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The return value is not used anywhere.
In passing, add a comment explaining the function's arguments.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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For clarity. Also rename several related macros and turn them into
inline functions.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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This makes their purpose more self-documenting.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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This makes the purpose clearer and avoids having two extra symbols,
one of which (CLOCK_24_HOUR) was unused.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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The test introduced by this commit checks that a reload of
primary_conninfo leads to a WAL receiver restarted, by looking at the
request generated in the server logs. This is something for what there
was no coverage.
This has come up for a different patch, while discussing a regression
where a WAL receiver should not be stopped while waiting for a new
position to stream, like at the end of a timeline. In the case of the
other patch, we want to check that this log entry is not generated, but
if the error message is reworded the test would become silently broken.
The test of this commit ensures that we at least keep track the log
message format, for a supported scenario.
Extracted from a larger patch by the same author.
Author: Xuneng Zhou <xunengzhou@gmail.com>
Discussion: https://postgr.es/m/aQKlC1v2_MXGV6_9@paquier.xyz
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This removes some of the specifics of how the default was set, and adds
a mention of latency as a reason the value is lower than the storage
hardware might suggest. It still mentions caching.
Discussion: https://postgr.es/m/CAKAnmmK_nSPYr53LobUwQD59a-8U9GEC3XGJ43oaTYJq5nAOkw@mail.gmail.com
Backpatch-through: 13
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Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Discussion: https://postgr.es/m/CAN55FZ3kO4vLq56PWrfJ7Fw6Wz8DhEN9j9GX3aScx%2BWOirtK-g%40mail.gmail.com
Backpatch: 15-, where CI support was added
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They use Windows Server 2022, not 2019.
Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Discussion: https://postgr.es/m/flat/CAN55FZ1OsaM+852BMQDJ+Kgfg+07knJ6dM3PjbGbtYaK4qwfqA@mail.gmail.com
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For all extant uses of TupleHashTables, execGrouping.c itself does
nothing with the "tablecxt" except to allocate new hash entries in it,
and the callers do nothing with it except to reset the whole context.
So this is an ideal use-case for a BumpContext, and the hash tables
are frequently big enough for the savings to be significant.
(Commit cc721c459 already taught nodeAgg.c this idea, but neglected
the other callers of BuildTupleHashTable.)
While at it, let's clean up some ill-advised leftovers from rebasing
TupleHashTables on simplehash.h:
* Many comments and variable names were based on the idea that the
tablecxt holds the whole TupleHashTable, whereas now it only holds the
hashed tuples (plus any caller-defined "additional storage"). Rename
to names like tuplescxt and tuplesContext, and adjust the comments.
Also adjust the memory context names to be like "<Foo> hashed tuples".
* Make ResetTupleHashTable() reset the tuplescxt rather than relying
on the caller to do so; that was fairly bizarre and seems like a
recipe for leaks. This is less efficient in the case where nodeAgg.c
uses the same tuplescxt for several different hashtables, but only
microscopically so because mcxt.c will short-circuit the extra resets
via its isReset flag. I judge the extra safety and intellectual
cleanliness well worth those few cycles.
* Remove the long-obsolete "allow_jit" check added by ac88807f9;
instead, just Assert that metacxt and tuplescxt are different.
We need that anyway for this definition of ResetTupleHashTable() to
be safe.
There is a side issue of the extent to which this change invalidates
the planner's estimates of hashtable memory consumption. However,
those estimates are already pretty bad, so improving them seems like
it can be a separate project. This change is useful to do first to
establish consistent executor behavior that the planner can expect.
A loose end not addressed here is that the "entrysize" calculation
in BuildTupleHashTable seems wrong: "sizeof(TupleHashEntryData) +
additionalsize" corresponds neither to the size of the simplehash
entries nor to the total space needed per tuple. It's questionable
why BuildTupleHashTable is second-guessing its caller's nbuckets
choice at all, since the original source of the number should have had
more information. But that all seems wrapped up with the planner's
estimation logic, so let's leave it for the planned followup patch.
