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ATTACHing a table into a partition tree whose root is published using a
publication with publish_via_partition_root set to true does not result in
the table's existing contents being replicated. This happens because
subscriber doesn't consider replicating the newly attached partition as
the root table is already in a 'ready' state.
This behavior was introduced in PG13 (83fd4532a7) where we allowed to
publish partition changes via ancestors.
We can consider fixing this limitation in the future.
Author: Amit Langote
Reviewed-by: Hou Zhijie, Amit Kapila
Backpatch-through: 13
Discussion: https://postgr.es/m/OS0PR01MB5716E97F00732B52DC2BBC2594989@OS0PR01MB5716.jpnprd01.prod.outlook.com
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Remove the confusing use of ORDER BY in an example materialized
view. It adds nothing to the example, but might encourage
people to follow bad practice. Clarify REFRESH MATERIALIZED
VIEW's note about whether view ordering is retained (it isn't).
Maciek Sakrejda
Discussion: https://postgr.es/m/CAOtHd0D-OvrUU0C=4hX28p4BaSE1XL78BAQ0VcDaLLt8tdUzsg@mail.gmail.com
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The doc blurb failed to mention units, as well as lacking the point
about changeability.
Backpatch to 13.
Reviewed-by: Kyotaro Horiguchi <horikyota.ntt@gmail.com>
Reported by: b1000101@pm.me
Discussion: https://postgr.es/m/163760291192.26193.10801700492025355788@wrigleys.postgresql.org
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Clarify that the results of nextval and setval are not guaranteed
persistent until the calling transaction commits. Some people
seem to have drawn the opposite conclusion from the statement that
these functions are never rolled back, so re-word to avoid saying
it quite that way.
Discussion: https://postgr.es/m/CAKU4AWohO=NfM-4KiZWvdc+z3c1C9FrUBR6xnReFJ6sfy0i=Lw@mail.gmail.com
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Author: Japin Li
Discussion: https://www.postgresql.org/message-id/MEYP282MB1669C36E5F733C2EFBDCB80BB6619@MEYP282MB1669.AUSP282.PROD.OUTLOOK.COM
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Documentation and any code paths related to VS are updated to keep the
whole consistent. Similarly to 2017 and 2019, the version of VS and the
version of nmake that we use to determine which code paths to use for
the build are still inconsistent in their own way.
Backpatch down to 10, so as buildfarm members are able to use this new
version of Visual Studio on all the stable branches supported.
Author: Hans Buschmann
Discussion: https://postgr.es/m/1633101364685.39218@nidsa.net
Backpatch-through: 10
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The "See also" section on the reference page for CREATE PUBLICATION
didn't match the cross references on CREATE SUBSCRIPTION and their
ALTER counterparts. Fixed by adding an xref to the CREATE and ALTER
SUBSCRIPTION pages. Backpatch down to v10 where CREATE PUBLICATION
was introduced.
Author: Peter Smith <smithpb2250@gmail.com>
Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com>
Discussion: https://postgr.es/m/CAHut+PvGWd3-Ktn96c-z6uq-8TGVVP=TPOkEovkEfntoo2mRhw@mail.gmail.com
Backpatch-through: 10
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protocol.sgml documented the layout for Type messages, but completely
dropped the ball otherwise, failing to explain what they are, when
they are sent, or what they're good for. While at it, do a little
copy-editing on the description of Relation messages.
In passing, adjust the comment for apply_handle_type() to make it
clearer that we choose not to do anything when receiving a Type
message, not that we think it has no use whatsoever.
Per question from Stefen Hillman.
Discussion: https://postgr.es/m/CAPgW8pMknK5pup6=T4a_UG=Cz80Rgp=KONqJmTdHfaZb0RvnFg@mail.gmail.com
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Security: CVE-2021-23214, CVE-2021-23222
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libpq collects up to a bufferload of data whenever it reads data from
the socket. When SSL or GSS encryption is requested during startup,
any additional data received with the server's yes-or-no reply
remained in the buffer, and would be treated as already-decrypted data
once the encryption handshake completed. Thus, a man-in-the-middle
with the ability to inject data into the TCP connection could stuff
some cleartext data into the start of a supposedly encryption-protected
database session.
