we already have in
  pgstat_report_stat().

- an additional statistics UDP packet sent every 500ms

  This is solved by adding the new statistics to PgStat_MsgTabstat.
  This is conceptually ugly, because session statistics are not
  table statistics.  But the struct already contains data unrelated
  to tables, so there is not much damage done.

  Connection and disconnection are reported in separate messages, which
  reduces the number of additional messages to two messages per session and a
  slight increase in PgStat_MsgTabstat size (but the same number of table
  stats fit).

- Session time computation could overflow on systems where long is 32 bit.

Reported-By: Andres Freund <andres@anarazel.de>
Author: Andres Freund <andres@anarazel.de>
Author: Laurenz Albe <laurenz.albe@cybertec.at>
Discussion: https://postgr.es/m/20210801205501.nyxzxoelqoo4x2qc%40alap3.anarazel.de
Backpatch: 14-, where the feature was introduced.
2021-09-16 02:10:57 -07:00
Michael Paquier
1900c14055 Revert refactoring of hex code to src/common/
This is a combined revert of the following commits:
- c3826f8, a refactoring piece that moved the hex decoding code to
src/common/.  This code was cleaned up by aef8948, as it originally
included no overflow checks in the same way as the base64 routines in
src/common/ used by SCRAM, making it unsafe for its purpose.
- aef8948, a more advanced refactoring of the hex encoding/decoding code
to src/common/ that added sanity checks on the result buffer for hex
decoding and encoding.  As reported by Hans Buschmann, those overflow
checks are expensive, and it is possible to see a performance drop in
the decoding/encoding of bytea or LOs the longer they are.  Simple SQLs
working on large bytea values show a clear difference in perf profile.
- ccf4e27, a cleanup made possible by aef8948.

The reverts of all those commits bring back the performance of hex
decoding and encoding back to what it was in ~13.  Fow now and
post-beta3, this is the simplest option.

Reported-by: Hans Buschmann
Discussion: https://postgr.es/m/1629039545467.80333@nidsa.net
Backpatch-through: 14
2021-08-19 09:20:19 +09:00
Tom Lane
081e86bd9e Ensure HAVE_DECL_XXX macros in MSVC builds match those in Unix.
Autoconf's AC_CHECK_DECLS() always defines HAVE_DECL_whatever
as 1 or 0, but some of the entries in msvc/Solution.pm showed
such symbols as "undef" instead of 0.  Fix that for consistency.
There's no live bug in current usages AFAICS, but it's not hard
to imagine one creeping in if more-complex #if tests get added.

Back-patch to v13, which is as far back as Solution.pm contains
this data.  The inconsistency still exists in the manually-filled
pg_config_ext.h.win32 files of older branches; but as long as the
problem is only latent, it doesn't seem worth the trouble to
clean things up there.

Discussion: https://postgr.es/m/3185430.1626133592@sss.pgh.pa.us
2021-07-15 11:00:43 -04:00
David Rowley
47ca483644 Change the name of the Result Cache node to Memoize
"Result Cache" was never a great name for this node, but nobody managed
to come up with another name that anyone liked enough.  That was until
David Johnston mentioned "Node Memoization", which Tom Lane revised to
just "Memoize".  People seem to like "Memoize", so let's do the rename.

Reviewed-by: Justin Pryzby
Discussion: https://postgr.es/m/20210708165145.GG1176@momjian.us
Backpatch-through: 14, where Result Cache was introduced
2021-07-14 12:45:00 +12:00
Tom Lane
e75da4f1b6 Probe for preadv/pwritev in a more macOS-friendly way.
Apple's mechanism for dealing with functions that are available
in only some OS versions confuses AC_CHECK_FUNCS, and therefore
AC_REPLACE_FUNCS.  We can use AC_CHECK_DECLS instead, so long as
we enable -Werror=unguarded-availability-new.  This allows people
compiling for macOS to control whether or not preadv/pwritev are
used by setting MACOSX_DEPLOYMENT_TARGET, rather than supplying
a back-rev SDK.  (Of course, the latter still works, too.)

