Commit Graph

52307 Commits

Author SHA1 Message Date
Peter Geoghegan 61a86ed55b Don't overlook indexes during parallel VACUUM.
Commit b4af70cb, which simplified state managed by VACUUM, performed
refactoring of parallel VACUUM in passing.  Confusion about the exact
details of the tasks that the leader process is responsible for led to
code that made it possible for parallel VACUUM to miss a subset of the
table's indexes entirely.  Specifically, indexes that fell under the
min_parallel_index_scan_size size cutoff were missed.  These indexes are
supposed to be vacuumed by the leader (alongside any parallel unsafe
indexes), but weren't vacuumed at all.  Affected indexes could easily
end up with duplicate heap TIDs, once heap TIDs were recycled for new
heap tuples.  This had generic symptoms that might be seen with almost
any index corruption involving structural inconsistencies between an
index and its table.

To fix, make sure that the parallel VACUUM leader process performs any
required index vacuuming for indexes that happen to be below the size
cutoff.  Also document the design of parallel VACUUM with these
below-size-cutoff indexes.

It's unclear how many users might be affected by this bug.  There had to
be at least three indexes on the table to hit the bug: a smaller index,
plus at least two additional indexes that themselves exceed the size
cutoff.  Cases with just one additional index would not run into
trouble, since the parallel VACUUM cost model requires two
larger-than-cutoff indexes on the table to apply any parallel
processing.  Note also that autovacuum was not affected, since it never
uses parallel processing.

Test case based on tests from a larger patch to test parallel VACUUM by
Masahiko Sawada.

Many thanks to Kamigishi Rei for her invaluable help with tracking this
problem down.

Author: Peter Geoghegan <pg@bowt.ie>
Author: Masahiko Sawada <sawada.mshk@gmail.com>
Reported-By: Kamigishi Rei <iijima.yun@koumakan.jp>
Reported-By: Andrew Gierth <andrew@tao11.riddles.org.uk>
Diagnosed-By: Andres Freund <andres@anarazel.de>
Bug: #17245
Discussion: https://postgr.es/m/17245-ddf06aaf85735f36@postgresql.org
Discussion: https://postgr.es/m/20211030023740.qbnsl2xaoh2grq3d@alap3.anarazel.de
Backpatch: 14-, where the refactoring commit appears.
2021-11-02 12:06:16 -07:00
Tom Lane 16a56774fa Fix variable lifespan in ExecInitCoerceToDomain().
This undoes a mistake in 1ec7679f1: domainval and domainnull were
meant to live across loop iterations, but they were incorrectly
moved inside the loop.  The effect was only to emit useless extra
EEOP_MAKE_READONLY steps, so it's not a big deal; nonetheless,
back-patch to v13 where the mistake was introduced.

Ranier Vilela

Discussion: https://postgr.es/m/CAEudQAqXuhbkaAp-sGH6dR6Nsq7v28_0TPexHOm6FiDYqwQD-w@mail.gmail.com
2021-11-02 13:36:53 -04:00
Tom Lane 08cfa5981e Avoid O(N^2) behavior in SyncPostCheckpoint().
As in commits 6301c3ada and e9d9ba2a4, avoid doing repetitive
list_delete_first() operations, since that would be expensive when
there are many files waiting to be unlinked.  This is a slightly
larger change than in those cases.  We have to keep the list state
valid for calls to AbsorbSyncRequests(), so it's necessary to invent a
"canceled" field instead of immediately deleting PendingUnlinkEntry
entries.  Also, because we might not be able to process all the
entries, we need a new list primitive list_delete_first_n().

list_delete_first_n() is almost list_copy_tail(), but it modifies the
input List instead of making a new copy.  I found a couple of existing
uses of the latter that could profitably use the new function.  (There
might be more, but the other callers look like they probably shouldn't
overwrite the input List.)

As before, back-patch to v13.

Discussion: https://postgr.es/m/CD2F0E7F-9822-45EC-A411-AE56F14DEA9F@amazon.com
2021-11-02 11:31:54 -04:00
Tom Lane ad87bf3552 Avoid some other O(N^2) hazards in list manipulation.
In the same spirit as 6301c3ada, fix some more places where we were
using list_delete_first() in a loop and thereby risking O(N^2)
behavior.  It's not clear that the lists manipulated in these spots
can get long enough to be really problematic ... but it's not clear
that they can't, either, and the fixes are simple enough.

As before, back-patch to v13.