This could probably be abused to inject faked responses to the
client's first few queries, although other details of libpq's behavior
make that harder than it sounds. A different line of attack is to
exfiltrate the client's password, or other sensitive data that might
be sent early in the session. That has been shown to be possible with
a server vulnerable to CVE-2021-23214.
To fix, throw a protocol-violation error if the internal buffer
is not empty after the encryption handshake.
Our thanks to Jacob Champion for reporting this problem.
Security: CVE-2021-23222
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Add latest commits. Fix some typos and infelicitous wording
(thanks to Justin Pryzby for proof-reading).
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As usual, the release notes for other branches will be made by cutting
these down, but put them up for community review first.
Also as usual for a .1 release, there are some entries here that
are not really relevant for v14 because they already appeared in 14.0.
Those'll be removed later.
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... so mention that in appropriate places of the libpq docs.
Backpatch to 14.
Reported-by: RekGRpth <rekgrpth@gmail.com>
Discussion: https://postgr.es/m/17235-53bb38fc5be593dc@postgresql.org
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Reported-by: Anton Voloshin
Discussion: https://postgr.es/m/15a86d4e-a237-1acd-18a2-fd69730f1ab9@postgrespro.ru
Backpatch-through: 10
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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
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This reverts commit 671eb8f34404d24c8f16ae40e94becb38afd93bb. 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
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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
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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
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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
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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.
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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.
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queries.sgml failed to mention the rather important point that
INTERSECT binds more tightly than UNION or EXCEPT. I thought
it could also use more discussion of the role of parentheses
in these constructs.
Per gripe from Christopher Painter-Wakefield.
Discussion: https://postgr.es/m/163338891727.12510.3939775743980651160@wrigleys.postgresql.org
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The old URL was HTTP 404 and the git link didn't build. Also update two
other ICU links. If we ever get a good link we will add it back.
Reported-by: Anton Voloshin
Author: Laurenz Albe
Backpatch-through: 10
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gist.sgml and xindex.sgml hadn't been fully updated for the
addition of a sortsupport support function (commit 16fa9b2b3).
xindex.sgml also missed that the compress and decompress support
functions are optional, an apparently far older oversight.
In passing, fix gratuitous inconsistencies in wording and
capitalization.
Noted by E. Rogov. Back-patch to v14; the residual issues
before that aren't significant enough to bother with.
Discussion: https://postgr.es/m/163335322905.12519.5711557029494638051@wrigleys.postgresql.org
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Prior to v14, we insisted that the query in RETURN QUERY be of a type
that returns tuples. (For instance, INSERT RETURNING was allowed,
but not plain INSERT.) That happened indirectly because we opened a
cursor for the query, so spi.c checked SPI_is_cursor_plan(). As a
consequence, the error message wasn't terribly on-point, but at least
it was there.
Commit 2f48ede08 lost this detail. Instead, plain RETURN QUERY
insisted that the query be a SELECT (by checking for SPI_OK_SELECT)
while RETURN QUERY EXECUTE failed to check the query type at all.
Neither of these changes was intended.
The only convenient place to check this in the EXECUTE case is inside
_SPI_execute_plan, because we haven't done parse analysis until then.
So we need to pass down a flag saying whether to enforce that the
query returns tuples. Fortunately, we can squeeze another boolean
into struct SPIExecuteOptions without an ABI break, since there's
padding space there. (It's unlikely that any extensions would
already be using this new struct, but preserving ABI in v14 seems
like a smart idea anyway.)
Within spi.c, it seemed like _SPI_execute_plan's parameter list
was already ridiculously long, and I didn't want to make it longer.
So I thought of passing SPIExecuteOptions down as-is, allowing that
parameter list to become much shorter. This makes the patch a bit
more invasive than it might otherwise be, but it's all internal to
spi.c, so that seems fine.
Per report from Marc Bachmann. Back-patch to v14 where the
faulty code came in.
Discussion: https://postgr.es/m/1F2F75F0-27DF-406F-848D-8B50C7EEF06A@gmail.com
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Both bugs #16676[1] and #17141[2] illustrate that the combination of
SKIP LOCKED and FETCH FIRST WITH TIES break expectations when it comes
to rows returned to other sessions accessing the same row. Since this
situation is detectable from the syntax and hard to fix otherwise,
forbid for now, with the potential to fix in the future.
