Tom Lane [Sat, 19 Dec 2015 21:55:14 +0000 (16:55 -0500)]
Add missing COSTS OFF to EXPLAIN commands in rowsecurity.sql.
Commit
e5e11c8cc added a bunch of EXPLAIN statements without COSTS OFF
to the regression tests. This is contrary to project policy since it
results in unnecessary platform dependencies in the output (it's just
luck that we didn't get buildfarm failures from it). Per gripe from
Mike Wilson.
Andres Freund [Sat, 19 Dec 2015 16:37:11 +0000 (17:37 +0100)]
Fix tab completion for ALTER ... TABLESPACE ... OWNED BY.
Previously the completion used the wrong word to match 'BY'. This was
introduced brokenly, in b2de2a. While at it, also add completion of
IN TABLESPACE ... OWNED BY and fix comments referencing nonexistent
syntax.
Reported-By: Michael Paquier
Author: Michael Paquier and Andres Freund
Discussion: CAB7nPqSHDdSwsJqX0d2XzjqOHr==HdWiubCi4L=Zs7YFTUne8w@mail.gmail.com
Backpatch: 9.4, like the commit introducing the bug
Robert Haas [Fri, 18 Dec 2015 18:24:51 +0000 (13:24 -0500)]
pgbench: Change terminology from "threshold" to "parameter".
Per a recommendation from Tomas Vondra, it's more helpful to refer to
the value that determines how skewed a Gaussian or exponential
distribution is as a parameter rather than a threshold.
Since it's not quite too late to get this right in 9.5, where it was
introduced, back-patch this. Most of the patch changes only comments
and documentation, but a few pgbench messages are altered to match.
Fabien Coelho, reviewed by Michael Paquier and by me.
Robert Haas [Fri, 18 Dec 2015 17:17:35 +0000 (12:17 -0500)]
Fix copy-and-paste error in logical decoding callback.
This could result in the error context misidentifying where the error
actually occurred.
Craig Ringer
Tom Lane [Fri, 18 Dec 2015 01:21:42 +0000 (20:21 -0500)]
Remove unreferenced function declarations.
datapagemap_create() and datapagemap_destroy() were declared extern,
but they don't actually exist anywhere. Per YUriy Zhuravlev and
Michael Paquier.
Tom Lane [Thu, 17 Dec 2015 21:55:23 +0000 (16:55 -0500)]
Fix improper initialization order for readline.
Turns out we must set rl_basic_word_break_characters *before* we call
rl_initialize() the first time, because it will quietly copy that value
elsewhere --- but only on the first call. (Love these undocumented
dependencies.) I broke this yesterday in commit
2ec477dc8108339d;
like that commit, back-patch to all active branches. Per report from
Pavel Stehule.
Alvaro Herrera [Thu, 17 Dec 2015 17:25:41 +0000 (14:25 -0300)]
Rework internals of changing a type's ownership
This is necessary so that REASSIGN OWNED does the right thing with
composite types, to wit, that it also alters ownership of the type's
pg_class entry -- previously, the pg_class entry remained owned by the
original user, which caused later other failures such as the new owner's
inability to use ALTER TYPE to rename an attribute of the affected
composite. Also, if the original owner is later dropped, the pg_class
entry becomes owned by a non-existant user which is bogus.
To fix, create a new routine AlterTypeOwner_oid which knows whether to
pass the request to ATExecChangeOwner or deal with it directly, and use
that in shdepReassignOwner rather than calling AlterTypeOwnerInternal
directly. AlterTypeOwnerInternal is now simpler in that it only
modifies the pg_type entry and recurses to handle a possible array type;
higher-level tasks are handled by either AlterTypeOwner directly or
AlterTypeOwner_oid.
I took the opportunity to add a few more objects to the test rig for
REASSIGN OWNED, so that more cases are exercised. Additional ones could
be added for superuser-only-ownable objects (such as FDWs and event
triggers) but I didn't want to push my luck by adding a new superuser to
the tests on a backpatchable bug fix.
Per bug #13666 reported by Chris Pacejo.
Backpatch to 9.5.
(I would back-patch this all the way back, except that it doesn't apply
cleanly in 9.4 and earlier because
59367fdf9 wasn't backpatched. If we
decide that we need this in earlier branches too, we should backpatch
both.)
Tom Lane [Wed, 16 Dec 2015 21:58:55 +0000 (16:58 -0500)]
Cope with Readline's failure to track SIGWINCH events outside of input.
It emerges that libreadline doesn't notice terminal window size change
events unless they occur while collecting input. This is easy to stumble
over if you resize the window while using a pager to look at query output,
but it can be demonstrated without any pager involvement. The symptom is
that queries exceeding one line are misdisplayed during subsequent input
cycles, because libreadline has the wrong idea of the screen dimensions.
The safest, simplest way to fix this is to call rl_reset_screen_size()
just before calling readline(). That causes an extra ioctl(TIOCGWINSZ)
for every command; but since it only happens when reading from a tty, the
performance impact should be negligible. A more valid objection is that
this still leaves a tiny window during entry to readline() wherein delivery
of SIGWINCH will be missed; but the practical consequences of that are
probably negligible. In any case, there doesn't seem to be any good way to
avoid the race, since readline exposes no functions that seem safe to call
from a generic signal handler --- rl_reset_screen_size() certainly isn't.
It turns out that we also need an explicit rl_initialize() call, else
rl_reset_screen_size() dumps core when called before the first readline()
call.
rl_reset_screen_size() is not present in old versions of libreadline,
so we need a configure test for that. (rl_initialize() is present at
least back to readline 4.0, so we won't bother with a test for it.)
We would need a configure test anyway since libedit's emulation of
libreadline doesn't currently include such a function. Fortunately,
libedit seems not to have any corresponding bug.
Merlin Moncure, adjusted a bit by me
Tom Lane [Tue, 15 Dec 2015 22:25:44 +0000 (17:25 -0500)]
Stamp 9.5rc1.
Tom Lane [Tue, 15 Dec 2015 21:57:23 +0000 (16:57 -0500)]
Document use of Subject Alternative Names in SSL server certificates.
Commit
acd08d764 did not bother with updating the documentation.
Tom Lane [Tue, 15 Dec 2015 21:42:18 +0000 (16:42 -0500)]
Update 9.5 release notes through today.
Also do another round of copy-editing, and fix up remaining FIXME items.
Stephen Frost [Tue, 15 Dec 2015 15:08:14 +0000 (10:08 -0500)]
Improve CREATE POLICY documentation
Clarify that SELECT policies are now applied when SELECT rights
are required for a given query, even if the query is an UPDATE or
DELETE query. Pointed out by Noah.
Additionally, note the risk regarding concurrently open transactions
where a relation which controls access to the rows of another relation
are updated and the rows of the primary relation are also being
modified. Pointed out by Peter Geoghegan.
Back-patch to 9.5.
Stephen Frost [Tue, 15 Dec 2015 01:05:55 +0000 (20:05 -0500)]
Collect the global OR of hasRowSecurity flags for plancache
We carry around information about if a given query has row security or
not to allow the plancache to use that information to invalidate a
planned query in the event that the environment changes.
Previously, the flag of one of the subqueries was simply being copied
into place to indicate if the query overall included RLS components.
That's wrong as we need the global OR of all subqueries. Fix by
changing the code to match how fireRIRules works, which is results
in OR'ing all of the flags.
Noted by Tom.
Back-patch to 9.5 where RLS was introduced.