Discussion: https://postgr.es/m/CD2F0E7F-9822-45EC-A411-AE56F14DEA9F@amazon.com
2021-11-01 16:24:40 -04:00
Alvaro Herrera 494ec0037e
Handle XLOG_OVERWRITE_CONTRECORD in DecodeXLogOp
Failing to do so results in inability of logical decoding to process the
WAL stream.  Handle it by doing nothing.

Backpatch all the way back.

Reported-by: Petr Jelínek <petr.jelinek@enterprisedb.com>
2021-11-01 13:07:23 -03:00
Michael Paquier f255de9a45 Preserve opclass parameters across REINDEX CONCURRENTLY
The opclass parameter Datums from the old index are fetched in the same
way as for predicates and expressions, by grabbing them directly from
the system catalogs.  They are then copied into the new IndexInfo that
will be used for the creation of the new copy.

This caused the new index to be rebuilt with default parameters rather
than the ones pre-defined by a user.  The only way to get back a new
index with correct opclass parameters would be to recreate a new index
from scratch.

The issue has been introduced by 911e702.

Author: Michael Paquier
Reviewed-by: Zhihong Yu
Discussion: https://postgr.es/m/YX0CG/QpLXcPr8HJ@paquier.xyz
Backpatch-through: 13
2021-11-01 11:40:22 +09:00
Tom Lane 7104e0b245 Don't try to read a multi-GB pg_stat_statements file in one call.
Windows fails on a request to read() more than INT_MAX bytes,
and perhaps other platforms could have similar issues.  Let's
adjust this code to read at most 1GB per call.

(One would not have thought the file could get that big, but now
we have a field report of trouble, so it can.  We likely ought to
add some mechanism to limit the size of the query-texts file
separately from the size of the hash table.  That is not this
patch, though.)

Per bug #17254 from Yusuke Egashira.  It's been like this for
awhile, so back-patch to all supported branches.

Discussion: https://postgr.es/m/17254-a926c89dc03375c2@postgresql.org
2021-10-31 19:13:48 -04:00
Tom Lane 8424dfced7 Avoid O(N^2) behavior when the standby process releases many locks.
When replaying a transaction that held many exclusive locks on the
primary, a standby server's startup process would expend O(N^2)
effort on manipulating the list of locks.  This code was fine when
written, but commit 1cff1b95a made repetitive list_delete_first()
calls inefficient, as explained in its commit message.  Fix by just
iterating the list normally, and releasing storage only when done.
(This'd be inadequate if we needed to recover from an error occurring
partway through; but we don't.)

Back-patch to v13 where 1cff1b95a came in.

Nathan Bossart

Discussion: https://postgr.es/m/CD2F0E7F-9822-45EC-A411-AE56F14DEA9F@amazon.com
2021-10-31 15:31:38 -04:00
Peter Geoghegan bd9f4cf0ee Demote pg_unreachable() in heapam to an assertion.
Commit d168b66682, which overhauled index deletion, added a
pg_unreachable() to the end of a sort comparator used when sorting heap
TIDs from an index page.  This allows the compiler to apply
optimizations that assume that the heap TIDs from the index AM must
always be unique.

That doesn't seem like a good idea now, given recent reports of
corruption involving duplicate TIDs in indexes on Postgres 14.  Demote
to an assertion, just in case.

Backpatch: 14-, where index deletion was overhauled.
2021-10-29 10:53:46 -07:00
Tom Lane 0c8a40b391 Update time zone data files to tzdata release 2021e.
DST law changes in Fiji, Jordan, Palestine, and Samoa.  Historical
corrections for Barbados, Cook Islands, Guyana, Niue, Portugal, and
Tonga.

Also, the Pacific/Enderbury zone has been renamed to Pacific/Kanton.
The following zones have been merged into nearby, more-populous zones
whose clocks have agreed since 1970: Africa/Accra, America/Atikokan,
America/Blanc-Sablon, America/Creston, America/Curacao,
America/Nassau, America/Port_of_Spain, Antarctica/DumontDUrville,
and Antarctica/Syowa.
2021-10-29 11:38:32 -04:00
Tom Lane b1f943d2aa Improve contrib/amcheck's tests for CREATE INDEX CONCURRENTLY.
Commits fdd965d07 and 3cd9c3b92 tested CREATE INDEX CONCURRENTLY by
launching two separate pgbench runs concurrently.  This was needed so
that only a single client thread would run CREATE INDEX CONCURRENTLY,
avoiding deadlock between two CICs.  However, there's a better way,
which is to use an advisory lock to prevent concurrent CICs.  That's
better in part because the test code is shorter and more readable, but
mostly because it automatically scales things to launch an appropriate
number of CICs relative to the number of INSERT transactions.
As committed, typically half to three-quarters of the CIC transactions
were pointless because the INSERT transactions had already stopped.

