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We don't allow inheritance parents as partitions, and have checks to
prevent this; but if a table _was_ in the past an inheritance parents
and all their children are removed, the pg_class.relhassubclass flag
may remain set, which confuses the partition pruning code (most
obviously, it results in an assertion failure; in production builds it
may be worse.)
Fix by resetting relhassubclass on attach.
Backpatch to all supported versions.
Reported-by: Alexander Lakhin <exclusion@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/18550-d5e047e9a897a889@postgresql.org
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Previously, TidStoreIterateNext() would expand the set of offsets for
each block into an internal buffer that it overwrote each time. In
order to be able to collect the offsets for multiple blocks before
working with them, change the contract. Now, the offsets are obtained
by a separate call to TidStoreGetBlockOffsets(), which can be called at
a later time. TidStoreIteratorResult objects are safe to copy and store
in a queue.
Reviewed-by: Noah Misch <noah@leadboat.com>
Discussion: https://postgr.es/m/CAAKRu_bbkmwAzSBgnezancgJeXrQZXy4G4kBTd+5=cr86H5yew@mail.gmail.com
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The two_phase option is controlled by both the publisher (as a slot
option) and the subscriber (as a subscription option), so the slot option
must also be modified.
Changing the 'two_phase' option for a subscription from 'true' to 'false'
is permitted only when there are no pending prepared transactions
corresponding to that subscription. Otherwise, the changes of already
prepared transactions can be replicated again along with their corresponding
commit leading to duplicate data or errors.
To avoid data loss, the 'two_phase' option for a subscription can only be
changed from 'false' to 'true' once the initial data synchronization is
completed. Therefore this is performed later by the logical replication worker.
Author: Hayato Kuroda, Ajin Cherian, Amit Kapila
Reviewed-by: Peter Smith, Hou Zhijie, Amit Kapila, Vitaly Davydov, Vignesh C
Discussion: https://postgr.es/m/8fab8-65d74c80-1-2f28e880@39088166
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Add extern declarations in appropriate header files for global
variables related to GUC. In many cases, this was handled quite
inconsistently before, with some GUC variables declared in a header
file and some only pulled in via ad-hoc extern declarations in various
.c files.
Also add PGDLLIMPORT qualifications to those variables. These were
previously missing because src/tools/mark_pgdllimport.pl has only been
used with header files.
This also fixes -Wmissing-variable-declarations warnings for GUC
variables (not yet part of the standard warning options).
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/e0a62134-83da-4ba4-8cdb-ceb0111c95ce@eisentraut.org
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When provided an empty initial array, array_set_slice() fails to
check for overflow when computing the new array's dimensions.
While such overflows are ordinarily caught by ArrayGetNItems(),
commands with the following form are accepted:
INSERT INTO t (i[-2147483648:2147483647]) VALUES ('{}');
To fix, perform the hazardous computations using overflow-detecting
arithmetic routines. As with commit 18b585155a, the added test
cases generate errors that include a platform-dependent value, so
we again use psql's VERBOSITY parameter to suppress printing the
message text.
Reported-by: Alexander Lakhin
Author: Joseph Koshakow
Reviewed-by: Jian He
Discussion: https://postgr.es/m/31ad2cd1-db94-bdb3-f91a-65ffdb4bef95%40gmail.com
Backpatch-through: 12
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This fixes warnings from -Wmissing-variable-declarations (not yet part
of the standard warning options) under EXEC_BACKEND. The
NON_EXEC_STATIC variables need a suitable declaration in a header file
under EXEC_BACKEND.
Also fix the inconsistent application of the volatile qualifier for
PMSignalState, which was revealed by this change.
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/e0a62134-83da-4ba4-8cdb-ceb0111c95ce@eisentraut.org
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Commit 8720a15e9ab121e49174d889eaeafae8ac89de7b added the wrong name.