Tom Lane [Tue, 15 Dec 2015 00:22:50 +0000 (19:22 -0500)]
Add missing cleanup logic in pg_rewind/t/005_same_timeline.pl test.
Per Michael Paquier
Tom Lane [Mon, 14 Dec 2015 23:21:42 +0000 (18:21 -0500)]
pg_rewind: Don't error if the two clusters are already on the same timeline
This previously resulted in an error and a nonzero exit status, but
after discussion this should rather be a noop with a zero exit status.
This is a back-patch of commit
6b34e5563849edc12896bf5754e8fe7b88012697,
plus two changes from commit
e50cda78404d6400b1326a996a4fabb144871151
that teach pg_rewind to allow the initial control file states to be
DB_SHUTDOWNED_IN_RECOVERY as well as DB_SHUTDOWNED. That's necessary
to get the additional regression test case to pass, and the old behavior
seems like rather a foot-gun anyway.
Peter Eisentraut and Tom Lane
Alvaro Herrera [Mon, 14 Dec 2015 19:44:40 +0000 (16:44 -0300)]
Add missing CHECK_FOR_INTERRUPTS in lseg_inside_poly
Apparently, there are bugs in this code that cause it to loop endlessly.
That bug still needs more research, but in the meantime it's clear that
the loop is missing a check for interrupts so that it can be cancelled
timely.
Backpatch to 9.1 -- this has been missing since
49475aab8d0d.
Kevin Grittner [Mon, 14 Dec 2015 17:46:47 +0000 (11:46 -0600)]
Remove xmlparse(document '') test
This one test was behaving differently between the ubuntu fix for
CVE-2015-7499 and the base "expected" file. It's not worth having
yet another version of the expected file for this test, so drop it.
Perhaps at some point when all distros have settled down to the
same behavior on this test, it can be restored.
Problem found by me on libxml2 (2.9.1+dfsg1-3ubuntu4.6).
Solution suggested by Tom Lane.
Backpatch to 9.5, where the test was added.
Heikki Linnakangas [Mon, 14 Dec 2015 16:19:10 +0000 (18:19 +0200)]
Fix out-of-memory error handling in ParameterDescription message processing.
If libpq ran out of memory while constructing the result set, it would hang,
waiting for more data from the server, which might never arrive. To fix,
distinguish between out-of-memory error and not-enough-data cases, and give
a proper error message back to the client on OOM.
There are still similar issues in handling COPY start messages, but let's
handle that as a separate patch.
Michael Paquier, Amit Kapila and me. Backpatch to all supported versions.
Andres Freund [Mon, 14 Dec 2015 10:34:16 +0000 (11:34 +0100)]
Fix bug in SetOffsetVacuumLimit() triggered by find_multixact_start() failure.
Previously, if find_multixact_start() failed, SetOffsetVacuumLimit() would
install 0 into MultiXactState->offsetStopLimit if it previously succeeded.
Luckily, there are no known cases where find_multixact_start() will return
an error in 9.5 and above. But if it were to happen, for example due to
filesystem permission issues, it'd be somewhat bad: GetNewMultiXactId()
could continue allocating mxids even if close to a wraparound, or it could
erroneously stop allocating mxids, even if no wraparound is looming. The
wrong value would be corrected the next time SetOffsetVacuumLimit() is
called, or by a restart.
Reported-By: Noah Misch, although this is not his preferred fix
Discussion:
20151210140450[email protected]
Backpatch: 9.5, where the bug was introduced as part of 4f627f
Andres Freund [Mon, 14 Dec 2015 10:25:04 +0000 (11:25 +0100)]
Correct statement to actually be the intended assert statement.
e3f4cfc7 introduced a LWLockHeldByMe() call, without the corresponding
Assert() surrounding it.
Spotted by Coverity.
Backpatch: 9.1+, like the previous commit
Tom Lane [Mon, 14 Dec 2015 04:42:54 +0000 (23:42 -0500)]
Docs: document that psql's "\i -" means read from stdin.
This has worked that way for a long time, maybe always, but you would
not have known it from the documentation. Also back-patch the notes
I added to HEAD earlier today about behavior of the "-f -" switch,
which likewise have been valid for many releases.
Magnus Hagander [Sun, 13 Dec 2015 15:53:38 +0000 (16:53 +0100)]
Consistently set all fields in pg_stat_replication to null instead of 0
Previously the "sent" field would be set to 0 and all other xlog
pointers be set to NULL if there were no valid values (such as when
in a backup sending walsender).
Magnus Hagander [Sun, 13 Dec 2015 15:40:37 +0000 (16:40 +0100)]
Properly initialize write, flush and replay locations in walsender slots
These would leak random xlog positions if a walsender used for backup would
a walsender slot previously used by a replication walsender.
In passing also fix a couple of cases where the xlog pointer is directly
compared to zero instead of using XLogRecPtrIsInvalid, noted by
Michael Paquier.
Tom Lane [Sun, 13 Dec 2015 01:02:09 +0000 (20:02 -0500)]
Doc: update external URLs for PostGIS project.
Paul Ramsey
Andres Freund [Sat, 12 Dec 2015 13:19:19 +0000 (14:19 +0100)]
Fix ALTER TABLE ... SET TABLESPACE for unlogged relations.
Changing the tablespace of an unlogged relation did not WAL log the
creation and content of the init fork. Thus, after a standby is
promoted, unlogged relation cannot be accessed anymore, with errors
like:
ERROR: 58P01: could not open file "pg_tblspc/...": No such file or directory
Additionally the init fork was not synced to disk, independent of the
configured wal_level, a relatively small durability risk.
Investigation of that problem also brought to light that, even for
permanent relations, the creation of !main forks was not WAL logged,
i.e. no XLOG_SMGR_CREATE record were emitted. That mostly turns out not
to be a problem, because these files were created when the actual
relation data is copied; nonexistent files are not treated as an error
condition during replay. But that doesn't work for empty files, and
generally feels a bit haphazard. Luckily, outside init and main forks,
empty forks don't occur often or are not a problem.
Add the required WAL logging and syncing to disk.
Reported-By: Michael Paquier
Author: Michael Paquier and Andres Freund
Discussion:
20151210163230[email protected]
Backpatch: 9.1, where unlogged relations were introduced
Tom Lane [Sat, 12 Dec 2015 00:08:40 +0000 (19:08 -0500)]
Add an expected-file to match behavior of latest libxml2.
Recent releases of libxml2 do not provide error context reports for errors
detected at the very end of the input string. This appears to be a bug, or
at least an infelicity, introduced by the fix for libxml2's CVE-2015-7499.
We can hope that this behavioral change will get undone before too long;
but the security patch is likely to spread a lot faster/further than any
follow-on cleanup, which means this behavior is likely to be present in the
wild for some time to come. As a stopgap, add a variant regression test
expected-file that matches what you get with a libxml2 that acts this way.
Alvaro Herrera [Fri, 11 Dec 2015 21:39:09 +0000 (18:39 -0300)]
For REASSIGN OWNED for foreign user mappings
As reported in bug #13809 by Alexander Ashurkov, the code for REASSIGN
OWNED hadn't gotten word about user mappings. Deal with them in the
same way default ACLs do, which is to ignore them altogether; they are
handled just fine by DROP OWNED. The other foreign object cases are
already handled correctly by both commands.
Also add a REASSIGN OWNED statement to foreign_data test to exercise the
foreign data objects. (The changes are just before the "cleanup" phase,
so it shouldn't remove any existing live test.)
Reported by Alexander Ashurkov, then independently by Jaime Casanova.