Reported-by: Jeff Janes <jeff.janes@gmail.com>
Reported-by: David Rowley <dgrowleyml@gmail.com>
Author: Tom Lane <tgl@sss.pgh.pa.us>
Reviewed-by: David Rowley <dgrowleyml@gmail.com>
Discussion: https://postgr.es/m/CAMkU=1zia0JfW_QR8L5xA2vpa0oqVuiapm78h=WpNsHH13_9uw@mail.gmail.com
Discussion: https://postgr.es/m/2268409.1761512111@sss.pgh.pa.us
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This is a follow up 991295f. I searched over src/ and made all
ItemPointer arguments as const as much as possible.
Note: We cut out from the original patch the pieces that would have
created incompatibilities in the index or table AM APIs. Those could
be considered separately.
Author: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/CAEoWx2nBaypg16Z5ciHuKw66pk850RFWw9ACS2DqqJ_AkKeRsw%40mail.gmail.com
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The original is pretty baroque for no apparent reason; arguably, commit
2f9661311b83 should have done this. Noted while reviewing related code
for bug #18984. This is cosmetic (though I'm surprised that my compiler
generates shorter assembly this way), so no backpatch.
Discussion: https://postgr.es/m/18984-0f4778a6599ac3ae@postgresql.org
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There are a few places where we have
typedef struct FooData { ... } FooData;
typedef FooData *Foo;
and then function declarations with
bar(const Foo x)
which isn't incorrect but probably meant
bar(const FooData *x)
meaning that the thing x points to is immutable, not x itself.
This patch makes those changes where appropriate. In one
case (execGrouping.c), the thing being pointed to was not immutable,
so in that case remove the const altogether, to avoid further
confusion.
Co-authored-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/CAEoWx2m2E0xE8Kvbkv31ULh_E%2B5zph-WA_bEdv3UR9CLhw%2B3vg%40mail.gmail.com
Discussion: https://www.postgresql.org/message-id/CAEoWx2kTDz%3Db6T2xHX78vy_B_osDeCC5dcTCi9eG0vXHp5QpdQ%40mail.gmail.com
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The docs for max_protocol_version suggested PQprotocolVersion()
instead of PQfullProtocolVersion() to find out the exact protocol
version. Since PQprotocolVersion() only returns the major protocol
version, that is bad advice.
Author: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Shinya Kato <shinya11.kato@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CAGECzQSKFxQsYAgr11PhdOr-RtPZEdAXZnHx6U3avLuk3xQaTQ%40mail.gmail.com
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Add const qualifiers to ItemPointerEquals() and ItemPointerCompare().
This will allow further changes up the stack. It also complements
commit aeb767ca0b0, as we now have all of itemptr.h appropriately
const-qualified.
Author: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/CAEoWx2nBaypg16Z5ciHuKw66pk850RFWw9ACS2DqqJ_AkKeRsw@mail.gmail.com
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This makes future editing easier.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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Replace with initializer or memset().
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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literals
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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The new wal_fpi_bytes counter calculates the total amount of full page
images inserted in WAL records, in bytes. This commit exposes this
information in EXPLAIN (ANALYZE, WAL) alongside the existing counters,
for both the text and JSON/YAML outputs, building upon f9a09aa29520.
Author: Shinya Kato <shinya11.kato@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discusssion: https://postgr.es/m/CAOzEurQtZEAfg6P0kU3Wa-f9BWQOi0RzJEMPN56wNTOmJLmfaQ@mail.gmail.com
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This commit reverts 818fefd8fd4, that has been introduced to address a
an instability in some of the TAP tests due to the presence of random
standby snapshot WAL records, when slots are invalidated by
InvalidatePossiblyObsoleteSlot().
Anyway, this commit had also the consequence of introducing a behavior
regression. After 818fefd8fd4, the code may determine that a slot needs
to be invalidated while it may not require one: the slot may have moved
from a conflicting state to a non-conflicting state between the moment
when the mutex is released and the moment when we recheck the slot, in
InvalidatePossiblyObsoleteSlot(). Hence, the invalidations may be more
aggressive than they actually have to.
105b2cb3361 has tackled the test instability in a way that should be
hopefully sufficient for the buildfarm, even for slow members:
- In v18, the test relies on an injection point that bypasses the
creation of the random records generated for standby snapshots,
eliminating the random factor that impacted the test. This option was
not available when 818fefd8fd4 was discussed.
- In v16 and v17, the problem was bypassed by disallowing a slot to
become active in some of the scenarios tested.