In passing, remove background_pgbench, which was added to support
these tests and isn't needed anymore.  We can always put it back
if we find a use for it later.

Back-patch to v12; older pgbench versions lack the
conditional-execution features needed for this method.

Tom Lane and Andrey Borodin

Discussion: https://postgr.es/m/139687.1635277318@sss.pgh.pa.us
2021-10-28 11:45:14 -04:00
Michael Paquier da7d0fb159 doc: Fix link to SELinux user guide in sepgsql page
Reported-by: Anton Voloshin
Discussion: https://postgr.es/m/15a86d4e-a237-1acd-18a2-fd69730f1ab9@postgrespro.ru
Backpatch-through: 10
2021-10-28 09:26:13 +09:00
Peter Geoghegan 6cac343396 Fix ordering of items in nbtree error message.
Oversight in commit a5213adf.

Backpatch: 13-, just like commit a5213adf.
2021-10-27 13:09:01 -07:00
Peter Geoghegan d078fe83d5 Further harden nbtree posting split code.
Add more defensive checks around posting list split code.  These should
detect corruption involving duplicate table TIDs earlier and more
reliably than any existing check.

Follow up to commit 8f72bbac.

Discussion: https://postgr.es/m/CAH2-WzkrSY_kjyd1_M5xJK1uM0govJXMxPn8JUSvwcUOiHuWVw@mail.gmail.com
Backpatch: 13-, where nbtree deduplication was introduced.
2021-10-27 12:10:45 -07:00
Magnus Hagander a0b6520ecf Clarify that --system reindexes system catalogs *only*
Make this more clear both in the help message and docs.

Reviewed-By: Michael Paquier
Backpatch-through: 9.6
Discussion: https://postgr.es/m/CABUevEw6Je0WUFTLhPKOk4+BoBuDrE-fKw3N4ckqgDBMFu4paA@mail.gmail.com
2021-10-27 16:28:22 +02:00
Daniel Gustafsson 1ed1f801cd Ensure that slots are zeroed before use
The previous coding relied on the memory for the slots being zeroed
elsewhere, which while it was true in this case is not an contract
which is guaranteed to hold.  Explicitly clear the tts_isnull array
to ensure that the slots are filled from a known state.

Backpatch to v14 where the catalog multi-inserts were introduced.

Reviewed-by: Michael Paquier <michael@paquier.xyz>
Discussion: https://postgr.es/m/CAJ7c6TP0AowkUgNL6zcAK-s5HYsVHVBRWfu69FRubPpfwZGM9A@mail.gmail.com
Backpatch-through: 14
2021-10-26 10:40:08 +02:00
Amit Kapila a6a0ae127e Revert "Remove unused wait events."
This reverts commit 671eb8f344. The removed
wait events are used by some extensions and removal of these would force a
recompile of those extensions. We don't want that for released branches.

Discussion: https://postgr.es/m/E1mdOBY-0005j2-QL@gemulon.postgresql.org
2021-10-26 08:19:33 +05:30
Thomas Munro 181361a0c2 Reject huge_pages=on if shared_memory_type=sysv.
It doesn't work (it could, but hasn't been implemented).
Back-patch to 12, where shared_memory_type arrived.

Reported-by: Alexander Lakhin <exclusion@gmail.com>
Reviewed-by: Alexander Lakhin <exclusion@gmail.com>
Discussion: https://postgr.es/m/163271880203.22789.1125998876173795966@wrigleys.postgresql.org
2021-10-26 13:09:00 +13:00
Noah Misch a5b9a0000e Fix CREATE INDEX CONCURRENTLY for the newest prepared transactions.
The purpose of commit 8a54e12a38 was to
fix this, and it sufficed when the PREPARE TRANSACTION completed before
the CIC looked for lock conflicts.  Otherwise, things still broke.  As
before, in a cluster having used CIC while having enabled prepared
transactions, queries that use the resulting index can silently fail to
find rows.  It may be necessary to reindex to recover from past
occurrences; REINDEX CONCURRENTLY suffices.  Fix this for future index
builds by making CIC wait for arbitrarily-recent prepared transactions
and for ordinary transactions that may yet PREPARE TRANSACTION.  As part
of that, have PREPARE TRANSACTION transfer locks to its dummy PGPROC
before it calls ProcArrayClearTransaction().  Back-patch to 9.6 (all
supported versions).