Tom Lane [Fri, 11 Dec 2015 21:14:27 +0000 (16:14 -0500)]
Install our "missing" script where PGXS builds can find it.
This allows sane behavior in a PGXS build done on a machine where build
tools such as bison are missing.
Jim Nasby
Stephen Frost [Fri, 11 Dec 2015 21:12:36 +0000 (16:12 -0500)]
Handle policies during DROP OWNED BY
DROP OWNED BY handled GRANT-based ACLs but was not removing roles from
policies. Fix that by having DROP OWNED BY remove the role specified
from the list of roles the policy (or policies) apply to, or the entire
policy (or policies) if it only applied to the role specified.
As with ACLs, the DROP OWNED BY caller must have permission to modify
the policy or a WARNING is thrown and no change is made to the policy.
Tom Lane [Fri, 11 Dec 2015 20:52:16 +0000 (15:52 -0500)]
Get rid of the planner's LateralJoinInfo data structure.
I originally modeled this data structure on SpecialJoinInfo, but after
commit
acfcd45cacb6df23 that looks like a pretty poor decision.
All we really need is relid sets identifying laterally-referenced rels;
and most of the time, what we want to know about includes indirect lateral
references, a case the LateralJoinInfo data was unsuited to compute with
any efficiency. The previous commit redefined RelOptInfo.lateral_relids
as the transitive closure of lateral references, so that it easily supports
checking indirect references. For the places where we really do want just
direct references, add a new RelOptInfo field direct_lateral_relids, which
is easily set up as a copy of lateral_relids before we perform the
transitive closure calculation. Then we can just drop lateral_info_list
and LateralJoinInfo and the supporting code. This makes the planner's
handling of lateral references noticeably more efficient, and shorter too.
Such a change can't be back-patched into stable branches for fear of
breaking extensions that might be looking at the planner's data structures;
but it seems not too late to push it into 9.5, so I've done so.
Stephen Frost [Fri, 11 Dec 2015 20:44:03 +0000 (15:44 -0500)]
Handle dependencies properly in ALTER POLICY
ALTER POLICY hadn't fully considered partial policy alternation
(eg: change just the roles on the policy, or just change one of
the expressions) when rebuilding the dependencies. Instead, it
would happily remove all dependencies which existed for the
policy and then only recreate the dependencies for the objects
referred to in the specific ALTER POLICY command.
Correct that by extracting and building the dependencies for all
objects referenced by the policy, regardless of if they were
provided as part of the ALTER POLICY command or were already in
place as part of the pre-existing policy.
Tom Lane [Fri, 11 Dec 2015 19:22:20 +0000 (14:22 -0500)]
Still more fixes for planner's handling of LATERAL references.
More fuzz testing by Andreas Seltenreich exposed that the planner did not
cope well with chains of lateral references. If relation X references Y
laterally, and Y references Z laterally, then we will have to scan X on the
inside of a nestloop with Z, so for all intents and purposes X is laterally
dependent on Z too. The planner did not understand this and would generate
intermediate joins that could not be used. While that was usually harmless
except for wasting some planning cycles, under the right circumstances it
would lead to "failed to build any N-way joins" or "could not devise a
query plan" planner failures.
To fix that, convert the existing per-relation lateral_relids and
lateral_referencers relid sets into their transitive closures; that is,
they now show all relations on which a rel is directly or indirectly
laterally dependent. This not only fixes the chained-reference problem
but allows some of the relevant tests to be made substantially simpler
and faster, since they can be reduced to simple bitmap manipulations
instead of searches of the LateralJoinInfo list.
Also, when a PlaceHolderVar that is due to be evaluated at a join contains
lateral references, we should treat those references as indirect lateral
dependencies of each of the join's base relations. This prevents us from
trying to join any individual base relations to the lateral reference
source before the join is formed, which again cannot work.
Andreas' testing also exposed another oversight in the "dangerous
PlaceHolderVar" test added in commit
85e5e222b1dd02f1. Simply rejecting
unsafe join paths in joinpath.c is insufficient, because in some cases
we will end up rejecting *all* possible paths for a particular join, again
leading to "could not devise a query plan" failures. The restriction has
to be known also to join_is_legal and its cohort functions, so that they
will not select a join for which that will happen. I chose to move the
supporting logic into joinrels.c where the latter functions are.
Back-patch to 9.3 where LATERAL support was introduced.
Alvaro Herrera [Fri, 11 Dec 2015 17:30:43 +0000 (14:30 -0300)]
Fix commit timestamp initialization
This module needs explicit initialization in order to replay WAL records
in recovery, but we had broken this recently following changes to make
other (stranger) scenarios work correctly. To fix, rework the
initialization sequence so that it always takes place before WAL replay
commences for both master and standby.
I could have gone for a more localized fix that just added a "startup"
call for the master server, but it seemed better to restructure the
existing callers as well so that the whole thing made more sense. As a
drawback, there is more control logic in xlog.c now than previously, but
doing otherwise meant passing down the ControlFile flag, which seemed
uglier as a whole.
This also meant adding a check to not re-execute ActivateCommitTs if it
had already been called.
Reported by Fujii Masao.
Backpatch to 9.5.
Peter Eisentraut [Fri, 11 Dec 2015 03:05:27 +0000 (22:05 -0500)]
Improve some messages
Robert Haas [Thu, 10 Dec 2015 17:28:46 +0000 (12:28 -0500)]
Improve ALTER POLICY tab completion.
Complete "ALTER POLICY" with a policy name, as we do for DROP POLICY.
And, complete "ALTER POLICY polname ON" with a table name that has such
a policy, as we do for DROP POLICY, rather than with any table name
at all.
Masahiko Sawada
Robert Haas [Thu, 10 Dec 2015 16:13:24 +0000 (11:13 -0500)]
Fix typo.
Etsuro Fujita
Andres Freund [Thu, 10 Dec 2015 15:26:45 +0000 (16:26 +0100)]
Fix ON CONFLICT UPDATE bug breaking AFTER UPDATE triggers.
ExecOnConflictUpdate() passed t_ctid of the to-be-updated tuple to
ExecUpdate(). That's problematic primarily because of two reason: First
and foremost t_ctid could point to a different tuple. Secondly, and
that's what triggered the complaint by Stanislav, t_ctid is changed by
heap_update() to point to the new tuple version. The behavior of AFTER
UPDATE triggers was therefore broken, with NEW.* and OLD.* tuples
spuriously identical within AFTER UPDATE triggers.
To fix both issues, pass a pointer to t_self of a on-stack HeapTuple
instead.
Fixing this bug lead to one change in regression tests, which previously
failed due to the first issue mentioned above. There's a reasonable
expectation that test fails, as it updates one row repeatedly within one
INSERT ... ON CONFLICT statement. That is only possible if the second
update is triggered via ON CONFLICT ... SET, ON CONFLICT ... WHERE, or
by a WITH CHECK expression, as those are executed after
ExecOnConflictUpdate() does a visibility check. That could easily be
prohibited, but given it's allowed for plain UPDATEs and a rare corner
case, it doesn't seem worthwhile.
Reported-By: Stanislav Grozev
Author: Andres Freund and Peter Geoghegan
Discussion: CAA78GVqy1+LisN-8DygekD_Ldfy=BJLarSpjGhytOsgkpMavfQ@mail.gmail.com
Backpatch: 9.5, where ON CONFLICT was introduced
Andres Freund [Thu, 10 Dec 2015 15:25:12 +0000 (16:25 +0100)]
Fix bug leading to restoring unlogged relations from empty files.