While on it, this commit adds a comment to document that it is fine for
a recheck to use xmin and LSN values stored in the slot, without storing
and reusing them across multiple checks.
Reported-by: "suyu.cmj" <mengjuan.cmj@alibaba-inc.com>
Author: Bertrand Drouvot <bertranddrouvot.pg@gmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Discussion: https://postgr.es/m/f492465f-657e-49af-8317-987460cb68b0.mengjuan.cmj@alibaba-inc.com
Backpatch-through: 16
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RIGHT_SEMI joins rely on the HEAP_TUPLE_HAS_MATCH flag to guarantee
that only the first match for each inner tuple is considered.
However, in a parallel hash join, the inner relation is stored in a
shared global hash table that can be probed by multiple workers
concurrently. This allows different workers to inspect and set the
match flags of the same inner tuples at the same time.
If two workers probe the same inner tuple concurrently, both may see
the match flag as unset and emit the same tuple, leading to duplicate
output rows and violating RIGHT_SEMI join semantics.
For now, we disable parallel plans for RIGHT_SEMI joins. In the long
term, it may be possible to support parallel execution by performing
atomic operations on the match flag, for example using a CAS or
similar mechanism.
Backpatch to v18, where RIGHT_SEMI join was introduced.
Bug: #19094
Reported-by: Lori Corbani <Lori.Corbani@jax.org>
Diagnosed-by: Tom Lane <tgl@sss.pgh.pa.us>
Author: Richard Guo <guofenglinux@gmail.com>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/19094-6ed410eb5b256abd@postgresql.org
Backpatch-through: 18
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Because long is 32-bit on 64-bit Windows, it isn't a good datatype to
store the difference between 2 pointers. The under-sized type could
overflow and lead to scary warnings in MEMORY_CONTEXT_CHECKING builds,
such as:
WARNING: problem in alloc set ExecutorState: bad single-chunk %p in block %p
However, the problem lies only in the code running the check, not from
an actual memory accounting bug.
Fix by using "Size" instead of "long". This means using an unsigned
type rather than the previous signed type. If the block's freeptr was
corrupted, we'd still catch that if the unsigned type wrapped. Unsigned
allows us to avoid further needless complexities around comparing signed
and unsigned types.
Author: David Rowley <dgrowleyml@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Backpatch-through: 13
Discussion: https://postgr.es/m/CAApHDvo-RmiT4s33J=aC9C_-wPZjOXQ232V-EZFgKftSsNRi4w@mail.gmail.com
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Reviewed-by: Tatsuo Ishii <ishii@postgresql.org>
Reviewed-by: Thomas Munro <thomas.munro@gmail.com>
Reviewed-by: Peter Eisentraut <peter@eisentraut.org>
Discussion: https://postgr.es/m/bedcc93d06203dfd89815b10f815ca2de8626e85.camel%40j-davis.com
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Two or more constants can have the same location. We handled this
correctly for non squashed constants, but failed to do it if squashed
(resulting in out-of-bounds memory access), because the code structure
became broken by commit 0f65f3eec478: we failed to update 'last_loc'
correctly when skipping these squashed constants.
The simplest fix seems to be to get rid of 'last_loc' altogether -- in
hindsight, it's quite pointless. Also, when ignoring a constant because
of this, make sure to fulfill fill_in_constant_lengths's duty of setting
its length to -1.
Lastly, we can use == instead of <= because the locations have been
sorted beforehand, so the < case cannot arise.
Co-authored-by: Sami Imseih <samimseih@gmail.com>
Co-authored-by: Dmitry Dolgov <9erthalion6@gmail.com>
Reported-by: Konstantin Knizhnik <knizhnik@garret.ru>
Backpatch-through: 18
Discussion: https://www.postgresql.org/message-id/2b91e358-0d99-43f7-be44-d2d4dbce37b3%40garret.ru
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Previously, we'd fill all fields except ccbin, and only later obtain and
detoast ccbin, with hypothetical failures being possible. If ccbin is
null (rare catalog corruption I have never witnessed) or its a corrupted
toast entry, we leak a tiny bit of memory in CacheMemoryContext from
having strdup'd the constraint name. Repair these by only attempting to
fill the struct once ccbin has been detoasted.