Nazir Bilal Yavuz
Discussion: https://postgr.es/m/20240720181405.5a.nmisch@google.com
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clog.c, async.c and predicate.c included some SLRU page numbers still
handled as 4-byte integers, while int64 should be used for this purpose.
These holes have been introduced in 4ed8f0913bfd, that has introduced
the use of 8-byte integers for SLRU page numbers, still forgot about the
code paths updated by this commit.
Reported-by: Noah Misch
Author: Aleksander Alekseev, Michael Paquier
Discussion: https://postgr.es/m/20240626002747.dc.nmisch@google.com
Backpatch-through: 17
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The docs currently imply that ldapurl is for search+bind only, but
that's not true. Rearrange the docs to cover this better.
Add a test ldapurl with simple bind. This was previously allowed but
unexercised, and now that it's documented it'd be good to pin the
behavior.
Improve error when mixing LDAP bind modes. The option names had gone
stale; replace them with a more general statement.
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/flat/CAOYmi+nyg9gE0LeP=xQ3AgyQGR=5ZZMkVVbWd0uR8XQmg_dd5Q@mail.gmail.com
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bootstrap_data_checksum_version can just as easily be passed to where
it is used via function arguments.
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://www.postgresql.org/message-id/flat/e0a62134-83da-4ba4-8cdb-ceb0111c95ce@eisentraut.org
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slru.h described incorrectly how SLRU segment names are formatted
depending on the segment number and if long or short segment names are
used. This commit closes the gap with a better description, fitting
with the reality.
Reported-by: Noah Misch
Author: Aleksander Alekseev
Discussion: https://postgr.es/m/20240626002747.dc.nmisch@google.com
Backpatch-through: 17
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for thread-safety in the server in the future
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: David Steele <david@pgmasters.net>
Discussion: https://www.postgresql.org/message-id/flat/79692bf9-17d3-41e6-b9c9-fc8c3944222a@eisentraut.org
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They spell it "strtok_s" there.
There are currently no uses, but some will be added soon.
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: David Steele <david@pgmasters.net>
Discussion: https://www.postgresql.org/message-id/flat/79692bf9-17d3-41e6-b9c9-fc8c3944222a@eisentraut.org
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In create_gather_merge_path, we should always guarantee that the
subpath is adequately ordered, and we do not add a Sort node in
createplan.c for a Gather Merge node. Therefore, the 'else' branch in
create_gather_merge_path, which computes the cost for a Sort node, is
redundant.
This patch removes the redundant code and emits an error if the
subpath is not sufficiently ordered. Meanwhile, this patch changes
the check for the subpath's pathkeys in create_gather_merge_plan to an
Assert.
Author: Richard Guo
Discussion: https://postgr.es/m/CAMbWs48u=0bWf3epVtULjJ-=M9Hbkz+ieZQAOS=BfbXZFqbDCg@mail.gmail.com
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In the case of a parallel plan, when computing the number of tuples
processed per worker, we divide the total number of tuples by the
parallel_divisor obtained from get_parallel_divisor(), which accounts
for the leader's contribution in addition to the number of workers.
Accordingly, when estimating the number of tuples for gather (merge)
nodes, we should multiply the number of tuples per worker by the same
parallel_divisor to reverse the division. However, currently we use
parallel_workers rather than parallel_divisor for the multiplication.
This could result in an underestimation of the number of tuples for
gather (merge) nodes, especially when there are fewer than four
workers.
This patch fixes this issue by using the same parallel_divisor for the
multiplication. There is one ensuing plan change in the regression
tests, but it looks reasonable and does not compromise its original
purpose of testing parallel-aware hash join.
In passing, this patch removes an unnecessary assignment for path.rows
in create_gather_merge_path, and fixes an uninitialized-variable issue
in generate_useful_gather_paths.
No backpatch as this could result in plan changes.