At the end of crash recovery, unlogged relations are reset to the empty
state, using their init fork as the template. The init fork is copied to
the main fork without going through shared buffers. Unfortunately WAL
replay so far has not necessarily flushed writes from shared buffers to
disk at that point. In normal crash recovery, and before the
introduction of 'fast promotions' in
fd4ced523 / 9.3, the
END_OF_RECOVERY checkpoint flushes the buffers out in time. But with
fast promotions that's not the case anymore.
To fix, force WAL writes targeting the init fork to be flushed
immediately (using the new FlushOneBuffer() function). In 9.5+ that
flush can centrally be triggered from the code dealing with restoring
full page writes (XLogReadBufferForRedoExtended), in earlier releases
that responsibility is in the hands of XLOG_HEAP_NEWPAGE's replay
function.
Backpatch to 9.1, even if this currently is only known to trigger in
9.3+. Flushing earlier is more robust, and it is advantageous to keep
the branches similar.
Typical symptoms of this bug are errors like
'ERROR: index "..." contains unexpected zero page at block 0'
shortly after promoting a node.
Reported-By: Thom Brown
Author: Andres Freund and Michael Paquier
Discussion:
20150326175024[email protected]
Backpatch: 9.1-
Tom Lane [Thu, 10 Dec 2015 15:19:13 +0000 (10:19 -0500)]
Accept flex > 2.5.x on Windows, too.
Commit
32f15d05c fixed this in configure, but missed the similar check
in the MSVC scripts.
Michael Paquier, per report from Victor Wagner
Tom Lane [Wed, 9 Dec 2015 23:54:25 +0000 (18:54 -0500)]
Simplify LATERAL-related calculations within add_paths_to_joinrel().
While convincing myself that commit
7e19db0c09719d79 would solve both of
the problems recently reported by Andreas Seltenreich, I realized that
add_paths_to_joinrel's handling of LATERAL restrictions could be made
noticeably simpler and faster if we were to retain the minimum possible
parameterization for each joinrel (that is, the set of relids supplying
unsatisfied lateral references in it). We already retain that for
baserels, in RelOptInfo.lateral_relids, so we can use that field for
joinrels too.
This is a back-port of commit
edca44b1525b3d591263d032dc4fe500ea771e0e.
I originally intended not to back-patch that, but additional hacking
in this area turns out to be needed, making it necessary not optional
to compute lateral_relids for joinrels. In preparation for those fixes,
sync the relevant code with HEAD as much as practical. (I did not risk
rearranging fields of RelOptInfo in released branches, however.)
Robert Haas [Wed, 9 Dec 2015 19:11:58 +0000 (14:11 -0500)]
Remove redundant sentence.
Peter Geoghegan
Tom Lane [Tue, 8 Dec 2015 22:14:46 +0000 (17:14 -0500)]
Make failure to open psql's --log-file fatal.
Commit
344cdff2c made failure to open the target of --output fatal.
For consistency, the --log-file switch should behave similarly.
Like the previous commit, back-patch to 9.5 but no further.
Daniel Verite
Tom Lane [Tue, 8 Dec 2015 21:58:05 +0000 (16:58 -0500)]
Avoid odd portability problem in TestLib.pm's slurp_file function.
For unclear reasons, this function doesn't always read the expected data
in some old Perl versions. Rewriting it to avoid use of ARGV seems to
dodge the problem, and this version is clearer anyway if you ask me.
In passing, also improve error message in adjacent append_to_file function.
Robert Haas [Tue, 8 Dec 2015 17:31:03 +0000 (12:31 -0500)]
Allow foreign and custom joins to handle EvalPlanQual rechecks.
Commit
e7cb7ee14555cc9c5773e2c102efd6371f6f2005 provided basic
infrastructure for allowing a foreign data wrapper or custom scan
provider to replace a join of one or more tables with a scan.
However, this infrastructure failed to take into account the need
for possible EvalPlanQual rechecks, and ExecScanFetch would fail
an assertion (or just overwrite memory) if such a check was attempted
for a plan containing a pushed-down join. To fix, adjust the EPQ
machinery to skip some processing steps when scanrelid == 0, making
those the responsibility of scan's recheck method, which also has
the responsibility in this case of correctly populating the relevant
slot.
To allow foreign scans to gain control in the right place to make
use of this new facility, add a new, optional RecheckForeignScan
method. Also, allow a foreign scan to have a child plan, which can
be used to correctly populate the slot (or perhaps for something
else, but this is the only use currently envisioned).
KaiGai Kohei, reviewed by Robert Haas, Etsuro Fujita, and Kyotaro
Horiguchi.
Tom Lane [Mon, 7 Dec 2015 22:41:45 +0000 (17:41 -0500)]
Fix another oversight in checking if a join with LATERAL refs is legal.
It was possible for the planner to decide to join a LATERAL subquery to
the outer side of an outer join before the outer join itself is completed.
Normally that's fine because of the associativity rules, but it doesn't
work if the subquery contains a lateral reference to the inner side of the
outer join. In such a situation the outer join *must* be done first.
join_is_legal() missed this consideration and would allow the join to be
attempted, but the actual path-building code correctly decided that no
valid join path could be made, sometimes leading to planner errors such as
"failed to build any N-way joins".
Per report from Andreas Seltenreich. Back-patch to 9.3 where LATERAL
support was added.
Tom Lane [Sun, 6 Dec 2015 17:42:32 +0000 (12:42 -0500)]
Update xindex.sgml for recent additions to GIST opclass API.
Commit
d04c8ed9044ec added another support function to the GIST API,
but overlooked mentioning it in xindex.sgml's summary of index support
functions.
Anastasia Lubennikova
Tom Lane [Sat, 5 Dec 2015 18:23:48 +0000 (13:23 -0500)]
Create TestLib.pm's tempdir underneath tmp_check/, not out in the open.
This way, existing .gitignore entries and makefile clean actions will
automatically apply to the tempdir, should it survive a TAP test run
(which can happen if the user control-C's out of the run, for example).
Michael Paquier, per a complaint from me
Noah Misch [Sat, 5 Dec 2015 08:04:17 +0000 (03:04 -0500)]
Instruct Coverity using an assertion.
This should make Coverity deduce that plperl_call_perl_func() does not
dereference NULL argtypes. Back-patch to 9.5, where the affected code
was introduced.
Michael Paquier
Tom Lane [Fri, 4 Dec 2015 19:44:13 +0000 (14:44 -0500)]
Further improve documentation of the role-dropping process.
In commit
1ea0c73c2 I added a section to user-manag.sgml about how to drop
roles that own objects; but as pointed out by Stephen Frost, I neglected
that shared objects (databases or tablespaces) may need special treatment.
Fix that. Back-patch to supported versions, like the previous patch.
Alvaro Herrera [Thu, 3 Dec 2015 22:22:31 +0000 (19:22 -0300)]
Further tweak commit_timestamp behavior
As pointed out by Fujii Masao, we weren't quite there on a standby
behaving sanely: first because we were failing to acquire the correct
state in the case where no XLOG_PARAMETER_CHANGE message was sent
(because a checkpoint had already happened after the setting was changed
in the master, and then the standby was restarted); and second because
promoting the standby with the feature enabled failed to activate it if
the master had the feature disabled.
This patch fixes both those misbehaviors hopefully without
re-introducing any old problems.
