When a snapshot file fails to be read in ImportSnapshot(), it would
issue an ERROR as "invalid snapshot identifier" when opening a stream
for it in read-only mode. The error handling is improved to be more
talkative in failure cases:
- If a snapshot identifier uses incorrect characters, complain with the
same error as before this commit.
- If the snapshot file cannot be found in pg_snapshots/, complain with a
"snapshot \"foo\" does not exist" instead. This maps to the case where
AllocateFile() fails on ENOENT. Based on a suggestion from Andres
Freund.
- If AllocateFile() throws something else than ENOENT as errno, report
it with more details in %m instead, as these failures are never
expected.
b29504eeb489 was the first improvement take. The older error message
exists since bb446b689b that introduced snapshot imports. Two test
cases are added to cover the cases of an identifier with an incorrect
format and of a missing snapshot.
Author: Bharath Rupireddy
Reviewed-by: Andres Freund, Daniel Gustafsson, Michael Paquier
Discussion: https://postgr.es/m/CALj2ACWmr=3KdxDkm8h7Zn1XxBoF6hdzq8WQyMn2y1OL5RYFrg@mail.gmail.com
PLy_elog() was not able to handle correctly cases where a SPI called
failed, which would fill in a DETAIL string able to trigger an
assertion. We may want to improve this infrastructure so as it is able
to provide any extra detail information provided by an error stack, but
this is left as a future improvement as it could impact existing error
stacks and any applications that depend on them. For now, the assertion
is removed and a regression test is added to cover the case of a failure
with a detail string.
This problem exists since 2bd78eb8d5, so backpatch all the way down
with tweaks to the regression tests output added where required.
Author: Alexander Lakhin
Discussion: https://postgr.es/m/18070-ab9c171cbf4ebb0f@postgresql.org
Backpatch-through: 11
This commit introduces binaryheap_remove_node(), which can be used
to remove any node from a binary heap. The implementation is
straightforward. The target node is replaced with the last node in
the heap, and then we sift as needed to preserve the heap property.
This new function is intended for use in a follow-up commit that
will improve the performance of pg_restore.
Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/3612876.1689443232%40sss.pgh.pa.us
There are a couple of places in frontend code that could make use
of this simple binary heap implementation. This commit makes
binaryheap usable in frontend code, much like commit 26aaf97b68 did
for StringInfo. Like StringInfo, the header file is left in lib/
to reduce the likelihood of unnecessary breakage.
The frontend version of binaryheap exposes a void *-based API since
frontend code does not have access to the Datum definitions. This
seemed like a better approach than switching all existing uses to
void * or making the Datum definitions available to frontend code.
Reviewed-by: Tom Lane, Alvaro Herrera
Discussion: https://postgr.es/m/3612876.1689443232%40sss.pgh.pa.us
cursor_to_xmlschema() assumed that any Portal must have a tupDesc,
which is not so. Add a defensive check.
It's plausible that this mistake occurred because of the rather
poorly chosen name of the lookup function SPI_cursor_find(),
which in such cases is returning something that isn't very much
like a cursor. Add some documentation to try to forestall future
errors of the same ilk.
Report and patch by Boyu Yang (docs changes by me). Back-patch
to all supported branches.
Discussion: https://postgr.es/m/dd343010-c637-434c-a8cb-418f53bda3b8.yangboyu.yby@alibaba-inc.com
It was reported as misaligned by Kyotaro, but it also needed to be
turned into a single translatable phrase (like the one for \g is), as
reported by Yugo.
This is a new issue (commit f347ec76e2), so no backpatch is needed.
Author: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Author: Yugo NAGATA <nagata@sraoss.co.jp>
Discussion: https://postgr.es/m/20230907.142956.2038600444404289870.horikyota.ntt@gmail.com
The documentation is pretty light on how to set column options
on foreign tables, and the file_fdw docs refer to COPY when
documenting force_null even though it's not used in the same
way. Add a small example to describe how to use it.