Author: Ranier Vilela <ranier.vf@gmail.com>
Discussion: https://postgr.es/m/CAEudQAr=i3_Z4GvmediX900+sSySTeMkvuytYShhQqEwoGyvhA@mail.gmail.com
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Instead of having five separate GUC structs, one for each type, with
the generic part contained in each of them, flip it around and have
one common struct, with the type-specific part has a subfield.
The very original GUC design had type-specific structs and
type-specific lists, and the membership in one of the lists defined
the type. But now the structs themselves know the type (from the
.vartype field), and they are all loaded into a common hash table at
run time, and so this original separation no longer makes sense. It
creates a bunch of inconsistencies in the code about whether the
type-specific or the generic struct is the primary struct, and a lot
of casting in between, which makes certain assumptions about the
struct layouts.
After the change, all these casts are gone and all the data is
accessed via normal field references. Also, various code is
simplified because only one kind of struct needs to be processed.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Reviewed-by: Heikki Linnakangas <hlinnaka@iki.fi>
Discussion: https://www.postgresql.org/message-id/flat/8fdfb91e-60fb-44fa-8df6-f5dea47353c9@eisentraut.org
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Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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for easier readability
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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Co-authored-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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MSVC in C11 mode supports the standard restrict qualifier, so we don't
need the workaround naming pg_restrict anymore.
Even though restrict is in C99 and should be supported by all
supported compilers, we keep the configure test and the hardcoded
redirection to __restrict, because that will also work in C++ in all
supported compilers. (restrict is not part of the C++ standard.)
For backward compatibility for extensions, we keep a #define of
pg_restrict around, but our own code doesn't use it anymore.
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/0e3d8644-c01d-4374-86ea-9f0a987981f0%40eisentraut.org
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The comment "type prefixes (const, signed, volatile, inline) are
handled in pg_config.h." has been mostly not true for a long time.
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XLogRecordAssemble() may be called multiple times before inserting a
record in XLogInsertRecord(), and the amount of FPIs generated inside
a record whose insertion is attempted multiple times may vary.
The logic added in f9a09aa29520 touched directly pgWalUsage in
XLogRecordAssemble(), meaning that it could be possible for pgWalUsage
to be incremented multiple times for a single record. This commit
changes the code to use the same logic as the number of FPIs added to a
record, where XLogRecordAssemble() returns this information and feeds it
to XLogInsertRecord(), updating pgWalUsage only when a record is
inserted.
Reported-by: Shinya Kato <shinya11.kato@gmail.com>
Discussion: https://postgr.es/m/CAOzEurSiSr+rusd0GzVy8Bt30QwLTK=ugVMnF6=5WhsSrukvvw@mail.gmail.com
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The new %S substitution shows the current value of search_path.
Note that this only works when connected to Postgres v18 or newer,
since search_path was first marked as GUC_REPORT in commit
28a1121fd9. On older versions that don't report search_path, %S is
replaced with a question mark.
Suggested-by: Lauri Siltanen <lauri.siltanen@gmail.com>
Author: Florents Tselai <florents.tselai@gmail.com>
Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl>
Reviewed-by: Jim Jones <jim.jones@uni-muenster.de>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://postgr.es/m/CANsM767JhTKCRagTaq5Lz52fVwLPVkhSpyD1C%2BOrridGv0SO0A%40mail.gmail.com
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Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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This saves some vertical space and makes the comments style more
consistent with the rest of the code.
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/6dd9d208-a3ed-49b5-b03d-8617261da973%40eisentraut.org
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I have never seen this be a problem in practice, but it came up when
purposely corrupting catalog contents to study the fix for a nearby bug:
we'd try to decrement relchecks, but since it's zero we error out and
fail to drop the constraint. The fix is to downgrade the error to
warning, skip decrementing the counter, and otherwise proceed normally.
Given lack of field complaints, no backpatch.
Author: Álvaro Herrera <alvherre@kurilemu.de>
Discussion: https://postgr.es/m/202508291058.q2zscdcs64fj@alvherre.pgsql
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Suggested-by: Thomas Munro <thomas.munro@gmail.com>
Discussion: https://postgr.es/m/CA+hUKGLXQUYK7Cq5KbLGgTWo7pORs7yhBWO1AEnZt7xTYbLRhg@mail.gmail.com
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Some recent changes were made to remove the explicit dependency on
btree indexes in some parts of the code. One of these changes was
made in commit 9ef1851685b, which allows non-btree indexes to be used
in get_actual_variable_range(). A follow-up commit ee1ae8b99f9 fixes
the cases where an index doesn’t have a sortopfamily as this is a
prerequisite to be used in get_actual_variable_range().