Also change the hint emitted in a standby together with the error
message about the feature being disabled, to make it point out that the
place to chance the setting is the master. Otherwise, if the setting is
already enabled in the standby, it is very confusing to have it say that
the setting must be enabled ...
Authors: Álvaro Herrera, Petr Jelínek.
Backpatch to 9.5.
Tom Lane [Thu, 3 Dec 2015 19:29:07 +0000 (14:29 -0500)]
Clean up some psql issues around handling of the query output file.
Formerly, if "psql -o foo" failed to open the output file "foo", it would
print an error message but then carry on as though -o had not been
specified at all. This seems contrary to expectation: a program that
cannot open its output file normally fails altogether. Make psql do
exit(1) after reporting the error.
If "\o foo" failed to open "foo", it would print an error message but then
reset the output file to stdout, as if the argument had been omitted.
This is likewise pretty surprising behavior. Make it keep the previous
output state, instead.
psql keeps SIGPIPE interrupts disabled when it is writing to a pipe, either
a pipe specified by -o/\o or a transient pipe opened for purposes such as
using a pager on query output. The logic for this was too simple and could
sometimes re-enable SIGPIPE when a -o pipe was still active, thus possibly
leading to an unexpected psql crash later.
Fixing the last point required getting rid of the kluge in PrintQueryTuples
and ExecQueryUsingCursor whereby they'd transiently change the global
queryFout state, but that seems like good cleanup anyway.
Back-patch to 9.5 but not further; these are minor-enough issues that
changing the behavior in stable branches doesn't seem appropriate.
Peter Eisentraut [Thu, 3 Dec 2015 15:23:59 +0000 (10:23 -0500)]
psql: Improve spelling
Peter Eisentraut [Thu, 3 Dec 2015 15:20:54 +0000 (10:20 -0500)]
doc: Fix markup and improve placeholder names
Tom Lane [Wed, 2 Dec 2015 23:20:34 +0000 (18:20 -0500)]
Fix behavior of printTable() and friends with externally-invoked pager.
The formatting modes that depend on knowledge of the terminal window width
did not work right when printing a query result that's been fetched in
sections (as a result of FETCH_SIZE). ExecQueryUsingCursor() would force
use of the pager as soon as there's more than one result section, and then
print.c would see an output file pointer that's not stdout and incorrectly
conclude that the terminal window width isn't relevant.
This has been broken all along for non-expanded "wrapped" output format,
and as of 9.5 the issue affects expanded mode as well. The problem also
caused "\pset expanded auto" mode to invariably *not* switch to expanded
output in a segmented result, which seems to me to be exactly backwards.
To fix, we need to pass down an "is_pager" flag to inform the print.c
subroutines that some calling level has already replaced stdout with a
pager pipe, so they should (a) not do that again and (b) nonetheless honor
the window size. (Notably, this makes the first is_pager test in
print_aligned_text() not be dead code anymore.)
This patch is a bit invasive because there are so many existing calls of
printQuery()/printTable(), but fortunately all but a couple can just pass
"false" for the added parameter.
Back-patch to 9.5 but no further. Given the lack of field complaints,
it's not clear that we should change the behavior in stable branches.
Also, the API change for printQuery()/printTable() might possibly break
third-party code, again something we don't like to do in stable branches.
However, it's not quite too late to do this in 9.5, and with the larger
scope of the problem there, it seems worth doing.
Tom Lane [Tue, 1 Dec 2015 21:24:34 +0000 (16:24 -0500)]
Make gincostestimate() cope with hypothetical GIN indexes.
We tried to fetch statistics data from the index metapage, which does not
work if the index isn't actually present. If the index is hypothetical,
instead extrapolate some plausible internal statistics based on the index
page count provided by the index-advisor plugin.
There was already some code in gincostestimate() to invent internal stats
in this way, but since it was only meant as a stopgap for pre-9.1 GIN
indexes that hadn't been vacuumed since upgrading, it was pretty crude.
If we want it to support index advisors, we should try a little harder.
A small amount of testing says that it's better to estimate the entry pages
as 90% of the index, not 100%. Also, estimating the number of entries
(keys) as equal to the heap tuple count could be wildly wrong in either
direction. Instead, let's estimate 100 entries per entry page.
Perhaps someday somebody will want the index advisor to be able to provide
these numbers more directly, but for the moment this should serve.
Problem report and initial patch by Julien Rouhaud; modified by me to
invent less-bogus internal statistics. Back-patch to all supported
branches, since we've supported index advisors since 9.0.
Tom Lane [Tue, 1 Dec 2015 19:47:13 +0000 (14:47 -0500)]
Further tweaking of print_aligned_vertical().
Don't force the data width to extend all the way to the right margin if it
doesn't need to. This reverts the behavior in non-wrapping cases to be
what it was in 9.4. Also, make the logic that ensures the data line width
is at least equal to the record-header line width a little less obscure.
In passing, avoid possible calculation of log10(0). Probably that's
harmless, given the lack of field complaints, but it seems risky:
conversion of NaN to an integer isn't well defined.
Tom Lane [Tue, 1 Dec 2015 16:42:25 +0000 (11:42 -0500)]
Use "g" not "f" format in ecpg's PGTYPESnumeric_from_double().
The previous coding could overrun the provided buffer size for a very large
input, or lose precision for a very small input. Adopt the methodology
that's been in use in the equivalent backend code for a long time.
Per private report from Bas van Schaik. Back-patch to all supported
branches.
Tom Lane [Tue, 1 Dec 2015 16:07:29 +0000 (11:07 -0500)]
Further adjustment to psql's print_aligned_vertical() function.
We should ignore output_columns unless it's greater than zero.
A zero means we couldn't get any information from ioctl(TIOCGWINSZ);
in that case the expected behavior is to print the data at native width,
not to wrap it at the smallest possible value. print_aligned_text()
gets this consideration right, but print_aligned_vertical() lost track
of this detail somewhere along the line.
Tom Lane [Mon, 30 Nov 2015 22:53:32 +0000 (17:53 -0500)]
Rework wrap-width calculation in psql's print_aligned_vertical() function.
This area was rather heavily whacked around in
6513633b9 and follow-on
commits, and it was showing it, because the logic to calculate the
allowable data width in wrapped expanded mode had only the vaguest
relationship to the logic that was actually printing the data. It was
not very close to being right about the conditions requiring overhead
columns to be added. Aside from being wrong, it was pretty unreadable
and under-commented. Rewrite it so it corresponds to what the printing
code actually does.
In passing, remove a couple of dead tests in the printing logic, too.
Per a complaint from Jeff Janes, though this doesn't look much like his
patch because it fixes a number of other corner-case bogosities too.
One such fix that's visible in the regression test results is that
although the code was attempting to enforce a minimum data width of
3 columns, it sometimes left less space than that available.
Tom Lane [Sun, 29 Nov 2015 23:18:42 +0000 (18:18 -0500)]
Avoid caching expression state trees for domain constraints across queries.
In commit
8abb3cda0ddc00a0ab98977a1633a95b97068d4e I attempted to cache
the expression state trees constructed for domain CHECK constraints for
the life of the backend (assuming the domain's constraints don't get
redefined). However, this turns out not to work very well, because
execQual.c will run those state trees with ecxt_per_query_memory pointing
to a query-lifespan context, and in some situations we'll end up with
pointers into that context getting stored into the state trees. This
happens in particular with SQL-language functions, as reported by
Emre Hasegeli, but there are many other cases.
To fix, keep only the expression plan trees for domain CHECK constraints
in the typcache's data structure, and revert to performing ExecInitExpr
(at least) once per query to set up expression state trees in the query's
context.