Reported-by: Boshomi Phenix <boshomi@gmail.com>
Discussion: https://postgr.es/m/CAJVkCUparn4_Oarernm=U6LWVsTkecKcALHtwGr5M3qJRj_czw@mail.gmail.com
Between Unicode 15.0.0 and 15.1.0, the whitespace in
EastAsianWidth.txt has changed a bit, such as from
0020;Na # Zs SPACE
to
0020 ; Na # Zs SPACE
with space around the semicolon. Adjust the script to be able to
parse that.
expandRecordVariable() failed to adjust the parse nesting structure
correctly when recursing to inspect an outer-level Var. This could
result in assertion failures or core dumps in corner cases.
Likewise, get_name_for_var_field() failed to adjust the deparse
namespace stack correctly when recursing to inspect an outer-level
Var. In this case the likely result was a "bogus varno" error
while deparsing a view.
Per bug #18077 from Jingzhou Fu. Back-patch to all supported
branches.
Richard Guo, with some adjustments by me
Discussion: https://postgr.es/m/18077-b9db97c6e0ab45d8@postgresql.org
When tracking IO timing for WAL, the duration is what we calculate
based on the start and end timestamps, it's not what the variable
contains. Rename the timestamp variable to end to better communicate
what it contains. Original patch by Krishnakumar with additional
hacking to fix another occurrence by me.
Author: Krishnakumar R <kksrcv001@gmail.com>
Discussion: https://postgr.es/m/CAPMWgZ9f9o8awrQpjo8oxnNQ=bMDVPx00NE0QcDzvHD_ZrdLPw@mail.gmail.com
This became safe after commit 4b4798e138. The smgrcreate() call will
now register the segment for syncing at the next checkpoint, so we
don't need to sync it here. If a checkpoint happens before the
creation is WAL-logged, the records will be replayed when starting
recovery from the checkpoint. If a checkpoint happens after the WAL
logging, the checkpoint will fsync() it.
In the passing, clarify a comment in smgrDoPendingSyncs().
Discussion: https://www.postgresql.org/message-id/6e5bbc08-cdfc-b2b3-9e23-1a914b9850a9%40iki.fi
Reviewed-by: Robert Haas
The majority of all filenames are quoted in user facing error and
log messages, but a few were still printed without quotes. While
these filenames do not risk causing any ambiguity as their format
is strict, quote them anyways to be consistent across all logs.
Also concatenate a message to keep it one line to make it easier
to grep for in the code.
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/080EEABE-6645-4A46-AB20-6285ADAC44FE@yesql.se
This reverts commit a0d87bcd9b, following a remark from Andres Frend
that the new error can be triggered with an incorrect SET TRANSACTION
SNAPSHOT command without being really helpful for the user as it uses
the internal file name.
Discussion: https://postgr.es/m/20230914020724.hlks7vunitvtbbz4@awork3.anarazel.de
Backpatch-through: 11
It's entirely possible for a logical slot to have a confirmed_flush LSN
higher than the last value saved on disk while not being marked as dirty.
Currently, it is not a major problem but a later patch adding support for
the upgrade of slots relies on that value being properly flushed to disk.
It can also help avoid processing the same transactions again in some
boundary cases after the clean shutdown and restart. Say, we process
some transactions for which we didn't send anything downstream (the
changes got filtered) but the confirm_flush LSN is updated due to
keepalives. As we don't flush the latest value of confirm_flush LSN, it
may lead to processing the same changes again without this patch.
The approach taken by this patch has been suggested by Ashutosh Bapat.
Author: Vignesh C, Julien Rouhaud, Kuroda Hayato
Reviewed-by: Amit Kapila, Dilip Kumar, Michael Paquier, Ashutosh Bapat, Peter Smith, Hou Zhijie
Discussion: http://postgr.es/m/CAA4eK1JzJagMmb_E8D4au=GYQkxox0AfNBm1FbP7sy7t4YWXPQ@mail.gmail.com
Discussion: http://postgr.es/m/TYAPR01MB58664C81887B3AF2EB6B16E3F5939@TYAPR01MB5866.jpnprd01.prod.outlook.com
Karina figured out that I (Andres) confused BufferUsage.temp_blks_written with
BufferUsage.local_blks_written in fcdda1e4b5.