Author: Anthonin Bonnefoy
Reviewed-by: Rafia Sabih, Richard Guo
Discussion: https://postgr.es/m/CAO6_Xqr9+51NxgO=XospEkUeAg-p=EjAWmtpdcZwjRgGKJ53iA@mail.gmail.com
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We were not being clear about which variants of the "direction"
clause are permitted in MOVE. Also, the text seemed to be
written with only the FETCH/MOVE NEXT case in mind, so it
didn't apply very well to other variants.
Also, document that "MOVE count IN cursor" only works if count
is a constant. This is not the whole truth, because some other
cases such as a parenthesized expression will also work, but
we want to push people to use "MOVE FORWARD count" instead.
The constant case is enough to cover what we allow in plain SQL,
and that seems sufficient to claim support for.
Update a comment in pl_gram.y claiming that we don't document
that point.
Per gripe from Philipp Salvisberg.
Discussion: https://postgr.es/m/172155553388.702.7932496598218792085@wrigleys.postgresql.org
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This reverts commit aa607980aee08416211f003ab41aa750f5559712.
This test proved to be unstable on the buildfarm, timing out before the
standby could catch up on 32-bit machines where more rows were required
and failing to reliably trigger multiple index vacuum rounds on 64-bit
machines where fewer rows should be required.
Because the instability is only known to be present on versions of
Postgres with TIDStore used for dead TID storage by vacuum, this is only
being reverted on master and REL_17_STABLE.
As having this coverage may be valuable, there is a discussion on the
thread of possible ways to stabilize the test. If that happens, a fixed
test can be committed again.
Backpatch-through: 17
Reported-by: Tom Lane
Discussion: https://postgr.es/m/614152.1721580711%40sss.pgh.pa.us
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As per Coverity and Tom Lane, commit 402b586d0 (back-patched to v17
as 2b5819e2b) forgot to initialize this new structure member in this
code path.
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Previously, the code charged disable_cost for CurrentOfExpr, and then
subtracted disable_cost from the cost of a TID path that used
CurrentOfExpr as the TID qual, effectively disabling all paths except
that one. Now, we instead suppress generation of the disabled paths
entirely, and generate only the one that the executor will actually
understand.
With this approach, we do not need to rely on disable_cost being
large enough to prevent the wrong path from being chosen, and we
save some CPU cycle by avoiding generating paths that we can't
actually use. In my opinion, the code is also easier to understand
like this.
Patch by me. Review by Heikki Linnakangas.
Discussion: http://postgr.es/m/591b3596-2ea0-4b8e-99c6-fad0ef2801f5@iki.fi
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After calling ConditionVariableSleep() or ConditionVariableTimedSleep()
one or more times, code is supposed to call ConditionVariableCancelSleep()
to remove itself from the waitlist. This code neglected to do so.
As far as I know, that had no observable consequences, but let's make
the code correct.
Discussion: http://postgr.es/m/CA+TgmoYW8eR+KN6zhVH0sin7QH6AvENqw_bkN-bB4yLYKAnsew@mail.gmail.com
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strtok() considers adjacent delimiters to be one delimiter, which is
arguably the wrong behavior in some cases. Replace with strsep(),
which has the right behavior: Adjacent delimiters create an empty
token.
Affected by this are parsing of:
- Stored SCRAM secrets
("SCRAM-SHA-256$<iterations>:<salt>$<storedkey>:<serverkey>")
- ICU collation attributes
("und@colStrength=primary;colCaseLevel=yes") for ICU older than
version 54
- PG_COLORS environment variable
("error=01;31:warning=01;35:note=01;36:locus=01")
- pg_regress command-line options with comma-separated list arguments
(--dbname, --create-role) (currently only used pg_regress_ecpg)
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: David Steele <david@pgmasters.net>
Discussion: https://www.postgresql.org/message-id/flat/79692bf9-17d3-41e6-b9c9-fc8c3944222a@eisentraut.org
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from OpenBSD, similar to strlcat, strlcpy
There are currently no uses, but some will be added soon.