Eventually it'd be nice to undo this, but that will require some careful
thought about memory management for expression state trees, and it seems
far too late for any such redesign in 9.5. This way is still much more
efficient than what happened before
8abb3cda0.
Tom Lane [Thu, 26 Nov 2015 18:23:02 +0000 (13:23 -0500)]
Fix failure to consider failure cases in GetComboCommandId().
Failure to initially palloc the comboCids array, or to realloc it bigger
when needed, left combocid's data structures in an inconsistent state that
would cause trouble if the top transaction continues to execute. Noted
while examining a user complaint about the amount of memory used for this.
(There's not much we can do about that, but it does point up that repalloc
failure has a non-negligible chance of occurring here.)
In HEAD/9.5, also avoid possible invocation of memcpy() with a null pointer
in SerializeComboCIDState; cf commit
13bba0227.
Tom Lane [Wed, 25 Nov 2015 22:31:53 +0000 (17:31 -0500)]
Be more paranoid about null return values from libpq status functions.
PQhost() can return NULL in non-error situations, namely when a Unix-socket
connection has been selected by default. That behavior is a tad debatable
perhaps, but for the moment we should make sure that psql copes with it.
Unfortunately, do_connect() failed to: it could pass a NULL pointer to
strcmp(), resulting in crashes on most platforms. This was reported as a
security issue by ChenQin of Topsec Security Team, but the consensus of
the security list is that it's just a garden-variety bug with no security
implications.
For paranoia's sake, I made the keep_password test not trust PQuser or
PQport either, even though I believe those will never return NULL given
a valid PGconn.
Back-patch to all supported branches.
Bruce Momjian [Tue, 24 Nov 2015 22:18:28 +0000 (17:18 -0500)]
pg_upgrade: fix CopyFile() on Windows to fail on file existence
Also fix getErrorText() to return the right error string on failure.
This behavior now matches that of other operating systems.
Report by Noah Misch
Backpatch through 9.1
Peter Eisentraut [Tue, 24 Nov 2015 02:36:57 +0000 (21:36 -0500)]
doc: Some improvements on CREATE POLICY and ALTER POLICY documentation
Teodor Sigaev [Mon, 23 Nov 2015 16:30:36 +0000 (19:30 +0300)]
Clarify pg_rewind connection requirements.
Per http://www.postgresql.org/message-id/flat/
564C4CE6.
9000509@postgrespro.ru
Pavel Luzanov
Peter Eisentraut [Mon, 23 Nov 2015 14:13:44 +0000 (09:13 -0500)]
doc: Add more documentation about wal_retrieve_retry_interval
from Michael Paquier
Tom Lane [Sun, 22 Nov 2015 01:21:32 +0000 (20:21 -0500)]
Adopt the GNU convention for handling tar-archive members exceeding 8GB.
The POSIX standard for tar headers requires archive member sizes to be
printed in octal with at most 11 digits, limiting the representable file
size to 8GB. However, GNU tar and apparently most other modern tars
support a convention in which oversized values can be stored in base-256,
allowing any practical file to be a tar member. Adopt this convention
to remove two limitations:
* pg_dump with -Ft output format failed if the contents of any one table
exceeded 8GB.
* pg_basebackup failed if the data directory contained any file exceeding
8GB. (This would be a fatal problem for installations configured with a
table segment size of 8GB or more, and it has also been seen to fail when
large core dump files exist in the data directory.)
File sizes under 8GB are still printed in octal, so that no compatibility
issues are created except in cases that would have failed entirely before.
In addition, this patch fixes several bugs in the same area:
* In 9.3 and later, we'd defined tarCreateHeader's file-size argument as
size_t, which meant that on 32-bit machines it would write a corrupt tar
header for file sizes between 4GB and 8GB, even though no error was raised.
This broke both "pg_dump -Ft" and pg_basebackup for such cases.
* pg_restore from a tar archive would fail on tables of size between 4GB
and 8GB, on machines where either "size_t" or "unsigned long" is 32 bits.
This happened even with an archive file not affected by the previous bug.
* pg_basebackup would fail if there were files of size between 4GB and 8GB,
even on 64-bit machines.
* In 9.3 and later, "pg_basebackup -Ft" failed entirely, for any file size,
on 64-bit big-endian machines.
In view of these potential data-loss bugs, back-patch to all supported
branches, even though removal of the documented 8GB limit might otherwise
be considered a new feature rather than a bug fix.
Tom Lane [Fri, 20 Nov 2015 19:55:28 +0000 (14:55 -0500)]
Fix handling of inherited check constraints in ALTER COLUMN TYPE (again).
The previous way of reconstructing check constraints was to do a separate
"ALTER TABLE ONLY tab ADD CONSTRAINT" for each table in an inheritance
hierarchy. However, that way has no hope of reconstructing the check
constraints' own inheritance properties correctly, as pointed out in
bug #13779 from Jan Dirk Zijlstra. What we should do instead is to do
a regular "ALTER TABLE", allowing recursion, at the topmost table that
has a particular constraint, and then suppress the work queue entries
for inherited instances of the constraint.
Annoyingly, we'd tried to fix this behavior before, in commit
5ed6546cf,
but we failed to notice that it wasn't reconstructing the pg_constraint
field values correctly.
As long as I'm touching pg_get_constraintdef_worker anyway, tweak it to
always schema-qualify the target table name; this seems like useful backup
to the protections installed by commit
5f173040.
In HEAD/9.5, get rid of get_constraint_relation_oids, which is now unused.
(I could alternatively have modified it to also return conislocal, but that
seemed like a pretty single-purpose API, so let's not pretend it has some
other use.) It's unused in the back branches as well, but I left it in
place just in case some third-party code has decided to use it.
In HEAD/9.5, also rename pg_get_constraintdef_string to
pg_get_constraintdef_command, as the previous name did nothing to explain
what that entry point did differently from others (and its comment was
equally useless). Again, that change doesn't seem like material for
back-patching.
I did a bit of re-pgindenting in tablecmds.c in HEAD/9.5, as well.
Otherwise, back-patch to all supported branches.
Tom Lane [Thu, 19 Nov 2015 19:54:05 +0000 (14:54 -0500)]
Dodge a macro-name conflict with Perl.
Some versions of Perl export a macro named HS_KEY. This creates a
conflict in contrib/hstore_plperl against hstore's macro of the same
name. The most future-proof solution seems to be to rename our macro;
I chose HSTORE_KEY. For consistency, rename HS_VAL and related macros
similarly.
Back-patch to 9.5. contrib/hstore_plperl doesn't exist before that
so there is no need to worry about the conflict in older releases.
Per reports from Marco Atzeri and Mike Blackwell.
Peter Eisentraut [Thu, 19 Nov 2015 19:19:04 +0000 (14:19 -0500)]
doc: Clarify some things on pg_receivexlog reference page
Tom Lane [Thu, 19 Nov 2015 19:16:39 +0000 (14:16 -0500)]
Fix thinko: errmsg -> ereport.
Silly mistake in my commit
09cecdf285ea9f51, reported by Erik Rijkers.
The fact that the buildfarm didn't find this implies that we are not
testing Perl builds that lack MULTIPLICITY, which is a bit disturbing
from a coverage standpoint. Until today I'd have said nobody cared
about such configurations anymore; but maybe not.