Tests in core PG can't easily test this, as BufferUsage is just used for
EXPLAIN (ANALYZE, BUFFERS) and pg_stat_statements. Thus this commit adds tests
for this to pg_stat_statements.
Reported-by: Karina Litskevich <litskevichkarina@gmail.com>
Author: Karina Litskevich <litskevichkarina@gmail.com>
Author: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CACiT8ibxXA6+0amGikbeFhm8B84XdQVo6D0Qfd1pQ1s8zpsnxQ@mail.gmail.com
Backpatch: 16-, where fcdda1e4b5 was merged
When a snapshot file fails to be read in ImportSnapshot(), it would
issue an ERROR as "invalid snapshot identifier" when opening a stream
for it in read-only mode. This error message is reworded to be the same
as all the other messages used in this case on failure, which is useful
when debugging this area.
Thinko introduced by bb446b689b where snapshot imports have been
added. A backpatch down to 11 is done as this can improve any work
related to snapshot imports in older branches.
Author: Bharath Rupireddy
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/CALj2ACWmr=3KdxDkm8h7Zn1XxBoF6hdzq8WQyMn2y1OL5RYFrg@mail.gmail.com
Backpatch-through: 11
These code paths should not be reached normally, but if they are an
error with "(null)" as information for the collation provider would show
up if no locale is set, while we can assume that we are referring to
libc.
This refactors the code so as the provider is always reported even if no
locale is set. The name of the function where the error happens is
added, while on it, as it can be helpful for debugging.
Issue introduced by d87d548cd0, so backpatch down to 16.
Author: Michael Paquier, Ranier Vilela
Reviewed-by: Jeff Davis, Kyotaro Horiguchi
Discussion: https://postgr.es/m/7073610042fcf97e1bea2ce08b7e0214b5e11094.camel@j-davis.com
Backpatch-through: 16
Both 50e17ad28 and 29f45e299 mistakenly tried to record a plan dependency
on a function but mistakenly inverted the OidIsValid test. This meant
that we'd record a dependency only when the function's Oid was
InvalidOid. Clearly this was meant to *not* record the dependency in
that case.
50e17ad28 made this mistake first, then in v15 29f45e299 copied the same
mistake.
Reported-by: Tom Lane
Backpatch-through: 14, where 50e17ad28 first made this mistake
Discussion: https://postgr.es/m/2277537.1694301772@sss.pgh.pa.us
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
Previously, the test relied on a trick with a shell to retrieve the PID
of the psql session to be stopped with SIGINT, that was skipped on
Windows. This commit changes the test to use IPC::Run::signal()
instead, which still does not work on Windows, but for a different
reason: SIGINT would stop the test before finishing.
This should allow the test to run on non-Windows platforms where PPID is
not supported (like NetBSD), spreading it a bit more across the
buildfarm. And the logic of the test is simpler.
It is the first time in the tree that IPC::Run::signal() is used, so, as
a matter of safety (or just call that as me having cold feet), no
backpatch is done, at least for now.
Author: Yugo NAGATA
Reviewed-by: Fabien Coelho
Discussion: https://postgr.es/m/20230810125935.22c2922ea5250ba79358965b@sraoss.co.jp
This changes 020_cancel.pl so as the test is entirely skipped on
Windows. This test was already doing nothing under WIN32, except
initializing and starting a node without using it so this shaves a few
test cycles.
Author: Yugo NAGATA
Reviewed-by: Fabien Coelho
Discussion: https://postgr.es/m/20230810125935.22c2922ea5250ba79358965b@sraoss.co.jp
Backpatch-through: 15
The new test added by commit 68a59f9e9 disables the subscription and
manually drops the associated replication slot. However, since
disabling the subsubscription doesn't wait for a walsender to release
the replication slot and exit, pg_drop_replication_slot() could
fail. Avoid failure by adding a wait for the replication slot to
become inactive.
Reported-by: Hou Zhijie, as per buildfarm
Reviewed-by: Hou Zhijie
Discussion: https://postgr.es/m/OS0PR01MB571682316378379AA34854F694E9A%40OS0PR01MB5716.jpnprd01.prod.outlook.com
Backpatch-through: 15
generation_counter includes time spent on both JIT:ing expressions
and tuple deforming which are configured independently via options
jit_expressions and jit_tuple_deforming. As they are combined in
the same counter it's not apparent what fraction of time the tuple
deforming takes.
