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Databases exist, contrary to datatabases.
Oversight in e83d1b0c40cc.
Author: Japin Li
Discussion: https://postgr.es/m/ME3P282MB316611A2F7BF43919F695228B6082@ME3P282MB3166.AUSP282.PROD.OUTLOOK.COM
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The ON_ERROR option of the COPY command previously allowed omitting
its value, which was inconsistent with the syntax synopsis in the
documentation and the behavior of other non-boolean COPY options.
This change enforces providing a value for the ON_ERROR option,
ensuring consistency across other non-boolean options and aligning
with the documented syntax.
Author: Atsushi Torikoshi
Reviewed-by: Masahiko Sawada
Discussion: https://postgr.es/m/a9770bf57646d90dedc3d54cf32634b2%40oss.nttdata.com
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Oversight in 29f6a959c.
In passing, since we now have 4 memory context types to choose from,
provide a brief overview of the specialities of each memory context
type.
Reported-by: Amul Sul
Author: Amul Sul, David Rowley
Discussion: https://postgr.es/m/CAAJ_b94U2s9nHh--DEK=sPEZUQ+x7vQJ7529fF8UAH97QJ9NXg@mail.gmail.com
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BumpContext relies on using the head block from its 'blocks' field to
use as the current block to allocate new chunks to. When we receive an
allocation request larger than allocChunkLimit, we place these chunks on
a new dedicated block and, until now, we pushed the block onto the
*head* of the 'blocks' list.
This behavior caused the previous bump block to no longer be available
for new normal-sized (non-large) allocations and would result in blocks
only being partially filled if a large allocation request arrived before
the block became full.
Here adjust the code to push these dedicated blocks onto the *tail* of
the blocks list so that the head block remains intact and available to
be used by normal allocation request sizes until it becomes full.
In passing, make the elog(ERROR) calls for the unsupported callbacks
consistent. Likewise for the header comments for those functions.
Discussion: https://postgr.es/m/CAApHDvp9___r-ayJj0nZ6GD3MeCGwGZ0_6ZptWpwj+zqHtmwCw@mail.gmail.com
Discussion: https://postgr.es/m/CAApHDvqerXpzUnuDQfUEi3DZA+9=Ud9WSt3ruxN5b6PcOosx2g@mail.gmail.com
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Some new code probably didn't see 605721f819f and continued to use
type int for parse location fields. Fix those.
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Per buildfarm member koel.
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The code associated with EXEC SQL DEFINE was unreadable and full of
bugs, notably:
* It'd attempt to free a non-malloced string if the ecpg program
tries to redefine a macro that was defined on the command line.
* Possible memory stomp if user writes "-D=foo".
* Undef'ing or redefining a macro defined on the command line would
change the state visible to the next file, when multiple files are
specified on the command line. (While possibly that could have been
an intentional choice, the code clearly intends to revert to the
original macro state; it's just failing to consider this interaction.)
* Missing "break" in defining a new macro meant that redefinition
of an existing name would cause an extra entry to be added to the
definition list. While not immediately harmful, a subsequent undef
would result in the prior entry becoming visible again.
* The interactions with input buffering are subtle and were entirely
undocumented.
It's not that surprising that we hadn't noticed these bugs,
because there was no test coverage at all of either the -D
command line switch or multiple input files. This patch adds
such coverage (in a rather hacky way I guess).
In addition to the code bugs, the user documentation was confused
about whether the -D switch defines a C macro or an ecpg one, and
it failed to mention that you can write "-Dsymbol=value".
These problems are old, so back-patch to all supported branches.
Discussion: https://postgr.es/m/998011.1713217712@sss.pgh.pa.us
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Oversight in commit c9c0589fda.
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6377e12a5 should not have removed AcquireSampleRowsFunc,
as that's still in use. Per buildfarm member koel.
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When building a join clause derived from an EquivalenceClass, if the
clause is to be used with an appendrel child relation then make sure
its clause_relids include the relids of that child relation.
Normally this would be true already because the EquivalenceMember
would be a Var of that relation. However, if the appendrel represents
a flattened UNION ALL construct then some child EquivalenceMembers
could be constants with no relids. The resulting under-marked clause
is problematic because it could mislead join_clause_is_movable_into
about where the clause should be evaluated. We do not have an example
showing incorrect plan generation, but there are existing cases in
the regression tests that will fail the Asserts this patch adds to
get_baserel_parampathinfo. A similarly wrong conclusion about a
clause being considered by get_joinrel_parampathinfo would lead to
wrong placement of the clause. (This also squares with the way
that clause_relids is calculated for non-equijoin clauses in
adjust_appendrel_attrs.)