Andrew Dunstan [Thu, 19 Nov 2015 07:42:02 +0000 (02:42 -0500)]
fix a perl typo
Andrew Dunstan [Thu, 19 Nov 2015 04:32:16 +0000 (23:32 -0500)]
Update docs for vcregress.pl bincheck changes
Andrew Dunstan [Thu, 19 Nov 2015 03:47:41 +0000 (22:47 -0500)]
Improve vcregress.pl's handling of tap tests for client programs
The target is now named 'bincheck' rather than 'tapcheck' so that it
reflects what is checked instead of the test mechanism. Some of the
logic is improved, making it easier to add further sets of TAP based
tests in future. Also, the environment setting logic is imrpoved.
As discussed on -hackers a couple of months ago.
Robert Haas [Thu, 19 Nov 2015 02:17:50 +0000 (21:17 -0500)]
Fix incomplete set_foreignscan_references handling for fdw_recheck_quals
KaiGai Kohei
Andres Freund [Mon, 9 Nov 2015 23:02:49 +0000 (00:02 +0100)]
Improve ON CONFLICT documentation.
Author: Peter Geoghegan and Andres Freund
Discussion: CAM3SWZScpWzQ-7EJC77vwqzZ1GO8GNmURQ1QqDQ3wRn7AbW1Cg@mail.gmail.com
Backpatch: 9.5, where ON CONFLICT was introduced
Andres Freund [Thu, 19 Nov 2015 00:25:58 +0000 (01:25 +0100)]
Remove function names from some elog() calls in heapam.c.
At least one of the names was, due to a function renaming late in the
development of ON CONFLICT, wrong. Since including function names in
error messages is against the message style guide anyway, remove them
from the messages.
Discussion: CAM3SWZT8paz=usgMVHm0XOETkQvzjRtAUthATnmaHQQY0obnGw@mail.gmail.com
Backpatch: 9.5, where ON CONFLICT was introduced
Tom Lane [Wed, 18 Nov 2015 22:45:05 +0000 (17:45 -0500)]
Accept flex > 2.5.x in configure.
Per buildfarm member anchovy, 2.6.0 exists in the wild now.
Hopefully it works with Postgres; if not, we'll have to do something
about that, but in any case claiming it's "too old" is pretty silly.
Tom Lane [Tue, 17 Nov 2015 20:46:47 +0000 (15:46 -0500)]
Fix possible internal overflow in numeric division.
div_var_fast() postpones propagating carries in the same way as mul_var(),
so it has the same corner-case overflow risk we fixed in
246693e5ae8a36f0,
namely that the size of the carries has to be accounted for when setting
the threshold for executing a carry propagation step. We've not devised
a test case illustrating the brokenness, but the required fix seems clear
enough. Like the previous fix, back-patch to all active branches.
Dean Rasheed
Tom Lane [Tue, 17 Nov 2015 19:10:24 +0000 (14:10 -0500)]
Back-patch fixes to make TAP tests work on Windows.
This back-ports commit
13d856e177e69083 and assorted followon patches
into 9.4 and 9.5. 9.5 and HEAD are now substantially identical in all
the files touched by this commit, except that 010_pg_basebackup.pl has
a few more tests related to the new --slot option. 9.4 has many fewer
TAP tests, but the test infrastructure files are substantially the same,
with the exception that 9.4 lacks the single-tmp-install infrastructure
introduced in 9.5 (commit
dcae5faccab64776).
The primary motivation for this patch is to ensure that TAP test case
fixes can be back-patched without hazards of the kind seen in commits
34557f544/
06dd4b44f. In principle it should also make the world safe
for running the TAP tests in the buildfarm in these branches; although
we might want to think about back-porting
dcae5faccab64776 to 9.4 if
we're going to do that for real, because the TAP tests are quite disk
space hungry without it.
Michael Paquier did the back-porting work; original patches were by
him and assorted other people.
Peter Eisentraut [Tue, 17 Nov 2015 11:53:07 +0000 (06:53 -0500)]
Message style fix
from Euler Taveira
Peter Eisentraut [Tue, 17 Nov 2015 03:26:32 +0000 (22:26 -0500)]
Improve message
Peter Eisentraut [Tue, 17 Nov 2015 02:16:42 +0000 (21:16 -0500)]
Message improvements
Peter Eisentraut [Mon, 16 Nov 2015 23:59:55 +0000 (18:59 -0500)]
doc: Fix commas and improve spacing
Tom Lane [Mon, 16 Nov 2015 18:45:17 +0000 (13:45 -0500)]
Speed up ruleutils' name de-duplication code, and fix overlength-name case.
Since commit
11e131854f8231a21613f834c40fe9d046926387, ruleutils.c has
attempted to ensure that each RTE in a query or plan tree has a unique
alias name. However, the code that was added for this could be quite slow,
even as bad as O(N^3) if N identical RTE names must be replaced, as noted
by Jeff Janes. Improve matters by building a transient hash table within
set_rtable_names. The hash table in itself reduces the cost of detecting a
duplicate from O(N) to O(1), and we can save another factor of N by storing
the number of de-duplicated names already created for each entry, so that
we don't have to re-try names already created. This way is probably a bit
slower overall for small range tables, but almost by definition, such cases
should not be a performance problem.
In principle the same problem applies to the column-name-de-duplication
code; but in practice that seems to be less of a problem, first because
N is limited since we don't support extremely wide tables, and second
because duplicate column names within an RTE are fairly rare, so that in
practice the cost is more like O(N^2) not O(N^3). It would be very much
messier to fix the column-name code, so for now I've left that alone.
An independent problem in the same area was that the de-duplication code
paid no attention to the identifier length limit, and would happily produce
identifiers that were longer than NAMEDATALEN and wouldn't be unique after
truncation to NAMEDATALEN. This could result in dump/reload failures, or
perhaps even views that silently behaved differently than before. We can
fix that by shortening the base name as needed. Fix it for both the
relation and column name cases.
In passing, check for interrupts in set_rtable_names, just in case it's
still slow enough to be an issue.
Back-patch to 9.3 where this code was introduced.
Tom Lane [Sun, 15 Nov 2015 19:41:09 +0000 (14:41 -0500)]
Fix ruleutils.c's dumping of whole-row Vars in ROW() and VALUES() contexts.
Normally ruleutils prints a whole-row Var as "foo.*". We already knew that
that doesn't work at top level of a SELECT list, because the parser would
treat the "*" as a directive to expand the reference into separate columns,
not a whole-row Var. However, Joshua Yanovski points out in bug #13776
that the same thing happens at top level of a ROW() construct; and some
nosing around in the parser shows that the same is true in VALUES().
Hence, apply the same workaround already devised for the SELECT-list case,
namely to add a forced cast to the appropriate rowtype in these cases.
(The alternative of just printing "foo" was rejected because it is
difficult to avoid ambiguity against plain columns named "foo".)
Back-patch to all supported branches.
Bruce Momjian [Sat, 14 Nov 2015 16:47:11 +0000 (11:47 -0500)]
pg_upgrade: properly detect file copy failure on Windows
Previously, file copy failures were ignored on Windows due to an
incorrect return value check.
Report by Manu Joye
Backpatch through 9.1
Stephen Frost [Fri, 13 Nov 2015 16:06:42 +0000 (11:06 -0500)]
Correct sepgsql docs with regard to RLS
The sepgsql docs included a comment that PG doesn't support RLS. That
is only true for versions prior to 9.5.
Update the docs for 9.5 and master to say that PG supports RLS but that
sepgsql does not yet.
Pointed out by Heikki.