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

Discussion: https://postgr.es/m/01824242-AA92-4FE9-9BA7-AEBAFFEA3D0C@yandex-team.ru
2021-10-23 18:36:42 -07:00
Noah Misch dde966efb2 Avoid race in RelationBuildDesc() affecting CREATE INDEX CONCURRENTLY.
CIC and REINDEX CONCURRENTLY assume backends see their catalog changes
no later than each backend's next transaction start.  That failed to
hold when a backend absorbed a relevant invalidation in the middle of
running RelationBuildDesc() on the CIC index.  Queries that use the
resulting index can silently fail to find rows.  Fix this for future
index builds by making RelationBuildDesc() loop until it finishes
without accepting a relevant invalidation.  It may be necessary to
reindex to recover from past occurrences; REINDEX CONCURRENTLY suffices.
Back-patch to 9.6 (all supported versions).

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

Discussion: https://postgr.es/m/20210730022548.GA1940096@gust.leadboat.com
2021-10-23 18:36:42 -07:00
Michael Paquier affec9f6a2 doc: Describe calculation method of streaming start for pg_receivewal
The documentation was imprecise about the starting LSN used for WAL
streaming if nothing can be found in the local archive directory
defined with the pg_receivewal command, so be more talkative on this
matter.

Extracted from a larger patch by the same author.

Author: Ronan Dunklau, Michael Paquier
Discussion: https://postgr.es/m/18708360.4lzOvYHigE@aivenronan
Backpatch-through: 10
2021-10-23 14:43:42 +09:00
Tom Lane 8cee4be6dc Fix frontend version of sh_error() in simplehash.h.
The code does not expect sh_error() to return, but the patch
that made this header usable in frontend didn't get that memo.

While here, plaster unlikely() on the tests that decide whether
to invoke sh_error(), and add our standard copyright notice.

Noted by Andres Freund.  Back-patch to v13 where this frontend
support came in.

Discussion: https://postgr.es/m/0D54435C-1199-4361-9D74-2FBDCF8EA164@anarazel.de
2021-10-22 16:43:38 -04:00
Tom Lane 3ad2c2455b pg_dump: fix mis-dumping of non-global default privileges.
Non-global default privilege entries should be dumped as-is,
not made relative to the default ACL for their object type.
This would typically only matter if one had revoked some
on-by-default privileges in a global entry, and then wanted
to grant them again in a non-global entry.

Per report from Boris Korzun.  This is an old bug, so back-patch
to all supported branches.

Neil Chen, test case by Masahiko Sawada

Discussion: https://postgr.es/m/111621616618184@mail.yandex.ru
Discussion: https://postgr.es/m/CAA3qoJnr2+1dVJObNtfec=qW4Z0nz=A9+r5bZKoTSy5RDjskMw@mail.gmail.com
2021-10-22 15:22:25 -04:00
Andrew Dunstan 52c0c11367
Add module build directory to the PATH for TAP tests
For non-MSVC builds this is make's $(CURDIR), while for MSVC builds it
is $topdir/$Config/$module. The directory is added as the second element
in the PATH, so that the install location takes precedence, but the
added PATH element takes precedence over the rest of the PATH.

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

The libpq_pipeline test is adjusted to take advantage of this.

Based on a suggestion from Andres Freund.

Backpatch to release 14.

Discussion: https://postgr.es/m/4941f5a5-2d50-1a0e-6701-14c5fefe92d6@dunslane.net
2021-10-22 09:50:16 -04:00
Amit Kapila 9e84f6a721 Back-patch "Add parent table name in an error in reorderbuffer.c."
This was originally done in commit 5e77625b26 for 15 only, as a
troubleshooting aid but multiple people showed interest in back-patching
this.

Author: Jeremy Schneider
Reviewed-by: Amit Kapila
Backpatch-through: 9.6
Discussion: https://postgr.es/m/808ed65b-994c-915a-361c-577f088b837f@amazon.com
2021-10-21 09:24:59 +05:30
Amit Kapila 671eb8f344 Remove unused wait events.
Commit 464824323e introduced the wait events which were neither used by
that commit nor by follow-up commits for that work.

Author: Masahiro Ikeda
Backpatch-through: 14, where it was introduced
Discussion: https://postgr.es/m/ff077840-3ab2-04dd-bbe4-4f5dfd2ad481@oss.nttdata.com
2021-10-21 08:07:08 +05:30
Michael Paquier 5040c96415 Fix corruption of pg_shdepend when copying deps from template database
Using for a new database a template database with shared dependencies
that need to be copied over was causing a corruption of pg_shdepend
because of an off-by-one computation error of the index number used for
the values inserted with a slot.

Issue introduced by e3931d0.  Monitoring the rest of the code, there are
no similar mistakes.