James Hilliard

Discussion: https://postgr.es/m/20210122193230.25295-1-james.hilliard1@gmail.com
2021-07-12 19:17:35 -04:00
Tom Lane
5620ec8336 Update configure's probe for libldap to work with OpenLDAP 2.5.
The separate libldap_r is gone and libldap itself is now always
thread-safe.  Unfortunately there seems no easy way to tell by
inspection whether libldap is thread-safe, so we have to take
it on faith that libldap is thread-safe if there's no libldap_r.
That should be okay, as it appears that libldap_r was a standard
part of the installation going back at least 20 years.

Report and patch by Adrian Ho.  Back-patch to all supported
branches, since people might try to build any of them with
a newer OpenLDAP.

Discussion: https://postgr.es/m/17083-a19190d9591946a7@postgresql.org
2021-07-09 12:38:55 -04:00
Andrew Dunstan
e1c1c30f63 Pre branch pgindent / pgperltidy run
Along the way make a slight adjustment to
src/include/utils/queryjumble.h to avoid an unused typedef.
2021-06-28 11:05:54 -04:00
Michael Paquier
d5a2c413fc Remove non-existing variable reference in MSVC's Solution.pm
The version string is grabbed from PACKAGE_VERSION in pg_config.h in the
MSVC build since 8f4fb4c6, but an error message referenced a variable
that existed before that.  This had no consequences except if one messes
up enough with the version number of the build.

Author: Anton Voloshin
Discussion: https://postgr.es/m/af79ee1b-9962-b299-98e1-f90a289e19e6@postgrespro.ru
Backpatch-through: 13
2021-06-26 13:52:48 +09:00
Peter Geoghegan
8e638845ff Add list of ignorable pgindent commits for git-blame.
Add a .git-blame-ignore-revs file with a list of pgindent, pgperlyidy,
and reformat-dat-files commit hashes.  Postgres hackers that configure
git to use the ignore file will get git-blame output that avoids
attributing line changes to the ignored indent commits.  This makes
git-blame output much easier to work with in practice.

Author: Peter Geoghegan <pg@bowt.ie>
Reviewed-By: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/CAH2-Wz=cVh3GHTP6SdLU-Gnmt2zRdF8vZkcrFdSzXQ=WhbWm9Q@mail.gmail.com
2021-06-22 09:06:32 -07:00
Andrew Dunstan
d69fcb9cae fix syntax error 2021-05-28 09:35:11 -04:00
Andrew Dunstan
fb424ae85f Report configured port in MSVC built pg_config
This is a long standing omission, discovered when trying to write code
that relied on it.

Backpatch to all live branches.
2021-05-28 09:30:16 -04:00
Michael Paquier
0251106634 Fix MSVC scripts when building with GSSAPI/Kerberos
The deliverables of upstream Kerberos on Windows are installed with
paths that do not match our MSVC scripts.  First, the include folder was
named "inc/" in our scripts, but the upstream MSIs use "include/".
Second, the build would fail with 64-bit environments as the libraries
are named differently.

This commit adjusts the MSVC scripts to be compatible with the latest
installations of upstream, and I have checked that the compilation was
able to work with the 32-bit and 64-bit installations.

Special thanks to Kondo Yuta for the help in investigating the situation
in hamerkop, which had an incorrect configuration for the GSS
compilation.

Reported-by: Brian Ye
Discussion: https://postgr.es/m/162128202219.27274.12616756784952017465@wrigleys.postgresql.org
Backpatch-through: 9.6
2021-05-27 20:11:00 +09:00
Tom Lane
413c1ef98e Avoid creating testtablespace directories where not wanted.
Recently we refactored things so that pg_regress makes the
"testtablespace" subdirectory used by the core regression tests,
instead of doing that in the makefiles.  That had the undesirable
side effect of making such a subdirectory in every directory that
has "input" or "output" test files.  Since these subdirectories
remain empty, git doesn't complain about them, but nonetheless
they're clutter.