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reviewed-by: David Steele <david@pgmasters.net>
Discussion: https://www.postgresql.org/message-id/flat/79692bf9-17d3-41e6-b9c9-fc8c3944222a@eisentraut.org
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One test case added in 22d946b0f verifies the plan of a non-parallel
nestloop join. The planner's choice of join order is arbitrary, and
slight variations in underlying statistics could result in a different
displayed plan. To stabilize the test result, here we enforce the
join order using a lateral join.
While here, modify the test case to verify that parallel nestloop join
is not generated if the inner path is not parallel-safe, which is what
we wanted to test in 22d946b0f.
Reported-by: Alexander Lakhin as per buildfarm
Author: Richard Guo
Discussion: https://postgr.es/m/7c09a439-e48d-5460-cfa0-a371b1a57066@gmail.com
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This new error code, named file_name_too_long, maps internally to the
errno ENAMETOOLONG to produce a proper error code rather than an
internal code under errcode_for_file_access(). This error code can be
reached with some SQL command patterns, like a snapshot file name.
Reported-by: Alexander Lakhin
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/Zo4ROR9mgy8bowMo@paquier.xyz
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If a view has some updatable and some non-updatable columns, we failed
to verify updatability of any columns for which an INSERT or UPDATE
on the view explicitly specifies a DEFAULT item (unless the view has
a declared default for that column, which is rare anyway, and one
would almost certainly not write one for a non-updatable column).
This would lead to an unexpected "attribute number N not found in
view targetlist" error rather than the intended error.
Per bug #18546 from Alexander Lakhin. This bug is old, so back-patch
to all supported branches.
Discussion: https://postgr.es/m/18546-84a292e759a9361d@postgresql.org
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While this doesn't significantly change runtime now, it arranges for
STRATEGY=WAL_LOG to benefit automatically from future optimizations to
the read_stream subsystem. For large tables in the template database,
this does read 16x as many bytes per system call. Platforms with high
per-call overhead, if any, may see an immediate benefit.
Nazir Bilal Yavuz
Discussion: https://postgr.es/m/CAN55FZ0JKL6vk1xQp6rfOXiNFV1u1H0tJDPPGHWoiO3ea2Wc=A@mail.gmail.com
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Currently read stream object can be created only by using Relation.
Nazir Bilal Yavuz
Discussion: https://postgr.es/m/CAN55FZ0JKL6vk1xQp6rfOXiNFV1u1H0tJDPPGHWoiO3ea2Wc=A@mail.gmail.com
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There are checks in PinBufferForBlock() function to set persistence of
the relation. This function is called for each block in the relation.
Instead, set persistence of the relation before PinBufferForBlock().
Nazir Bilal Yavuz
Discussion: https://postgr.es/m/CAN55FZ0JKL6vk1xQp6rfOXiNFV1u1H0tJDPPGHWoiO3ea2Wc=A@mail.gmail.com
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Reaching that code would have required multiple processes performing
relation extension during recovery, which does not happen. That caller
has the persistence available, so pass it. This was dead code as soon
as commit 210622c60e1a9db2e2730140b8106ab57d259d15 added it.
Discussion: https://postgr.es/m/CAN55FZ0JKL6vk1xQp6rfOXiNFV1u1H0tJDPPGHWoiO3ea2Wc=A@mail.gmail.com
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None of the arithmetic functions for the the money type handle
overflow. This commit introduces several helper functions with
overflow checking and makes use of them in the money type's
arithmetic functions.
Fixes bug #18240.
Reported-by: Alexander Lakhin
Author: Joseph Koshakow
Discussion: https://postgr.es/m/18240-c5da758d7dc1ecf0%40postgresql.org
Discussion: https://postgr.es/m/CAAvxfHdBPOyEGS7s%2Bxf4iaW0-cgiq25jpYdWBqQqvLtLe_t6tw%40mail.gmail.com
Backpatch-through: 12
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If vacuum fails to prune a tuple killed before OldestXmin, it will
decide to freeze its xmax and later error out in pre-freeze checks.