Back-patch to 9.5
Alvaro Herrera [Thu, 12 Nov 2015 21:05:23 +0000 (18:05 -0300)]
vacuumdb: don't prompt for passwords over and over
Having the script prompt for passwords over and over was a preexisting
problem when it processed multiple databases or when it processed
multiple analyze stages, but the parallel mode introduced in commit
a179232047 made it worse.
Fix the annoyance by keeping a copy of the password used by the first
connection that requires one. Since users can (currently) only have a
single password, there's no need for more complex arrangements (such as
remembering one password per database).
Per bug #13741 reported by Eric Brown. Patch authored and
cross-reviewed by Haribabu Kommi and Michael Paquier, slightly tweaked
by Álvaro Herrera.
Discussion: http://www.postgresql.org/message-id/
20151027193919[email protected]
Backpatch to 9.5, where parallel vacuumdb was introduced.
Tom Lane [Thu, 12 Nov 2015 18:03:52 +0000 (13:03 -0500)]
Fix unwanted flushing of libpq's input buffer when socket EOF is seen.
In commit
210eb9b743c0645d I centralized libpq's logic for closing down
the backend communication socket, and made the new pqDropConnection
routine always reset the I/O buffers to empty. Many of the call sites
previously had not had such code, and while that amounted to an oversight
in some cases, there was one place where it was intentional and necessary
*not* to flush the input buffer: pqReadData should never cause that to
happen, since we probably still want to process whatever data we read.
This is the true cause of the problem Robert was attempting to fix in
c3e7c24a1d60dc6a, namely that libpq no longer reported the backend's final
ERROR message before reporting "server closed the connection unexpectedly".
But that only accidentally fixed it, by invoking parseInput before the
input buffer got flushed; and very likely there are timing scenarios
where we'd still lose the message before processing it.
To fix, pass a flag to pqDropConnection to tell it whether to flush the
input buffer or not. On review I think flushing is actually correct for
every other call site.
Back-patch to 9.3 where the problem was introduced. In HEAD, also improve
the comments added by
c3e7c24a1d60dc6a.
Tom Lane [Thu, 12 Nov 2015 00:19:14 +0000 (19:19 -0500)]
Do a round of copy-editing on the 9.5 release notes.
Also fill in the previously empty "major enhancements" list. YMMV as to
which items should make the cut, but it's past time we had something more
than a placeholder here.
(I meant to get this done before beta2 was wrapped, but got distracted by
PDF build problems. Better late than never.)
Tom Lane [Wed, 11 Nov 2015 22:13:38 +0000 (17:13 -0500)]
Improve documentation around autovacuum-related storage parameters.
These were discussed in three different sections of the manual, which
unsurprisingly had diverged over time; and the descriptions of individual
variables lacked stylistic consistency even within each section (and
frequently weren't in very good English anyway). Clean up the mess, and
remove some of the redundant information in hopes that future additions
will be less likely to re-introduce inconsistency. For instance I see
no need for maintenance.sgml to include its very own list of all the
autovacuum storage parameters, especially since that list was already
incomplete.
Tom Lane [Wed, 11 Nov 2015 03:11:39 +0000 (22:11 -0500)]
Docs: fix misleading example.
Commit
8457d0beca731bf0 introduced an example which, while not incorrect,
failed to exhibit the behavior it meant to describe, as a result of omitting
an E'' prefix that needed to be there. Noticed and fixed by Peter Geoghegan.
I (tgl) failed to resist the temptation to wordsmith nearby text a bit
while at it.
Tom Lane [Tue, 10 Nov 2015 20:59:59 +0000 (15:59 -0500)]
Improve our workaround for 'TeX capacity exceeded' in building PDF files.
In commit
a5ec86a7c787832d28d5e50400ec96a5190f2555 I wrote a quick hack
that reduced the number of TeX string pool entries created while converting
our documentation to PDF form. That held the fort for awhile, but as of
HEAD we're back up against the same limitation. It turns out that the
original coding of \FlowObjectSetup actually results in *three* string pool
entries being generated for every "flow object" (that is, potential
cross-reference target) in the documentation, and my previous hack only got
rid of one of them. With a little more care, we can reduce the string
count to one per flow object plus one per actually-cross-referenced flow
object (about 115000 + 5000 as of current HEAD); that should work until
the documentation volume roughly doubles from where it is today.
As a not-incidental side benefit, this change also causes pdfjadetex to
stop emitting unreferenced hyperlink anchors (bookmarks) into the PDF file.
It had been making one willy-nilly for every flow object; now it's just one
per actually-cross-referenced object. This results in close to a 2X
savings in PDF file size. We will still want to run the output through
"jpdftweak" to get it to be compressed; but we no longer need removal of
unreferenced bookmarks, so we might be able to find a quicker tool for
that step.
Although the failure only affects HEAD and US-format output at the moment,
9.5 cannot be more than a few pages short of failing likewise, so it
will inevitably fail after a few rounds of minor-version release notes.
I don't have a lot of faith that we'll never hit the limit in the older
branches; and anyway it would be nice to get rid of jpdftweak across the
board. Therefore, back-patch to all supported branches.
Robert Haas [Mon, 9 Nov 2015 19:53:52 +0000 (14:53 -0500)]
Stamp 9.5beta2.
Peter Eisentraut [Mon, 9 Nov 2015 15:21:11 +0000 (10:21 -0500)]
Translation updates
Source-Git-URL: git://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash:
cd263526676705b4a8a3a708c9842461c4a2bcc3
Andres Freund [Mon, 9 Nov 2015 04:08:56 +0000 (05:08 +0100)]
Add paragraph about ON CONFLICT interaction with partitioning.
Author: Peter Geoghegan and Andres Freund
Discussion: CAM3SWZScpWzQ-7EJC77vwqzZ1GO8GNmURQ1QqDQ3wRn7AbW1Cg@mail.gmail.com,
CAHGQGwFUCWwSU7dtc2aRdRk73ztyr_jY5cPOyts+K8xKJ92X4Q@mail.gmail.com
Backpatch: 9.5, where UPSERT was introduced
Andres Freund [Sun, 8 Nov 2015 22:01:53 +0000 (23:01 +0100)]
Set replication origin when decoding commit records.
By accident the replication origin was not set properly in
DecodeCommit(). That's bad because the origin is passed to the output
plugins origin filter, and accessible from the output plugin via
ReorderBufferTXN->origin_id. Accessing the origin of individual changes
worked before the fix, which is why this wasn't notices earlier.
Reported-By: Craig Ringer
Author: Craig Ringer
Discussion: CAMsr+YFhBJLp=qfSz3-J+0P1zLkE8zNXM2otycn20QRMx380gw@mail.gmail.com
Backpatch: 9.5, where replication origins where introduced
Noah Misch [Sun, 8 Nov 2015 22:40:19 +0000 (17:40 -0500)]
Fix 9.5 version of previous commit to match its log message.
Noah Misch [Sun, 8 Nov 2015 22:28:53 +0000 (17:28 -0500)]
Don't connect() to a wildcard address in test_postmaster_connection().
At least OpenBSD, NetBSD, and Windows don't support it. This repairs
pg_ctl for listen_addresses='0.0.0.0' and listen_addresses='::'. Since
pg_ctl prefers to test a Unix-domain socket, Windows users are most
likely to need this change. Back-patch to 9.1 (all supported versions).
This could change pg_ctl interaction with loopback-interface firewall
rules. Therefore, in 9.4 and earlier (released branches), activate the
change only on known-affected platforms.
Reported (bug #13611) and designed by Kondo Yuta.