The other reason for wanting these new Asserts is that the previous
blithe assumption that the results of generate_join_implied_equalities
"necessarily satisfy join_clause_is_movable_into" turns out to be
wrong pre-v16. If it's still wrong it'd be good to find out.
Per bug #18429 from Benoît Ryder. The bug as filed was fixed by
commit 2489d76c4, but these changes correlate with the fix we
will need to apply in pre-v16 branches.
Discussion: https://postgr.es/m/18429-8982d4a348cc86c6@postgresql.org
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Oversight in commit 0d861bbb70.
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Oversight in commit e5d8a99903.
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This commit reverts 27bc1772fc and dd1f6b0c17. Per review by Andres Freund.
Discussion: https://postgr.es/m/20240415201057.khoyxbwwxfgzomeo%40awork3.anarazel.de
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There were no callers of BumpAllocLarge() in the regression tests, so
here we add a sort with a tuple large enough to use that path in bump.c.
Also, BumpStats() wasn't being called, so add a test to sysviews.sql to
call pg_backend_memory_contexts() while a bump context exists in the
backend.
Reported-by: Andres Freund
Discussion: https://postgr.es/m/20240414223305.m3i5eju6zylabvln@awork3.anarazel.de
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All backend-side variables should be marked with PGDLLIMPORT, as per
policy introduced in 8ec569479f. aafc05de1bf5 has forgotten
MyClientSocket, and 05c3980e7f47 LoadedSSL.
These can be spotted with a command like this one (be careful of not
switching __pg_log_level):
src/tools/mark_pgdllimport.pl $(git ls-files src/include/)
Reported-by: Peter Eisentraut
Discussion: https://postgr.es/m/ZhzkRzrkKhbeQMRm@paquier.xyz
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Commit 2ed8f9a01 intended to institute a policy that if a
RangeTblFunction has a coldeflist, then the function return type is
certainly RECORD, and we should use the coldeflist as the source of
truth about what the columns of the record type are. When the
original function has been folded to a constant, inspection of the
constant might give a different answer. This situation will lead to
a tuple-type-mismatch error at execution, but up until that point we
need to consistently believe the coldeflist, or we'll have problems
from different bits of code reaching different conclusions.
expandRTE didn't get that memo though, and would try to produce a
tupdesc based on the constant in this situation, leading to an
assertion failure. (Desultory testing suggests that non-assert
builds often manage to give the expected error, although I also
saw a "cache lookup failed for type 0" error, and it seems at
least possible that a crash could happen.)
Some other callers of get_expr_result_type and get_expr_result_tupdesc
were also being incautious about this. While none of them seem to
have actual bugs, they're working harder than necessary in this case,
besides which it seems safest to have an explicit policy of not using
those functions on an RTE with a coldeflist. Adjust the code
accordingly, and add commentary to funcapi.c about this policy.
Also fix an obsolete comment that claimed "get_expr_result_type()
doesn't know how to extract type info from a RECORD constant".
That hasn't been true since commit d57534740.
Per bug #18422 from Alexander Lakhin.
As with the previous commit, back-patch to all supported branches.
Discussion: https://postgr.es/m/18422-89ca86c8eac5246d@postgresql.org
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When matching constraints in AttachPartitionEnsureIndexes() we weren't
testing the constraint type, which could make a UNIQUE key lacking a
not-null constraint incorrectly satisfy a primary key requirement. Fix
this by testing that the constraint types match. (Other possible
mismatches are verified by comparing index properties.)
Discussion: https://postgr.es/m/202402051447.wimb4xmtiiyb@alvherre.pgsql
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The fixes relate to comments, error messages, and corresponding expected output
of regression tests.
Discussion: https://postgr.es/m/CAMbWs49DDsknxyoycBqiE72VxzL_sYHF6zqL8dSeNehKPJhkKg%40mail.gmail.com
Discussion: https://postgr.es/m/86bfd241-a58c-479a-9a72-2c67a02becf8%40postgrespro.ru
Discussion: https://postgr.es/m/CAHewXNkGMPU50QG7V6Q60JGFORfo8LfYO1_GCkCa0VWbmB-fEw%40mail.gmail.com
Author: Richard Guo, Dmitry Koval, Tender Wang
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In one of the many strange corner cases of multiple inheritance being
used, commit b0e96f311985 missed a CommandCounterIncrement() call after
updating the attnotnull flag during ALTER TABLE ADD COLUMN, which caused
a catalog tuple to be update attempted twice in the same command, giving
rise to a "tuple already updated by self" error. Add the missing call
to solve that, and a test case that reproduces the scenario.