However, it was found that indexes that have amcanorder = true but do
not allow index-only-scans (amcanreturn returns false or is NULL) will
pass all of the conditions, while they should be rejected since
get_actual_variable_range() uses the index-only-scan machinery in
get_actual_variable_endpoint(). Such an index might cause errors like
ERROR: no data returned for index-only scan
during query planning.
The fix is to add a check in get_actual_variable_range() to reject
indexes that do not allow index-only scans.
Author: Maxime Schoemans <maxime.schoemans@enterprisedb.com>
Discussion: https://www.postgresql.org/message-id/flat/20ED852A-C2D9-41EB-8671-8C8B9D418BE9%40enterprisedb.com
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This new counter, called "wal_fpi_bytes", tracks the total amount in
bytes of full page images (FPIs) generated in WAL. This data becomes
available globally via pg_stat_wal, and for backend statistics via
pg_stat_get_backend_wal().
Previously, this information could only be retrieved with pg_waldump or
pg_walinspect, which may not be available depending on the environment,
and are expensive to execute. It offers hints about how much FPIs
impact the WAL generated, which could be a large percentage for some
workloads, as well as the effects of wal_compression or page holes.
Bump catalog version.
Bump PGSTAT_FILE_FORMAT_ID, due to the addition of wal_fpi_bytes in
PgStat_WalCounters.
Author: Shinya Kato <shinya11.kato@gmail.com>
Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/CAOzEurQtZEAfg6P0kU3Wa-f9BWQOi0RzJEMPN56wNTOmJLmfaQ@mail.gmail.com
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Extend logicalrep_worker_stop, logicalrep_worker_wakeup, and
logicalrep_worker_find to accept a worker type argument. This change
enables differentiation between logical replication worker types, such as
apply workers and table sync workers. While preserving existing behavior,
it lays the groundwork for upcoming patch to add sequence synchronization
workers.
Author: Vignesh C <vignesh21@gmail.com>
Reviewed-by: shveta malik <shveta.malik@gmail.com>
Reviewed-by: Peter Smith <smithpb2250@gmail.com>
Reviewed-by: Chao Li <li.evan.chao@gmail.com>
Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Discussion: https://postgr.es/m/CAA4eK1LC+KJiAkSrpE_NwvNdidw9F2os7GERUeSxSKv71gXysQ@mail.gmail.com
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Two tests are changed in this commit:
- libpq's 006_service
- ldap's 003_ldap_connection_param_lookup
CRLF translation is already handled by the text mode, so there should be
need for any specific logic. See also 1c6d4629394d, msys perl being one
case where the translation mattered.
Note: This is first applied on HEAD, and backpatch will follow once the
buildfarm has provided an opinion about this commit.
Author: Jacob Champion <jacob.champion@enterprisedb.com>
Co-authored-by: Michael Paquier <michael@paquier.xyz>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/aPsh39bxwYKvUlAf@paquier.xyz
Backpatch-through: 13
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These were discovered while reviewing Aleksander Alekseev's
proposed changes to pgindent.
Oversights in commits 393e0d2314 and 25a30bbd42.
Discussion: https://postgr.es/m/aP-H6kSsGOxaB21k%40nathan
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The existing RLS tests focus on the outcomes of various testing
scenarios, rather than the exact policies applied. This sometimes
makes it hard to see why a particular result occurred (e.g., which
policy failed), or to construct a test that fails a particular policy
check without an earlier check failing. These new tests issue NOTICE
messages to show the actual policies applied for each command type,
including the different paths through INSERT ... ON CONFLICT and
MERGE, making it easier to verify the expected behaviour.
Author: Dean Rasheed <dean.a.rasheed@gmail.com>
Reviewed-by: Viktor Holmberg <v@viktorh.net>
Reviewed-by: Jian He <jian.universality@gmail.com>
Discussion: https://postgr.es/m/CAEZATCWqnfeChjK=n1V_dYZT4rt4mnq+ybf9c0qXDYTVMsy8pg@mail.gmail.com
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Add some const qualifications afforded by the previous change that
added a const qualification to PageAddItemExtended().