[1] https://postgr.es/m/16676-fd62c3c835880da6@postgresql.org
[2] https://postgr.es/m/17141-913d78b9675aac8e@postgresql.org
Backpatch-through: 13, where WITH TIES was introduced
Author: David Christensen <david.christensen@crunchydata.com>
Discussion: https://postgr.es/m/CAOxo6XLPccCKru3xPMaYDpa+AXyPeWFs+SskrrL+HKwDjJnLhg@mail.gmail.com
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section.
Commit 9868167500 added pg_stat_replication_slots view to monitor
ReorderBuffer stats but mistakenly added it under
"Dynamic Statistics Views" section in the docs whereas it belongs to
"Collected Statistics Views" section.
Author: Amit Kapila
Reviewed-by: Masahiko Sawada
Backpatch-through: 14, where it was introduced
Discussion: https://postgr.es/m/CAA4eK1Kb5ur=OC-G4cAsqPOjoVe+S8LNw1WmUY8Owasjk8o5WQ@mail.gmail.com
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Reported-by: Simon Riggs (privately)
Backpatch-through: 14 only
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Author: Ekaterina Kiryanova
Discussion: https://postgr.es/m/8a14e78f-6991-7a6e-4711-fe376635f2ad@postgrespro.ru
Backpatch-through: 14
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Backpatch-through: 14 only
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current through e8b39cebdaf042dfeeb31d2f48f0fe7b33886210
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Author: Justin Pryzby
Discussion: https://postgr.es/m/20210924215827.GS831@telsasoft.com
Backpatch-through: 9.6
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Add the customary short list of major features. Set release date.
Discussion: https://postgr.es/m/1489855.1631986639@sss.pgh.pa.us
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Be a little more vocal about the risks of remote collations not
matching local ones. Actually fixing these risks seems hard,
and I've given up on the idea that it might be back-patchable.
So the best we can do for the back branches is add documentation.
Per discussion of bug #16583 from Jiří Fejfar.
Discussion: https://postgr.es/m/2438715.1632510693@sss.pgh.pa.us
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OpenSSL 3 introduced the concept of providers to support modularization,
and moved the outdated ciphers to the new legacy provider. In case it's
not loaded in the users openssl.cnf file there will be a lot of regress
test failures, so add alternative outputs covering those.
Also document the need to load the legacy provider in order to use older
ciphers with OpenSSL-enabled pgcrypto.
This will be backpatched to all supported version once there is sufficient
testing in the buildfarm of OpenSSL 3.
Reviewed-by: Michael Paquier
Discussion: https://postgr.es/m/FEF81714-D479-4512-839B-C769D2605F8A@yesql.se
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Index vacuums may happen multiple times depending on the number of dead
tuples stored, as of maintenance_work_mem for a manual VACUUM. For
autovacuum, this is controlled by autovacuum_work_mem instead, if set.
The documentation mentioned the former, but not the latter in the
context of autovacuum.
Reported-by: Nikolai Berkoff
Author: Laurenz Albe, Euler Taveira
Discussion: https://postgr.es/m/161545365522.10134.12195402324485546870@wrigleys.postgresql.org
Backpatch-through: 9.6
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Reported-by: rir
Discussion: https://postgr.es/m/20210924183658.3syyitp3yuxjv2fp@localhost
Backpatch-through: 9.6
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A few characters in the acknowledgments list cannot be handled by the
PDF build, so replace with a similar ASCII character.
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current through 66061077155d68463ec00604ba7d6f0ae69716e8
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A recent question reminded me that the notes' description of
commit 86dc90056 rather undersold its benefits.
Discussion: https://postgr.es/m/4a3115d4-0fb2-e214-93e3-9a9d0974b883@deepbluecap.com
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"PGcon" should be "PGconn". Noted by D. Frey.
Discussion: https://postgr.es/m/163191739352.4680.16994248583642672629@wrigleys.postgresql.org
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Improve various item descriptions. Rearrange some things into
(IMO) more logical order. Fix missing markup and dubious
choices of link destinations. Drop a couple of items that
were later back-patched or otherwise don't seem to need
to be documented here.