As a (perhaps surprising) secondary effect, this CCI addition triggers
another behavior change: when a primary key is added to a parent
partitioned table and the column in an existing partition does not have
a not-null constraint, we no longer error out. This will probably be a
welcome change by some users, and I think it's unlikely that anybody
will miss the old behavior.
Reported-by: Alexander Lakhin <exclusion@gmail.com>
Discussion: http://postgr.es/m/045dec3f-9b3d-aa44-0c99-85f6992306c7@gmail.com
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\dD showed domain check constraints in arbitrary order, which can
cause regression test failures, which was exposed by commit
9895b35cb8. To fix, order the constraints by conname, which matches
what psql does in other queries listing constraints.
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This addresses a few problems with commit e5da0fe3c22 ("Catalog domain
not-null constraints").
In CREATE DOMAIN, a NOT NULL constraint looks like
CREATE DOMAIN d1 AS int [ CONSTRAINT conname ] NOT NULL
(Before e5da0fe3c22, the constraint name was accepted but ignored.)
But in ALTER DOMAIN, a NOT NULL constraint looks like
ALTER DOMAIN d1 ADD [ CONSTRAINT conname ] NOT NULL VALUE
where VALUE is where for a table constraint the column name would be.
(This works as of e5da0fe3c22. Before e5da0fe3c22, this syntax
resulted in an internal error.)
But for domains, this latter syntax is confusing and needlessly
inconsistent between CREATE and ALTER. So this changes it to just
ALTER DOMAIN d1 ADD [ CONSTRAINT conname ] NOT NULL
(None of these syntaxes are per SQL standard; we are just living with
the bits of inconsistency that have built up over time.)
In passing, this also changes the psql \dD output to not show not-null
constraints in the column "Check", since it's already shown in the
column "Nullable". This has also been off since e5da0fe3c22.
Reviewed-by: jian he <jian.universality@gmail.com>
Discussion: https://www.postgresql.org/message-id/flat/9ec24d7b-633d-463a-84c6-7acff769c9e8%40eisentraut.org
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Coverity pointed out that the function checks for conn->sslmode !=
NULL, which implies that it might be NULL, but later we access it
without a NULL-check anyway. It doesn't know that it is in fact always
initialized earlier, in conninfo_add_defaults(), and hence the
NULL-check is not necessary. However, there is a lot of distance
between conninfo_add_defaults() and pqConnectOptions2(), so it's not
surprising that it doesn't see that. Put back the initialization code,
as it existed before commit 05fd30c0e7, to silence the warning.
In the long run, I'd like to refactor the libpq options handling and
initalization code. It seems silly to strdup() and copy strings, for
things like sslmode that have a limited set of possible values; it
should be an enum. But that's for another day.
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Commit 10e3226ba13d added padding to incremental backups to ensure the
block data is properly aligned. The code in sendFile() however failed to
consider that the header may be a multiple of BLCKSZ and thus already
aligned, adding a full BLCKSZ of unnecessary padding.
Not only does this make the incremental file a bit larger, but the other
places calculating the amount of padding did realize it's not needed and
did not include it in the formula. This resulted in pg_basebackup
getting confused while parsing the data stream, trying to access files
with invalid filenames (e.g. with binary data etc.) and failing.
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Commit 6bcda4a721 replaced PG_DETOAST_DATUM with PG_DETOAST_DATUM_PACKED
in two BRIN output functions, for minmax-multi and bloom opclasses. But
this is incorrect - the code is accessing the data through structs that
already include a 4B header, so the detoast needs to match that. But the
PACKED macro may keep the 1B header, which means the struct fields will
point to incorrect data.
Backpatch-through: 16
Discussion: https://postgr.es/m/1df00a66-db5a-4e66-809a-99b386a06d86%40enterprisedb.com
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Properly update the number of bits set in the bitmap after merging the
filters in brin_bloom_union.
This is mostly harmless, as the counter is used only in the output
function, which means pageinspect may show incorrect information about
the BRIN summary. The counter does not affect correctness.