Reviewed-by: Nathan Bossart <nathandbossart@gmail.com>
Reviewed-by: Peter Geoghegan <pg@bowt.ie>
Discussion: https://www.postgresql.org/message-id/flat/c75cccf5-5709-407b-a36a-2ae6570be766@eisentraut.org
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This type is just char * underneath, it provides no real value, no
type safety, and just makes the code one level more mysterious. It is
more idiomatic to refer to blobs of memory by a combination of void *
and size_t, so change it to that.
Also, since this type hides the pointerness, we can't apply qualifiers
to what is pointed to, which requires some unconstify nonsense. This
change allows fixing that.
Extension code that uses the Item type can change its code to use
void * to be backward compatible.
Reviewed-by: Nathan Bossart <nathandbossart@gmail.com>
Reviewed-by: Peter Geoghegan <pg@bowt.ie>
Discussion: https://www.postgresql.org/message-id/flat/c75cccf5-5709-407b-a36a-2ae6570be766@eisentraut.org
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The use of the restrict qualifier in casts is meaningless, so remove
them.
Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://www.postgresql.org/message-id/flat/0e3d8644-c01d-4374-86ea-9f0a987981f0%40eisentraut.org
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Previously, the check_hook for synchronized_standby_slots attempted to
validate that each specified slot existed and was physical. However, these
checks were not performed during server startup. As a result, if users
configured non-existent slots before startup, the misconfiguration would
go undetected initially. This could later cause parallel query failures,
as newly launched workers would detect the issue and raise an ERROR.
This patch improves the check_hook by validating the syntax and format of
slot names. Validation of slot existence and type is deferred to the WAL
sender process, aligning with the behavior of the check_hook for
primary_slot_name.
Reported-by: Fabrice Chapuis <fabrice636861@gmail.com>
Author: Shlok Kyal <shlok.kyal.oss@gmail.com>
Reviewed-by: Hayato Kuroda <kuroda.hayato@fujitsu.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Ashutosh Sharma <ashu.coek88@gmail.com>
Reviewed-by: Rahila Syed <rahilasyed90@gmail.com>
Backpatch-through: 17, where it was introduced
Discussion: https://postgr.es/m/CAA5-nLCeO4MQzWipCXH58qf0arruiw0OeUc1+Q=Z=4GM+=v1NQ@mail.gmail.com
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Ensure that the target table on the subscriber exists before executing any
DML intended for replication.
Currently, if the table is missing, the replication logic keeps retrying
until the table is eventually created by the test. Although this behaviour
does not cause test failures, since the table is created after the INSERT
is published and replication eventually succeeds, however, it introduces
unnecessary looping and delays.
Author: Grem Snoort <grem.snoort@gmail.com>
Discussion: https://postgr.es/m/CANV9Qw5HD7=Fp4nox2O7DoVctHoabRRVW9Soo4A=QipqW5B=Tg@mail.gmail.com
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Reported-by: Thomas Munro <thomas.munro@gmail.com>
Discussion: https://postgr.es/m/CA+hUKGJ5Xh0KxLYXDZuPvw1_fHX=yuzb4xxtam1Cr6TPZZ1o+w@mail.gmail.com
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When dealing with ResultRelInfos for partitions, there are cases where
there are mixed requirements for the ri_RootResultRelInfo. There are
cases when the partition itself requires a NULL ri_RootResultRelInfo and
in the same query, the same partition may require a ResultRelInfo with
its parent set in ri_RootResultRelInfo. This could cause the column
mapping between the partitioned table and the partition not to be done
which could result in crashes if the column attnums didn't match
exactly.
The fix is simple. We now check that the ri_RootResultRelInfo matches
what the caller passed to ExecGetTriggerResultRel() and only return a
cached ResultRelInfo when the ri_RootResultRelInfo matches what the
caller wants, otherwise we'll make a new one.
Author: David Rowley <dgrowleyml@gmail.com>
Author: Amit Langote <amitlangote09@gmail.com>
Reported-by: Dmitry Fomin <fomin.list@gmail.com>
Discussion: https://postgr.es/m/7DCE78D7-0520-4207-822B-92F60AEA14B4@gmail.com
Backpatch-through: 15
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