To fix, invent an explicit --make-testtablespace-dir switch,
so that pg_regress only makes the subdirectory when explicitly
told to.

Discussion: https://postgr.es/m/2854388.1621284789@sss.pgh.pa.us
2021-05-19 14:04:01 -04:00
Tom Lane
def5b065ff Initial pgindent and pgperltidy run for v14.
Also "make reformat-dat-files".

The only change worthy of note is that pgindent messed up the formatting
of launcher.c's struct LogicalRepWorkerId, which led me to notice that
that struct wasn't used at all anymore, so I just took it out.
2021-05-12 13:14:10 -04:00
Tom Lane
0b85fa93e4 Fix vcregress.pl's ancient misspelling of --max-connections.
I copied the existing spelling of "--max_connections", but
that's just wrong :-(.  Evidently setting $ENV{MAX_CONNECTIONS}
has never actually worked in this script.  Given the lack of
complaints, it's probably not worth back-patching a fix.

Per buildfarm.

Discussion: https://postgr.es/m/899209.1620759506@sss.pgh.pa.us
2021-05-11 19:17:07 -04:00
Tom Lane
1df3555acc Get rid of the separate serial_schedule list of tests.
Having to maintain two lists of regression test scripts has proven
annoyingly error-prone.  We can achieve the effect of the
serial_schedule by running the parallel_schedule with
"--max_connections=1"; so do that and remove serial_schedule.

This causes cosmetic differences in the progress output, but it
doesn't seem worth restructuring pg_regress to avoid that.

Discussion: https://postgr.es/m/899209.1620759506@sss.pgh.pa.us
2021-05-11 17:52:13 -04:00
Michael Paquier
9ca40dcd4d Add support for LZ4 build in MSVC scripts
Since its introduction in bbe0a81, compression of table data supports
LZ4, but nothing had been done within the MSVC scripts to allow users to
build the code with this library.

This commit closes the gap by extending the MSVC scripts to be able to
build optionally with LZ4.  Getting libraries that can be used for
compilation and execution is possible as LZ4 can be compiled down to
MSVC 2010 using its source tarball.  MinGW may require extra efforts to
be able to work, and I have been able to test this only with MSVC, still
this is better than nothing to give users a way to test the feature on
Windows.

Author: Dilip Kumar
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/YJPdNeF68XpwDDki@paquier.xyz
2021-05-11 10:43:05 +09:00
Thomas Munro
c2dc19342e Revert recovery prefetching feature.
This set of commits has some bugs with known fixes, but at this late
stage in the release cycle it seems best to revert and resubmit next
time, along with some new automated test coverage for this whole area.

Commits reverted:

dc88460c: Doc: Review for "Optionally prefetch referenced data in recovery."
1d257577: Optionally prefetch referenced data in recovery.
f003d9f8: Add circular WAL decoding buffer.
323cbe7c: Remove read_page callback from XLogReader.

Remove the new GUC group WAL_RECOVERY recently added by a55a9847, as the
corresponding section of config.sgml is now reverted.

Discussion: https://postgr.es/m/CAOuzzgrn7iKnFRsB4MHp3UisEQAGgZMbk_ViTN4HV4-Ksq8zCg%40mail.gmail.com
2021-05-10 16:06:09 +12:00
Andrew Dunstan
8b82de0164 Remove extraneous newlines added by perl copyright patch 2021-05-07 11:37:37 -04:00
Andrew Dunstan
8fa6e6919c Add a copyright notice to perl files lacking one. 2021-05-07 10:56:14 -04:00
Thomas Munro
ec48314708 Revert per-index collation version tracking feature.
Design problems were discovered in the handling of composite types and
record types that would cause some relevant versions not to be recorded.
Misgivings were also expressed about the use of the pg_depend catalog
for this purpose.  We're out of time for this release so we'll revert
and try again.