Add a test reproducing this scenario to the recovery suite which creates
a table on a primary, updates the table to generate dead tuples for
vacuum, and then, during the vacuum, uses a replica to force
GlobalVisState->maybe_needed on the primary to move backwards and
precede the value of OldestXmin set at the beginning of vacuuming the
table.
This commit is separate from the fix in case there are test stability
issues.
Author: Melanie Plageman
Reviewed-by: Peter Geoghegan
Discussion: https://postgr.es/m/CAAKRu_apNU2MPBK96V%2BbXjTq0RiZ-%3DA4ZTaysakpx9jxbq1dbQ%40mail.gmail.com
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If vacuum fails to remove a tuple with xmax older than
VacuumCutoffs->OldestXmin and younger than GlobalVisState->maybe_needed,
it may attempt to freeze the tuple's xmax and then ERROR out in
pre-freeze checks with "cannot freeze committed xmax".
Fix this by having vacuum always remove tuples older than OldestXmin.
It is possible for GlobalVisState->maybe_needed to precede OldestXmin if
maybe_needed is forced to go backward while vacuum is running. This can
happen if a disconnected standby with a running transaction older than
VacuumCutoffs->OldestXmin reconnects to the primary after vacuum
initially calculates GlobalVisState and OldestXmin.
In back branches starting with 14, the first version using
GlobalVisState, failing to remove tuples older than OldestXmin during
pruning caused vacuum to infinitely loop in lazy_scan_prune(), as
investigated on this [1] thread. After 1ccc1e05ae removed the retry loop
in lazy_scan_prune() and stopped comparing tuples to OldestXmin, the
hang could no longer happen, but we could still attempt to freeze dead
tuples with xmax older than OldestXmin -- resulting in an ERROR.
Fix this by always removing dead tuples with xmax older than
VacuumCutoffs->OldestXmin. This is okay because the standby won't replay
the tuple removal until the tuple is removable. Thus, the worst that can
happen is a recovery conflict.
[1] https://postgr.es/m/20240415173913.4zyyrwaftujxthf2%40awork3.anarazel.de#1b216b7768b5bd577a3d3d51bd5aadee
Back-patch through 14
Author: Melanie Plageman
Reviewed-by: Peter Geoghegan, Robert Haas, Andres Freund, Heikki Linnakangas, and Noah Misch
Discussion: https://postgr.es/m/CAAKRu_bDD7oq9ZwB2OJqub5BovMG6UjEYsoK2LVttadjEqyRGg%40mail.gmail.com
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Only the LLVM specific code uses it since resource owners were made
extensible in commit b8bff07daa85c837a2747b4d35cd5a27e73fb7b2. This is
new in v17, so backpatch there to keep the branches from diverging
just yet.
Author: Andreas Karlsson <andreas@proxel.se>
Discussion: https://www.postgresql.org/message-id/fd3a2a00-6605-4e30-a118-48418b478e6e@proxel.se
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There was no coverage for the code path to unwrap an array before
applying ".*" to it, so add tests to provide more coverage for both
objects and arrays.
This shows, for example, that no results are returned for an array of
scalars, and what results are returned when the array contains an
object. A few more scenarios are covered with the strict/lax modes and
the operator "@?".
Author: David Wheeler
Reported-by: David G. Johnston, Stepan Neretin
Discussion: https://postgr.es/m/A95346F9-6147-46E0-809E-532A485D71D6@justatheory.com
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For utility statements defined within a function, the query tree is
copied to a PlannedStmt as utility commands do not require planning.
However, the query ID was missing from the information passed down.
This leads to plugins relying on the query ID like pg_stat_statements to
not be able to track utility statements within function calls. Tests
are added to check this behavior, depending on pg_stat_statements.track.