This adds deform_counter dedicated to tuple deforming, which allows
seeing more directly the influence jit_tuple_deforming is having on
the query. The counter is exposed in EXPLAIN and pg_stat_statements
bumpin pg_stat_statements to 1.11.
Author: Dmitry Dolgov <9erthalion6@gmail.com>
Reviewed-by: Pavel Stehule <pavel.stehule@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/20220612091253.eegstkufdsu4kfls@erthalion.local
Extend the PG_TEST_EXTRA documentation to mention resource intensive
tests as well. The previous wording only mentioned special software
and security in the main paragraph, with resource usage listed on one
of the tests in the list.
Backpatch to v15 where f47ed79cc8 added wal_consistenct_checking as
a PG_TEST_EXTRA target.
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Discussion: https://postgr.es/m/CAN55FZ0OthTuBdiNkaX2BvxuHdK4Y1MVEb8_uEuD1yHMPmT9Og@mail.gmail.com
Backpatch-through: 15
The WAIT_USE_WIN32 implementation of WaitEventSetWait() previously
reported at most one event per call, because that's what the underlying
WaitForMultipleObjects() call does.
We can make the behavior match the three Unix implementations by looping
until our output buffer is full, or there are no more events available
now. This makes no difference to most callers including the regular
FEBE socket code, since they ask for at most one event anyway. A
difference in socket accept priority might be perceived by end users
after commit 7389aad6 started using WaitEventSet in the postmaster.
With this commit, the accept order now matches Unix systems, servicing
listening sockets in round-robin order.
We decided it wasn't really a bug or worth back-patching, but it seems
good to align the behavior across platforms.
Reviewed-by: Andres Freund <andres@anarazel.de> (earlier version)
Tested-by: "Wei Wang (Fujitsu)" <wangw.fnst@fujitsu.com>
Discussion: https://postgr.es/m/CA%2BhUKG%2BA2dk29hr5zRP3HVJQ-_PncNJM6HVQ7aaYLXLRBZU-xw%40mail.gmail.com
Now that ATExecDropConstraint doesn't recurse anymore, so it's wrong to
test privileges "during recursion" there. Move the check to
dropconstraint_internal, which is the place where recursion occurs.
In passing, remove now-useless 'recursing' argument to
ATExecDropConstraint.
Discussion: https://postgr.es/m/202309051744.y4mndw5gwzhh@alvherre.pgsql
Now that we have catalogued not-null constraints, our information_schema
definition can be updated to grab those rather than fabricate synthetic
definitions.
Note that we still don't have catalog rows for not-null constraints on
domains, but we've never had not-null constraints listed in
information_schema, so that's a problem to be solved separately.
Co-authored-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Co-authored-by: Álvaro Herrera <alvherre@alvh.no-ip.org>
Discussion: https://postgr.es/m/81b461c4-edab-5d8c-2f88-203108425340@enterprisedb.com
Discussion: https://postgr.es/m/202309041710.psytrxlsiqex@alvherre.pgsql
pgbouncer can cause PQbackendPID() to return negative values due to it
filling be_pid with random bytes (even these days pid_max can only be
set up to 2^22 on 64b machines on Linux, for example, so this cannot
happen with normal PID numbers). When this happens, pg_basebackup may
generate a temporary slot name that may not be accepted by the parser,
leading to spurious failures, like:
pg_basebackup: error: could not send replication command
ERROR: replication slot name "pg_basebackup_-1201966863" contains
invalid character
This commit fixes that problem by formatting the result from
PQbackendPID() as an unsigned integer when creating the temporary
replication slot name, so as the invalid character is gone and the
command can be parsed.
Author: Jelte Fennema
Reviewed-by: Daniel Gustafsson, Nishant Sharma
Discussion: https://postgr.es/m/CAGECzQQOGvYfp8ziF4fWQ_o8s2K7ppaoWBQnTmdakn3s-4Z=5g@mail.gmail.com
Backpatch-through: 11
Where the test wants a VACUUM command to generate WAL that would
conflict with a session on the standby, it could transiently fail to do
so if it couldn't acquire a cleanup lock conditionally at that moment on
the primary. VACUUM FREEZE will wait, so use that instead.