Reported-by: Sven Klemm
Author: Aleksander Alekseev
Reviewed-by: Daniel Gustafsson, Michael Paquier
Discussion: https://postgr.es/m/CAJ7c6TP0AowkUgNL6zcAK-s5HYsVHVBRWfu69FRubPpfwZGM9A@mail.gmail.com
Backpatch-through: 14
2021-10-21 10:39:07 +09:00
Alvaro Herrera 7182788552
Protect against collation variations in test
Discussion: https://postgr.es/m/YW/MYdSRQZtPFBWR@paquier.xyz
2021-10-20 13:05:42 -03:00
Michael Paquier 81aefaea82 Fix build of MSVC with OpenSSL 3.0.0
The build scripts of Visual Studio would fail to detect properly a 3.0.0
build as the check on the second digit was failing.  This is adjusted
where needed, allowing the builds to complete.  Note that the MSIs of
OpenSSL mentioned in the documentation have not changed any library
names for Win32 and Win64, making this change straight-forward.

Reported-by: htalaco, via github
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/YW5XKYkq6k7OtrFq@paquier.xyz
Backpatch-through: 9.6
2021-10-20 16:48:57 +09:00
Alvaro Herrera 3ce3fb2f7d
Ensure correct lock level is used in ALTER ... RENAME
Commit 1b5d797cd4 intended to relax the lock level used to rename
indexes, but inadvertently allowed *any* relation to be renamed with a
lowered lock level, as long as the command is spelled ALTER INDEX.
That's undesirable for other relation types, so retry the operation with
the higher lock if the relation turns out not to be an index.

After this fix, ALTER INDEX <sometable> RENAME will require access
exclusive lock, which it didn't before.

Author: Nathan Bossart <bossartn@amazon.com>
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Reported-by: Onder Kalaci <onderk@microsoft.com>
Discussion: https://postgr.es/m/PH0PR21MB1328189E2821CDEC646F8178D8AE9@PH0PR21MB1328.namprd21.prod.outlook.com
2021-10-19 19:08:45 -03:00
Andres Freund 533315b68f Adapt src/test/ldap/t/001_auth.pl to work with openldap 2.5.
ldapsearch's deprecated -h/-p arguments were removed, need to use -H now -
which has been around for over 20 years.

As perltidy insists on reflowing the parameters anyway, change order and
"phrasing" to yield a less confusing layout (per suggestion from Tom Lane).

Discussion: https://postgr.es/m/20211009233850.wvr6apcrw2ai6cnj@alap3.anarazel.de
Backpatch: 11-, where the tests were added.
2021-10-19 11:15:45 -07:00
Tom Lane 04dae19f4d Fix assignment to array of domain over composite.
An update such as "UPDATE ... SET fld[n].subfld = whatever"
failed if the array elements were domains rather than plain
composites.  That's because isAssignmentIndirectionExpr()
failed to cope with the CoerceToDomain node that would appear
in the expression tree in this case.  The result would typically
be a crash, and even if we accidentally didn't crash, we'd not
correctly preserve other fields of the same array element.

Per report from Onder Kalaci.  Back-patch to v11 where arrays of
domains came in.

Discussion: https://postgr.es/m/PH0PR21MB132823A46AA36F0685B7A29AD8BD9@PH0PR21MB1328.namprd21.prod.outlook.com
2021-10-19 13:54:45 -04:00
Tom Lane f627fd547a Remove bogus assertion in transformExpressionList().
I think when I added this assertion (in commit 8f889b108), I was only
thinking of the use of transformExpressionList at top level of INSERT
and VALUES.  But it's also called by transformRowExpr(), which can
certainly occur in an UPDATE targetlist, so it's inappropriate to
suppose that p_multiassign_exprs must be empty.  Besides, since the
input is not expected to contain ResTargets, there's no reason it
should contain MultiAssignRefs either.  Hence this code need not
be concerned about the state of p_multiassign_exprs, and we should
just drop the assertion.

Per bug #17236 from ocean_li_996.  It's been wrong for years,
so back-patch to all supported branches.

Discussion: https://postgr.es/m/17236-3210de9bcba1d7ca@postgresql.org
2021-10-19 11:35:15 -04:00
Daniel Gustafsson 3e2f32b01d Fix bug in TOC file error message printing
If the blob TOC file cannot be parsed, the error message was failing
to print the filename as the variable holding it was shadowed by the
destination buffer for parsing.  When the filename fails to parse,
the error will print an empty string:

 ./pg_restore -d foo -F d dump
 pg_restore: error: invalid line in large object TOC file "": ..

..instead of the intended error message:

 ./pg_restore -d foo -F d dump
 pg_restore: error: invalid line in large object TOC file "dump/blobs.toc": ..