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Account for recent commits, notably reversion of 0827e8af7.
Strip trailing spaces.
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The available refresh options are specified as refresh_options under
REFRESH PUBLICATION, and DROP PUBLICATION itself has an option named
refresh. Clarify what we mean by refresh options to avoid confusion.
Backpatch through v14 where ALTER SUBSCRIPTION ... DROP PUBLICATION
was introduced.
Author: Masahiko Sawada <sawada.mshk@gmail.com>
Reviewed-by: Amit Kapila <amit.kapila16@gmail.com>
Reviewed-by: Peter Eisentraut <peter.eisentraut@enterprisedb.com>
Reviewed-by: Peter Smith <smithpb2250@gmail.com>
Discussion: https://postgr.es/m/CAD21AoCm1wJ3A8Q9EmBjRbShYkJ+o+Oa_z9O0hvwhvhUa2BSyg@mail.gmail.com
Backpatch-through: 14
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Formerly, we sent signals for outgoing NOTIFY messages within
ProcessCompletedNotifies, which was also responsible for sending
relevant ones of those messages to our connected client. It therefore
had to run during the main-loop processing that occurs just before
going idle. This arrangement had two big disadvantages:
* Now that procedures allow intra-command COMMITs, it would be
useful to send NOTIFYs to other sessions immediately at COMMIT
(though, for reasons of wire-protocol stability, we still shouldn't
forward them to our client until end of command).
* Background processes such as replication workers would not send
NOTIFYs at all, since they never execute the client communication
loop. We've had requests to allow triggers running in replication
workers to send NOTIFYs, so that's a problem.
To fix these things, move transmission of outgoing NOTIFY signals
into AtCommit_Notify, where it will happen during CommitTransaction.
Also move the possible call of asyncQueueAdvanceTail there, to
ensure we don't bloat the async SLRU if a background worker sends
many NOTIFYs with no one listening.
We can also drop the call of asyncQueueReadAllNotifications,
allowing ProcessCompletedNotifies to go away entirely. That's
because commit 790026972 added a call of ProcessNotifyInterrupt
adjacent to PostgresMain's call of ProcessCompletedNotifies,
and that does its own call of asyncQueueReadAllNotifications,
meaning that we were uselessly doing two such calls (inside two
separate transactions) whenever inbound notify signals coincided
with an outbound notify. We need only set notifyInterruptPending
to ensure that ProcessNotifyInterrupt runs, and we're done.
The existing documentation suggests that custom background workers
should call ProcessCompletedNotifies if they want to send NOTIFY
messages. To avoid an ABI break in the back branches, reduce it
to an empty routine rather than removing it entirely. Removal
will occur in v15.
Although the problems mentioned above have existed for awhile,
I don't feel comfortable back-patching this any further than v13.
There was quite a bit of churn in adjacent code between 12 and 13.
At minimum we'd have to also backpatch 51004c717, and a good deal
of other adjustment would also be needed, so the benefit-to-risk
ratio doesn't look attractive.
Per bug #15293 from Michael Powers (and similar gripes from others).
Artur Zakirov and Tom Lane
Discussion: https://postgr.es/m/153243441449.1404.2274116228506175596@wrigleys.postgresql.org
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Reported-by: Robert Haas
Backpatch-through: 14 only
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The type information for FDW options is only added to HEAD; remove this
from back branches. Oversight in commit aa769f80e.
Apply the patch to v12, v13, and v14.
Discussion: https://postgr.es/m/CAPmGK14z92twaKwRoccHbbh5Va5vbRDZcTYYTx50+0JTQ8xx_g@mail.gmail.com
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This affects one message and some documentation that used the format
"read only", unlike everything else that used read-only.
Backpatch-through: 14
Discussion: https://postgr.es/m/CABUevExuxKwn0YM3+wdSeQSvK6CRrJ-hewocGVX3R4-xVX4eMw@mail.gmail.com
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This makes the documentation more accurate grammatically.
Author: Elena Indrupskaya
Discussion: https://postgr.es/m/1c994b3d-951e-59bb-1ac2-7b9221c0e4cf@postgrespro.ru
Backpatch-through: 9.6
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