Discovered while adding a regression test comparing indexes built with
and without parallelism. The parallel index builds exercise the union
procedure when merging results from workers, which is otherwise very
hard to do in a test. Which is why this went unnoticed until now.
Backpatch through 14, where the BRIN bloom opclasses were introduced.
Backpatch-through: 14
Discussion: https://postgr.es/m/1df00a66-db5a-4e66-809a-99b386a06d86%40enterprisedb.com
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GetPageWithFreeSpace() callers assume the returned block exists in the
main fork, failing with "could not read block" errors if that doesn't
hold. Make that assumption reliable now. It hadn't been guaranteed,
due to the weak WAL and data ordering of participating components. Most
operations on the fsm fork are not WAL-logged. Relation extension is
not WAL-logged. Hence, an fsm-fork block on disk can reference a
main-fork block that no WAL record has initialized. That could happen
after an OS crash, a replica promote, or a PITR restore. wal_log_hints
makes the trouble easier to hit; a replica promote or PITR ending just
after a relevant fsm-fork FPI_FOR_HINT may yield this broken state. The
v16 RelationAddBlocks() mechanism also makes the trouble easier to hit,
since it bulk-extends even without extension lock waiters. Commit
917dc7d2393ce680dea7a59418be9ff341df3c14 stopped trouble around
truncation, but vectors involving PageIsNew() pages remained.
This implementation adds a RelationGetNumberOfBlocks() call when the
cached relation size doesn't confirm a block exists. We've been unable
to identify a benchmark that slows materially, but this may show up as
additional time in lseek(). An alternative without that overhead would
be a new ReadBufferMode such that ReadBufferExtended() returns NULL
after a 0-byte read, with all other errors handled normally. However,
each GetFreeIndexPage() caller would then need code for the return-NULL
case. Back-patch to v14, due to earlier versions not caching relation
size and the absence of a pre-v16 problem report.
Ronan Dunklau. Reported by Ronan Dunklau.
Discussion: https://postgr.es/m/1878547.tdWV9SEqCh%40aivenlaptop
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In the libpq encryption negotiation tests, don't run the GSSAPI tests
unless PG_TEST_EXTRA='kerberos' is also set. That makes it possible to
still run most of the tests when GSSAPI support is compiled in, but
there's no MIT Kerberos installation.
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The test targets libpq's options, so 'src/test/interfaces/libpq/t' is
a more natural place for it.
While doing this, I noticed that I had missed adding the
libpq_encryption subdir to the Makefile. That's why this commit only
needs to remove it from the meson.build file.
Per Peter Eisentraut's suggestion.
Discussion: https://www.postgresql.org/message-id/09d4bf5d-d0fa-4c66-a1d7-5ec757609646@eisentraut.org
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The #define is spelled ENABLE_GSS, not USE_GSS. Introduced in commit
05fd30c0e7, reported by Thomas Munro.
Discussion: https://www.postgresql.org/message-id/CA%2BhUKG%2BHRTtB%2Bx%2BKKKj_cfX6sNhbeGuqmGxjGMwdVPG7YGFP8w@mail.gmail.com
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It correctly skipped tests involving SSL in the server when SSL
support was not compiled in, but even when SSL is not enabled in the
server and the connection is established without SSL, libpq behaves
differently in many of the test scenarios when libpq is compiled
without SSL support. For example, with sslmode=prefer, if libpq is
compiled with SSL support it will attempt to use SSL, but without SSL
support it will try authenticating in plaintext mode directly. The
expected test output didn't take that into account.
Discussion: https://www.postgresql.org/message-id/CA%2BhUKG%2BHRTtB%2Bx%2BKKKj_cfX6sNhbeGuqmGxjGMwdVPG7YGFP8w@mail.gmail.com
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Per complaint from Andres Freund. Follow his suggestion to allocate the
buffer once in the calling routine instead.
Also make a tiny indentation improvement.
Discussion: https://postgr.es/m/20240411190147.a3yries632olfcgg@awork3.anarazel.de
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Per gripes from Michael Paquier
Discussion: https://postgr.es/m/ZhTQ6_w1vwOhqTQI@paquier.xyz
Along the way, also clean up a handful of typos in 3311ea86ed and
ea7b4e9a2a, found by Alexander Lakhin, and a couple of stylistic
snafus noted by Daniel Westermann and Daniel Gustafsson.