Fix by renaming both variables as the shared name was too generic to
store either and still convey what the variable held.

Backpatch all the way down to 9.6.

Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/A2B151F5-B32B-4F2C-BA4A-6870856D9BDE@yesql.se
Backpatch-through: 9.6
2021-10-19 12:59:54 +02:00
Daniel Gustafsson 121be6a665 Fix sscanf limits in pg_basebackup and pg_dump
Make sure that the string parsing is limited by the size of the
destination buffer.

In pg_basebackup the available values sent from the server
is limited to two characters so there was no risk of overflow.

In pg_dump the buffer is bounded by MAXPGPATH, and thus the limit
must be inserted via preprocessor expansion and the buffer increased
by one to account for the terminator. There is no risk of overflow
here, since in this case, the buffer scanned is smaller than the
destination buffer.

Backpatch the pg_basebackup fix to 11 where it was introduced, and
the pg_dump fix all the way down to 9.6.

Reviewed-by: Tom Lane
Discussion: https://postgr.es/m/B14D3D7B-F98C-4E20-9459-C122C67647FB@yesql.se
Backpatch-through: 11 and 9.6
2021-10-19 12:59:50 +02:00
Michael Paquier b1b797ec71 Block ALTER INDEX/TABLE index_name ALTER COLUMN colname SET (options)
The grammar of this command run on indexes with column names has always
been authorized by the parser, and it has never been documented.

Since 911e702, it is possible to define opclass parameters as of CREATE
INDEX, which actually broke the old case of ALTER INDEX/TABLE where
relation-level parameters n_distinct and n_distinct_inherited could be
defined for an index (see 76a47c0 and its thread where this point has
been touched, still remained unused).  Attempting to do that in v13~
would cause the index to become unusable, as there is a new dedicated
code path to load opclass parameters instead of the relation-level ones
previously available.  Note that it is possible to fix things with a
manual catalog update to bring the relation back online.

This commit disables this command for now as the use of column names for
indexes does not make sense anyway, particularly when it comes to index
expressions where names are automatically computed.  One way to properly
support this case properly in the future would be to use column numbers
when it comes to indexes, in the same way as ALTER INDEX .. ALTER COLUMN
.. SET STATISTICS.

Partitioned indexes were already blocked, but not indexes.  Some tests
are added for both cases.

There was some code in ANALYZE to enforce n_distinct to be used for an
index expression if the parameter was defined, but just remove it for
now until/if there is support for this (note that index-level parameters
never had support in pg_dump either, previously), so this was just dead
code.

Reported-by: Matthijs van der Vleuten
Author: Nathan Bossart, Michael Paquier
Reviewed-by: Vik Fearing, Dilip Kumar
Discussion: https://postgr.es/m/17220-15d684c6c2171a83@postgresql.org
Backpatch-through: 13
2021-10-19 11:04:00 +09:00
Alvaro Herrera 72d0642172
Invalidate partitions of table being attached/detached
Failing to do that, any direct inserts/updates of those partitions
would fail to enforce the correct constraint, that is, one that
considers the new partition constraint of their parent table.

Backpatch to 10.

Reported by: Hou Zhijie <houzj.fnst@fujitsu.com>
Author: Amit Langote <amitlangote09@gmail.com>
Author: Álvaro Herrera <alvherre@alvh.no-ip.org>
Reviewed-by: Nitin Jadhav <nitinjadhavpostgres@gmail.com>
Reviewed-by: Pavel Borisov <pashkin.elfe@gmail.com>

Discussion: https://postgr.es/m/OS3PR01MB5718DA1C4609A25186D1FBF194089%40OS3PR01MB5718.jpnprd01.prod.outlook.com
2021-10-18 19:08:25 -03:00
Michael Paquier 5b353aaff6 Reset properly snapshot export state during transaction abort
During a replication slot creation, an ERROR generated in the same
transaction as the one creating a to-be-exported snapshot would have
left the backend in an inconsistent state, as the associated static
export snapshot state was not being reset on transaction abort, but only
on the follow-up command received by the WAL sender that created this
snapshot on replication slot creation.  This would trigger inconsistency
failures if this session tried to export again a snapshot, like during
the creation of a replication slot.

Note that a snapshot export cannot happen in a transaction block, so
there is no need to worry resetting this state for subtransaction
aborts.  Also, this inconsistent state would very unlikely show up to
users.  For example, one case where this could happen is an
out-of-memory error when building the initial snapshot to-be-exported.
Dilip found this problem while poking at a different patch, that caused
an error in this code path for reasons unrelated to HEAD.