This is an old bug. Now, query IDs for utilities are compiled using
their parsed trees rather than the query string since v16
(3db72ebcbe20), leading to less bloat with utilities, so backpatch down
only to this version.
Author: Anthonin Bonnefoy
Discussion: https://postgr.es/m/CAO6_XqrGp-uwBqi3vBPLuRULKkddjC7R5QZCgsFren=8E+m2Sg@mail.gmail.com
Backpatch-through: 16
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If pg_ctl tries to start the postmaster, but the postmaster shuts down
because it completed a point-in-time recovery, pg_ctl used to report
a message that indicated a failure. It's not really a failure, so
instead say "server shut down because of recovery target settings".
Zhao Junwang, Crisp Lee, Laurenz Albe
Discussion: https://postgr.es/m/CAGHPtV7GttPZ-HvxZuYRy70jLGQMEm5=LQc4fKGa=J74m2VZbg@mail.gmail.com
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To do this, we must include the wal_level in the first WAL record
covered by each summary file; so add wal_level to struct Checkpoint
and the payload of XLOG_CHECKPOINT_REDO and XLOG_END_OF_RECOVERY.
This, in turn, requires bumping XLOG_PAGE_MAGIC and, since the
Checkpoint is also stored in the control file, also
PG_CONTROL_VERSION. It's not great to do that so late in the release
cycle, but the alternative seems to ship v17 without robust
protections against this scenario, which could result in corrupted
incremental backups.
A side effect of this patch is that, when a server with
wal_level=replica is started with summarize_wal=on for the first time,
summarization will no longer begin with the oldest WAL that still
exists in pg_wal, but rather from the first checkpoint after that.
This change should be harmless, because a WAL summary for a partial
checkpoint cycle can never make an incremental backup possible when
it would otherwise not have been.
Report by Fujii Masao. Patch by me. Review and/or testing by Jakub
Wartak and Fujii Masao.
Discussion: http://postgr.es/m/6e30082e-041b-4e31-9633-95a66de76f5d@oss.nttdata.com
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This new macro is able to perform a direct lookup from the local cache
of injection points (refreshed each time a point is loaded or run),
without touching the shared memory state of injection points at all.
This works in combination with INJECTION_POINT_LOAD(), and it is better
than INJECTION_POINT() in a critical section due to the fact that it
would avoid all memory allocations should a concurrent detach happen
since a LOAD(), as it retrieves a callback from the backend-private
memory.
The documentation is updated to describe in more details how to use this
new macro with a load. Some tests are added to the module
injection_points based on a new SQL function that acts as a wrapper of
INJECTION_POINT_CACHED().
Based on a suggestion from Heikki Linnakangas.
Author: Heikki Linnakangas, Michael Paquier
Discussion: https://postgr.es/m/58d588d0-e63f-432f-9181-bed29313dece@iki.fi
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Commit f4b54e1ed9, which introduced macros for protocol characters,
missed updating a few places. It also did not introduce macros for
messages sent from parallel workers to their leader processes.
This commit adds a new section in protocol.h for those.
Author: Aleksander Alekseev
Discussion: https://postgr.es/m/CAJ7c6TNTd09AZq8tGaHS3LDyH_CCnpv0oOz2wN1dGe8zekxrdQ%40mail.gmail.com
Backpatch-through: 17
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Error was detected when testing use of libpq sessions instead of psql
for polling queries.
Discussion: https://postgr.es/m/e86b6d2d-20d8-4ac9-9a98-165fff7db886@dunslane.net
Backpatch to all live branches
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This essentially reverts c2d93c3802b except tests. The problem with
c2d93c3802b was that it only changed the casting behavior for types
with typmod, and had coding issues noted in the post-commit review.
This commit changes coerceJsonFuncExpr() to use assignment-level casts
instead of explicit casts to coerce the result of JSON constructor
functions to the specified or the default RETURNING type. Using
assignment-level casts fixes the problem that using explicit casts was
leading to the wrong typmod / length coercion behavior -- truncating
results longer than the specified length instead of erroring out --
which c2d93c3802b aimed to solve.