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Also delete live URLs
Jacob Champion
Discussion: https://postgr.es/m/CAOYmi+mtH=V1wZKAOauCd5QqQWr61hnXMJbJ9h-CZXAa1JXd3w@mail.gmail.com
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This just makes sure the test can run with a single iteration. A real
performance test would test with many more.
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Coverity complained about not freeing some memory associated with
incrementally parsing backup manifests. To fix that, provide and use a new
shutdown function for the JsonManifestParseIncrementalState object, in
line with a suggestion from Tom Lane.
While analysing the problem, I noticed a buglet in freeing memory for
incremental json lexers. To fix that remove a bogus condition on
freeing the memory allocated for them.
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Reported-by: Richard Guo
Discussion: https://postgr.es/m/CAMbWs49kAsZUsj7-0SBLvE9+uKz0RCqMEmM3NVytc1YvS8sTrQ@mail.gmail.com
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Ensure that when updating the catalog_xmin of the synced slots, it is
first written to disk before changing the in-memory value
(effective_catalog_xmin). This is to prevent a scenario where the
in-memory value change triggers a vacuum to remove catalog tuples before
the catalog_xmin is written to disk. In the event of a crash before the
catalog_xmin is persisted, we would not know that some required catalog
tuples have been removed and the synced slot would be invalidated.
Change the sanity check to ensure that remote_slot's confirmed_flush LSN
can't precede the local/synced slot during slot sync. Note that the
restart_lsn of the synced/local slot can be ahead of remote_slot. This can
happen when slot advancing machinery finds a running xacts record after
reaching the consistent state at a later point than the primary where it
serializes the snapshot and updates the restart_lsn.
Make the check to sync slots robust by allowing to sync only when the
confirmed_lsn, restart_lsn, or catalog_xmin of the remote slot is ahead of
the synced/local slot.
Reported-by: Amit Kapila and Shveta Malik
Author: Hou Zhijie, Shveta Malik
Reviewed-by: Amit Kapila, Bertrand Drouvot
Discussion: https://postgr.es/m/OS0PR01MB57162B67D3CB01B2756FBA6D94062@OS0PR01MB5716.jpnprd01.prod.outlook.com
Discussion: https://postgr.es/m/CAJpy0uCSS5zmdyUXhvw41HSdTbRqX1hbYqkOfHNj7qQ+2zn0AQ@mail.gmail.com
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b262ad440 added code to have the planner remove redundant IS NOT NULL
quals and eliminate needless scans for IS NULL quals on tables where the
qual's column has a NOT NULL constraint.
That commit failed to consider that an inheritance parent table could
have differing NOT NULL constraints between the parent and the child.
This caused issues as if we eliminated a qual on the parent, when
applying the quals to child tables in apply_child_basequals(), the qual
might not have been added to the parent's baserestrictinfo.
Here we fix this by not applying the optimization to remove redundant
quals to RelOptInfos belonging to inheritance parents and applying the
optimization again in apply_child_basequals(). Effectively, this means
that the parent and child are considered independently as the parent has
both an inh=true and inh=false RTE and we still apply the optimization
to the RelOptInfo corresponding to the inh=false RTE.
We're able to still apply the optimization in add_base_clause_to_rel()
for partitioned tables as the NULLability of partitions must match that
of their parent. And, if we ever expand restriction_is_always_false()
and restriction_is_always_true() to handle partition constraints then we
can apply the same logic as, even in multi-level partitioned tables,
there's no way to route values to a partition when the qual does not
match the partition qual of the partitioned table's parent partition.
The same is true for CHECK constraints as those must also match between
arent partitioned tables and their partitions.
Author: Richard Guo, David Rowley
Discussion: https://postgr.es/m/CAMbWs4930gQSZmjR7aANzEapdy61gCg6z8dT-kAEYD0sYWKPdQ@mail.gmail.com
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This commit reverts 06c418e163, e37662f221, bf1e650806, 25f42429e2,
ee79928441, and 74eaf66f98 per review by Heikki Linnakangas.
Discussion: https://postgr.es/m/b155606b-e744-4218-bda5-29379779da1a%40iki.fi
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This commit reverts 02eb07ea89 per review by Andres Freund.
Discussion: https://postgr.es/m/20240410165236.rwyrny7ihi4ddxw4%40awork3.anarazel.de
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This commit reverts c35a3fb5e0 per review by Andres Freund.