Author: Dilip Kumar
Reviewed-by: Michael Paquier, Zhihong Yu
Discussion: https://postgr.es/m/CAFiTN-s0zA1Kj0ozGHwkYkHwa5U0zUE94RSc_g81WrpcETB5=w@mail.gmail.com
Backpatch-through: 9.6
2021-10-18 11:56:48 +09:00
Tom Lane 3e4c8db931 Avoid core dump in pg_dump when dumping from pre-8.3 server.
Commit f0e21f2f6 missed adding a tgisinternal output column
to getTriggers' query for pre-8.3 servers.  Back-patch to v11,
like that commit.
2021-10-16 15:03:05 -04:00
Tom Lane b5152e3ba6 Make pg_dump acquire lock on partitioned tables that are to be dumped.
It was clearly the intent to do so all along, but the original coding
fat-fingered this by checking the wrong array element.  We fixed it
in passing in 403a3d91c, but that later got reverted, and we forgot
to keep this bug fix.

Most of the time this'd be relatively harmless, since once we lock
any of the partitioned table's leaf partitions, that would suffice
to prevent major DDL on the partitioned table itself.  However, a
childless partitioned table would get dumped with no relevant lock
whatsoever, possibly allowing dump failure or inconsistent output.

Unlike 403a3d91c, there are no versioning concerns, since every server
version that has partitioned tables will allow you to lock one.

Back-patch to v10 where partitioned tables were introduced.

Discussion: https://postgr.es/m/1018205.1634346327@sss.pgh.pa.us
2021-10-16 12:24:11 -04:00
Andrew Dunstan c697d8a39b
Fix PostgresNode install_path sanity tests that fail on Windows
Backpatch to 14 where install_path was introduced.
2021-10-15 12:58:17 -04:00
Peter Geoghegan 5863115e4c Remove unstable pg_amcheck tests.
Recent pg_amcheck bugfix commit d2bf06db added a test case that the
buildfarm has shown to be non-portable.  It doesn't particularly seem
worth keeping anyway.  Remove it.

Discussion: https://postgr.es/m/CAH2-Wz=7HKJ9WzAh7+M0JfwJ1yfT9qoE+KPa3P7iGToPOtGhXg@mail.gmail.com
Backpatch: 14-, just like the original commit.
2021-10-14 14:50:25 -07:00
Jeff Davis 0b90f1c4c3 Check criticalSharedRelcachesBuilt in GetSharedSecurityLabel().
An extension may want to call GetSecurityLabel() on a shared object
before the shared relcaches are fully initialized. For instance, a
ClientAuthentication_hook might want to retrieve the security label on
a role.

Discussion: https://postgr.es/m/ecb7af0b26e3be1d96d291c8453a86f1f82d9061.camel@j-davis.com
Backpatch-through: 9.6
2021-10-14 12:24:22 -07:00
Tom Lane fd059ac2e4 Fix planner error with pulling up subquery expressions into function RTEs.
If a function-in-FROM laterally references the output of some sub-SELECT
earlier in the FROM clause, and we are able to flatten that sub-SELECT
into the outer query, the expression(s) copied into the function RTE
missed being processed by eval_const_expressions.  This'd lead to trouble
and probable crashes at execution if such expressions contained
named-argument function call syntax or functions with defaulted arguments.
The bug is masked if the query contains any explicit JOIN syntax, which
may help explain why we'd not noticed.

Per bug #17227 from Bernd Dorn.  This is an oversight in commit 7266d0997,
so back-patch to v13 where that came in.

Discussion: https://postgr.es/m/17227-5a28ed1512189fa4@postgresql.org
2021-10-14 12:43:43 -04:00
Alvaro Herrera 79c7fe1af8
Change recently added test code for stability
The test code added with ff9f111bce fails under valgrind, and probably
other slow cases too, because if (say) autovacuum runs in between and
produces WAL of its own, the large INSERT fails to account for that in
the LSN calculations.  Rewrite to use a DO loop.

Per complaint from Andres Freund

Backpatch to all branches.

Discussion: https://postgr.es/m/20211013180338.5guyqzpkcisqugrl@alap3.anarazel.de
2021-10-13 18:49:27 -03:00
Peter Geoghegan dd58194cf5 pg_amcheck: avoid unhelpful verification attempts.
Avoid calling contrib/amcheck functions with relations that are
unsuitable for checking.  Specifically, don't attempt verification of
temporary relations, or indexes whose pg_index entry indicates that the
index is invalid, or not ready.