No back-patch for now, but that will be needed if/when the test is
re-enabled in back-branches.
Suggested-by: Andres Freund <andres@anarazel.de>
Reported-by: Christoph Berg <myon@debian.org>
Discussion: https://postgr.es/m/20230812210006.ei7tutzwcr5svyt6%40awork3.anarazel.de
We shouldn't be doing non-trivial work in signal handlers in general,
and in this case the handler could reach unsafe code and corrupt state.
It also clobbered its own "reason" code.
Move all recovery conflict decision logic into the next
CHECK_FOR_INTERRUPTS(), and have the signal handler just set flags and
the latch, following the standard pattern. Since there are several
different "reasons", use a separate flag for each.
With this refactoring, the recovery conflict system no longer
piggy-backs on top of the regular query cancelation mechanism, but
instead raises an error directly if it decides that is necessary. It
still needs to respect QueryCancelHoldoffCount, because otherwise the
FEBE protocol might get out of sync (see commit 2b3a8b20c2).
This fixes one class of intermittent failure in the new
031_recovery_conflict.pl test added by commit 9f8a050f, though the buggy
coding is much older. Failures outside contrived testing seem to be
very rare (or perhaps incorrectly attributed) in the field, based on
lack of reports.
No back-patch for now due to complexity and release schedule. We have
the option to back-patch into 16 later, as 16 has prerequisite commit
bea3d7e.
Reviewed-by: Andres Freund <andres@anarazel.de> (earlier version)
Reviewed-by: Michael Paquier <michael@paquier.xyz> (earlier version)
Reviewed-by: Robert Haas <robertmhaas@gmail.com> (earlier version)
Tested-by: Christoph Berg <myon@debian.org>
Discussion: https://postgr.es/m/CA%2BhUKGK3PGKwcKqzoosamn36YW-fsuTdOPPF1i_rtEO%3DnEYKSg%40mail.gmail.com
Discussion: https://postgr.es/m/CALj2ACVr8au2J_9D88UfRCi0JdWhyQDDxAcSVav0B0irx9nXEg%40mail.gmail.com
This commit allows specifying a --sync-method in several frontend
utilities that must synchronize many files to disk (initdb,
pg_basebackup, pg_checksums, pg_dump, pg_rewind, and pg_upgrade).
On Linux, users can specify "syncfs" to synchronize the relevant
file systems instead of calling fsync() for every single file. In
many cases, using syncfs() is much faster.
As with recovery_init_sync_method, this new option comes with some
caveats. The descriptions of these caveats have been moved to a
new appendix section in the documentation.
Co-authored-by: Justin Pryzby
Reviewed-by: Michael Paquier, Thomas Munro, Robert Haas, Justin Pryzby
Discussion: https://postgr.es/m/20210930004340.GM831%40telsasoft.com
This commit adds support for using syncfs() in fsync_pgdata() and
fsync_dir_recurse() (which have been renamed to sync_pgdata() and
sync_dir_recurse()). Like recovery_init_sync_method,
sync_pgdata() calls syncfs() for the data directory, each
tablespace, and pg_wal (if it is a symlink). For now, all of the
frontend utilities that use these support functions are hard-coded
to use fsync(), but a follow-up commit will allow specifying
syncfs().
Co-authored-by: Justin Pryzby
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/20210930004340.GM831%40telsasoft.com
This commit renames RecoveryInitSyncMethod to DataDirSyncMethod and
moves it to common/file_utils.h. This is preparatory work for a
follow-up commit that will allow specifying the synchronization
method in frontend utilities such as pg_upgrade and pg_basebackup.
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/ZN2ZB4afQ2JbR9TA%40paquier.xyz
Heikki Linnakangas
Peter Eisentraut
Michael Paquier
Nathan Bossart
Tom Lane
Alvaro Herrera
Daniel Gustafsson
Amit Kapila
Andres Freund
David Rowley
Thomas Munro
Bruce Momjian
Masahiko Sawada
Robert Haas