Commits reverted:

1bf946bd: Doc: Document known problem with Windows collation versions.
cf002008: Remove no-longer-relevant test case.
ef387bed: Fix bogus collation-version-recording logic.
0fb0a050: Hide internal error for pg_collation_actual_version(<bad OID>).
ff942057: Suppress "warning: variable 'collcollate' set but not used".
d50e3b1f: Fix assertion in collation version lookup.
f24b1569: Rethink extraction of collation dependencies.
257836a7: Track collation versions for indexes.
cd6f479e: Add pg_depend.refobjversion.
7d1297df: Remove pg_collation.collversion.

Discussion: https://postgr.es/m/CA%2BhUKGLhj5t1fcjqAu8iD9B3ixJtsTNqyCCD4V0aTO9kAKAjjA%40mail.gmail.com
2021-05-07 21:10:11 +12:00
Tom Lane
e8ce68b0b9 Doc: update RELEASE_CHANGES checklist.
Update checklist to reflect current practice:

* The platform-specific FAQ files are long gone.

* We've never routinely updated the libbind code we borrowed, either,
and there seems no reason to start now.

* Explain current practice of running pgindent twice per cycle.

Discussion: https://postgr.es/m/4038398.1620238684@sss.pgh.pa.us
2021-05-05 23:11:28 -04:00
Amit Kapila
3fa17d3771 Use HTAB for replication slot statistics.
Previously, we used to use the array of size max_replication_slots to
store stats for replication slots. But that had two problems in the cases
where a message for dropping a slot gets lost: 1) the stats for the new
slot are not recorded if the array is full and 2) writing beyond the end
of the array if the user reduces the max_replication_slots.

This commit uses HTAB for replication slot statistics, resolving both
problems. Now, pgstat_vacuum_stat() search for all the dead replication
slots in stats hashtable and tell the collector to remove them. To avoid
showing the stats for the already-dropped slots, pg_stat_replication_slots
view searches slot stats by the slot name taken from pg_replication_slots.

Also, we send a message for creating a slot at slot creation, initializing
the stats. This reduces the possibility that the stats are accumulated
into the old slot stats when a message for dropping a slot gets lost.

Reported-by: Andres Freund
Author: Sawada Masahiko, test case by Vignesh C
Reviewed-by: Amit Kapila, Vignesh C, Dilip Kumar
Discussion: https://postgr.es/m/20210319185247.ldebgpdaxsowiflw@alap3.anarazel.de
2021-04-27 09:09:11 +05:30
Fujii Masao
8ff1c94649 Allow TRUNCATE command to truncate foreign tables.
This commit introduces new foreign data wrapper API for TRUNCATE.
It extends TRUNCATE command so that it accepts foreign tables as
the targets to truncate and invokes that API. Also it extends postgres_fdw
so that it can issue TRUNCATE command to foreign servers, by adding
new routine for that TRUNCATE API.

The information about options specified in TRUNCATE command, e.g.,
ONLY, CACADE, etc is passed to FDW via API. The list of foreign tables to
truncate is also passed to FDW. FDW truncates the foreign data sources
that the passed foreign tables specify, based on those information.
For example, postgres_fdw constructs TRUNCATE command using them
and issues it to the foreign server.

For performance, TRUNCATE command invokes the FDW routine for
TRUNCATE once per foreign server that foreign tables to truncate belong to.

Author: Kazutaka Onishi, Kohei KaiGai, slightly modified by Fujii Masao
Reviewed-by: Bharath Rupireddy, Michael Paquier, Zhihong Yu, Alvaro Herrera, Stephen Frost, Ashutosh Bapat, Amit Langote, Daniel Gustafsson, Ibrar Ahmed, Fujii Masao
Discussion: https://postgr.es/m/CAOP8fzb_gkReLput7OvOK+8NHgw-RKqNv59vem7=524krQTcWA@mail.gmail.com
Discussion: https://postgr.es/m/CAJuF6cMWDDqU-vn_knZgma+2GMaout68YUgn1uyDnexRhqqM5Q@mail.gmail.com
2021-04-08 20:56:08 +09:00