These relations are not supported by any of the contrib/amcheck
functions, for reasons that are pretty fundamental.  For example, the
implementation of REINDEX CONCURRENTLY can add its own "transient"
pg_index entries, which has rather unclear implications for the B-Tree
verification functions, at least in the general case -- so they just
treat it as an error.  It falls to the amcheck caller (in this case
pg_amcheck) to deal with the situation at a higher level.

pg_amcheck now simply treats these conditions as additional "visibility
concerns" when it queries system catalogs.  This is a little arbitrary.
It seems to have the least problems among any of the available
alternatives.

Author: Mark Dilger <mark.dilger@enterprisedb.com>
Reported-By: Alexander Lakhin <exclusion@gmail.com>
Reviewed-By: Peter Geoghegan <pg@bowt.ie>
Reviewed-By: Robert Haas <robertmhaas@gmail.com>
Bug: #17212
Discussion: https://postgr.es/m/17212-34dd4a1d6bba98bf@postgresql.org
Backpatch: 14-, where pg_amcheck was introduced.
2021-10-13 14:08:11 -07:00
Etsuro Fujita 419d27b1a2 postgres_fdw: Move comments about elog level in (sub)abort cleanup.
The comments were misplaced when adding postgres_fdw.  Fix that by
moving the comments to more appropriate functions.

Author: Etsuro Fujita
Backpatch-through: 9.6
Discussion: https://postgr.es/m/CAPmGK164sAXQtC46mDFyu6d-T25Mzvh5qaRNkit06VMmecYnOA%40mail.gmail.com
2021-10-13 19:00:01 +09:00
Michael Paquier 922e15c476 Fix use-after-free with multirange types in CREATE TYPE
The code was freeing the name of the multirange type function stored in
the parse tree but it should not do that.  Event triggers could for
example look at such a corrupted parsed tree with a ddl_command_end
event.

Author: Alex Kozhemyakin, Sergey Shinderuk
Reviewed-by: Peter Eisentraut, Michael Paquier
Discussion: https://postgr.es/m/d5042d46-b9cd-6efb-219a-71ed0cf45bc8@postgrespro.ru
Backpatch-through: 14
2021-10-13 16:38:15 +09:00
Michael Paquier f4e1c8892b Fix tests of pg_upgrade across different major versions
This fixes a set of issues that cause different breakages or annoyances
when using pg_upgrade's test.sh to do upgrades across different major
versions:
- test.sh is completely broken when using v14 as new version because of
the removal of testtablespace/ as Makefile rule.  Older versions of
pg_regress don't support --make-tablespacedir, blocking the creation of
the tablespace.  In order to fix that, it is simple enough to create
those directories in the script itself, but only do that when an old
version is involved.  This fix is needed on HEAD and REL_14_STABLE.
- The script would fail when using PG <= v11 as old version because of
WITH OIDS relations not supported in v12.  In order to fix this, this
steals a method from the buildfarm that uses a DO block to change all
the relations marked as WITH OIDS, allowing pg_upgrade to pass.  This is
more portable than using ALTER TABLE queries on the relations causing
issues.  This is fixed down to v12, and authored originally by Andrew
Dunstan.
- Not using --extra-float-digits=0 with v11 as old version causes
a lot of diffs in the dumps, making the whole unreadable.  This gets
only done when using v11 as old version.  This is fixed down to v12.
The buildfarm code uses that already.

Note that the addition of --wal-segsize and --allow-group-access breaks
the script when using v10 or older at initdb time as these got added in
11.  10 would be EOL'd next year and nobody has complained about those
problems yet, so nothing is done about that.  This means that this
commit fixes upgrade tests using test.sh with v11 as minimum older
version, up to HEAD, and that it is enough to apply this change down to
12.  The old and new dumps still generate diffs, still require manual
checks, and more could be done to reduce the noise, but this allows the
tests to run with a rather minimal amount of them.

I have tested this commit and test.sh with v11 as minimum across all the
branches where this is applied.  Note that this commit has no impact on
the normal pg_upgrade test run with a simple "make check".

Author:  Justin Pryzby, Andrew Dunstan, Michael Paquier
Discussion: https://postgr.es/m/20201206180248.GI24052@telsasoft.com
Backpatch-through: 12
2021-10-13 09:22:23 +09:00
Peter Geoghegan 070c402b4a Doc: normalize vacuum_multixact_failsafe_age ID.
Author: Pavel Luzanov <p.luzanov@postgrespro.ru>
Discussion: https://postgr.es/m/c71a3cfc-a267-3d9f-1b44-fbd668d0ab10@postgrespro.ru
Backpatch: 14-, where the failsafe was introduced.
2021-10-12 10:59:22 -07:00