Discussion: https://postgr.es/m/20240410165236.rwyrny7ihi4ddxw4%40awork3.anarazel.de
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This commit reverts 87985cc925 and 818861eb57 per review by Andres Freund.
Discussion: https://postgr.es/m/20240410165236.rwyrny7ihi4ddxw4%40awork3.anarazel.de
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This commit reverts b1484a3f19 per review by Andres Freund.
Discussion: https://postgr.es/m/20240410165236.rwyrny7ihi4ddxw4%40awork3.anarazel.de
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This commit reverts 9bd99f4c26 and 422041542f per review by Andres Freund.
Discussion: https://postgr.es/m/20240410165236.rwyrny7ihi4ddxw4%40awork3.anarazel.de
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Two variables storing a slot's effective_xmin and effective_catalog_xmin
were saved as XLogRecPtr, which is incorrect as these should be
TransactionIds.
Oversight in 818fefd8fd44.
Author: Bharath Rupireddy
Discussion: https://postgr.es/m/CALj2ACVPSB74mrDTFezz-LV3Oi6F3SN71QA0oUHvndzi5dwTNg@mail.gmail.com
Backpatch-through: 16
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This reverts commit b840508644 and bcb14f4abc. These commits were made
for commit 5bec1d6bc5 (Improve eviction algorithm in ReorderBuffer
using max-heap for many subtransactions). However, per discussion,
commit efb8acc0d0 replaced binary heap + index with pairing heap, and
made these commits unnecessary.
Reported-by: Jeff Davis
Discussion: https://postgr.es/m/12747c15811d94efcc5cda72d6b35c80d7bf3443.camel%40j-davis.com
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A pairing heap can perform the same operations as the binary heap +
index, with as good or better algorithmic complexity, and that's an
existing data structure so that we don't need to invent anything new
compared to v16. This commit makes the new binaryheap functionality
that was added in commits b840508644 and bcb14f4abc unnecessary, but
they will be reverted separately.
Remove the optimization to only build and maintain the heap when the
amount of memory used is close to the limit, becuase the bookkeeping
overhead with the pairing heap seems to be small enough that it
doesn't matter in practice.
Reported-by: Jeff Davis
Author: Heikki Linnakangas
Reviewed-by: Michael Paquier, Hayato Kuroda, Masahiko Sawada
Discussion: https://postgr.es/m/12747c15811d94efcc5cda72d6b35c80d7bf3443.camel%40j-davis.com
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Reported-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/ZhdKqj5DwoOzirFv%40paquier.xyz
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The user can set RELSEG_SIZE to a high number at compile time, so we
can't use it to control the size of an array on the stack: it could be
many gigabytes in size. On closer inspection, we don't really need that
intermediate array anyway. Let's just write directly into the output
array, and then perform the absolute->relative adjustment in place.
This fixes new code from commit dc212340058.
Reviewed-by: Robert Haas <robertmhaas@gmail.com>
Discussion: https://postgr.es/m/CA%2BhUKG%2B2hZ0sBztPW4mkLfng0qfkNtAHFUfxOMLizJ0BPmi5%2Bg%40mail.gmail.com
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aa5edbe379d6 has tweaked _hash_freeovflpage() so as the write buffer's
LSN is updated only when necessary, when REGBUF_NO_CHANGE is not used.
The replay code was not consistent with that, causing the write buffer's
LSN to be updated and its page to be marked as dirty even if the buffer
was registered in a "clean" state. This was possible for the case of a
squeeze record when there are no tuples to add to the write buffer, for
(is_prim_bucket_same_wrt && !is_prev_bucket_same_wrt).
I have performed some validation of this commit with
wal_consistency_checking and a change in WAL that logs REGBUF_NO_CHANGE
to a new BKPIMAGE_*. Thanks to that, it is possible to know at replay
if a buffer was clean when it was registered, then cross-checked the LSN
of the "clean" page copy coming from WAL with the LSN of the block once
the record has been replayed. This eats one bit in bimg_info, which is
not acceptable to be integrated as-is, but it could become handy in the
future. I didn't spot other areas than the one fixed by this commit at
the extent of what the main regression test suite covers.
As this is an oversight in aa5edbe379d6, no backpatch is required.
Reported-by: Zubeyr Eryilmaz
Author: Hayato Kuroda
Reviewed-by: Amit Kapila, Michael Paquier
Discussion: https://postgr.es/m/ZbyVVG_7eW3YD5-A@paquier.xyz
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