That restricts the set of allowed target types to string types, the
same set that's currently allowed.
Discussion: https://postgr.es/m/202406291824.reofujy7xdj3@alvherre.pgsql
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This switches the pgstats write code to use durable_rename() rather than
rename(). This ensures that the stats file's data is durable when the
statistics are written, which is something only happening at shutdown
now with the checkpointer doing the job.
This could cause the statistics to be lost even after PostgreSQL is shut
down, should a host failure happen, for example.
Suggested-by: Konstantin Knizhnik
Reviewed-by: Bertrand Drouvot
Discussion: https://postgr.es/m/ZpDQTZ0cAz0WEbh7@paquier.xyz
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Previously, CREATE MATERIALIZED VIEW ... WITH DATA populated the MV
the same way as CREATE TABLE ... AS.
Instead, reuse the REFRESH logic, which locks down security-restricted
operations and restricts the search_path. This reduces the chance that
a subsequent refresh will fail.
Reported-by: Noah Misch
Backpatch-through: 17
Discussion: https://postgr.es/m/20240630222344.db.nmisch@google.com
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This test was added by commit d2b74882ca, but fails if
log_error_verbosity is set to verbose. Adjust the regex that checks the
error message to allow for it containing an SQL status code.
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This commit provides testig coverage for ccd38024bc3c, checking that a
role granted pg_signal_autovacuum_worker is able to stop a vacuum
worker.
An injection point with a wait is placed at the beginning of autovacuum
worker startup to make sure that a worker is still alive when sending
and processing the signal sent.
Author: Anthony Leung, Michael Paquier, Kirill Reshke
Reviewed-by: Andrey Borodin, Nathan Bossart
Discussion: https://postgr.es/m/CALdSSPiQPuuQpOkF7x0g2QkA5eE-3xXt7hiJFvShV1bHKDvf8w@mail.gmail.com
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Oops.
Reported-by: Nathan Bossart <nathandbossart@gmail.com>
Discussion: https://postgr.es/m/ZpVZB9rH5tHllO75@nathan
Backpatch: 12-, like 43cd30bcd1c
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Reported-by: Noah Misch
Backpatch-through: 17
Discussion: https://postgr.es/m/20240630222344.db.nmisch@google.com
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Before this change guc_var_compare() cast the input arguments to
const struct config_generic *. That's not quite right however, as the input
on one side is often just a char * on one side.
Instead just use char *, the first field in config_generic.
This fixes a -Warray-bounds warning with some versions of gcc. While the
warning is only known to be triggered for <= 15, the issue the warning points
out seems real, so apply the fix everywhere.
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Reported-by: Erik Rijkers <er@xs4all.nl>
Suggested-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/a74a1a0d-0fd2-3649-5224-4f754e8f91aa%40xs4all.nl
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The problem fixed by commit 53c8d6c9 would have been noticed if we'd
been running LLVM's verify pass on generated IR. Doing so also reveals
a complaint about incorrect name mangling, fixed here. Only enabled for
LLVM 17+ because it uses the new pass manager API.
Suggested-by: Dmitry Dolgov <9erthalion6@gmail.com>
Discussion: https://postgr.es/m/CAFj8pRACpVFr7LMdVYENUkScG5FCYMZDDdSGNU-tch%2Bw98OxYg%40mail.gmail.com
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It's a ProcNumber, not a process id. Both are integers, so it's
harmless, but clearly wrong. It's been wrong since forever, the
mistake has survived through a couple of refactorings already.
Spotted-by: Thomas Munro
Discussion: https://www.postgresql.org/message-id/CA+hUKGKPTLSGMyE4Brin-osY8omPLNXmVWDMfrRABLp=6QrR_Q@mail.gmail.com
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