Commit Graph

5086 Commits

Author SHA1 Message Date
Peter Eisentraut 143b54d21d pg_basebackup: Fix progress messages when writing to a file
The progress messages print out \r to keep overwriting the same line on
the screen.  But this does not yield useful results when writing the
output to a file.  So in that case, print out \n instead.

Author: Martín Marqués <martin@2ndquadrant.com>
Reviewed-by: Arthur Zakirov <a.zakirov@postgrespro.ru>
2017-12-01 09:21:34 -05:00
Peter Eisentraut e4128ee767 SQL procedures
This adds a new object type "procedure" that is similar to a function
but does not have a return type and is invoked by the new CALL statement
instead of SELECT or similar.  This implementation is aligned with the
SQL standard and compatible with or similar to other SQL implementations.

This commit adds new commands CALL, CREATE/ALTER/DROP PROCEDURE, as well
as ALTER/DROP ROUTINE that can refer to either a function or a
procedure (or an aggregate function, as an extension to SQL).  There is
also support for procedures in various utility commands such as COMMENT
and GRANT, as well as support in pg_dump and psql.  Support for defining
procedures is available in all the languages supplied by the core
distribution.

While this commit is mainly syntax sugar around existing functionality,
future features will rely on having procedures as a separate object
type.

Reviewed-by: Andrew Dunstan <andrew.dunstan@2ndquadrant.com>
2017-11-30 11:03:20 -05:00
Robert Haas eaedf0df71 Update typedefs.list and re-run pgindent
Discussion: http://postgr.es/m/CA+TgmoaA9=1RWKtBWpDaj+sF3Stgc8sHgf5z=KGtbjwPLQVDMA@mail.gmail.com
2017-11-29 09:24:24 -05:00
Tom Lane 0772c152b9 Mark some more functions as pg_attribute_noreturn().
Doing this suppresses Coverity warnings and might allow improved
code in some cases.  The prospects of that are not so bright as
to warrant back-patching, though.

Michael Paquier, per Coverity
2017-11-27 20:56:46 -05:00
Magnus Hagander 2393194c0d Fix typo
Daniel Gustafsson
2017-11-22 21:52:28 +01:00
Simon Riggs 3bae43ca4d Sort default partition to bottom of psql \d+
Minor patch to change sort order only

Author: Ashutosh Bapat
Reviewed-by:  Álvaro Herrera, Simon Riggs
2017-11-23 05:17:47 +11:00
Simon Riggs 05b6ec39d7 Show partition info from psql \d+
Author: Amit Langote, Ashutosh Bapat
Reviewed-by:  Álvaro Herrera, Simon Riggs
2017-11-23 05:10:39 +11:00
Tom Lane 16827d4424 pgbench: fix stats reporting when some transactions are skipped.
pgbench can skip some transactions when both -R and -L options are used.
Previously, this resulted in slightly silly statistics both in progress
reports and final output, because the skipped transactions were counted
as executed for TPS and related stats.  Discount skipped xacts in TPS
numbers, and also when figuring the percentage of xacts exceeding the
latency limit.

Also, don't print per-script skipped-transaction counts when there is
only one script.  That's redundant with the overall count, and it's
inconsistent with the fact that we don't print other per-script stats
when there's only one script.  Clean up some unnecessary interactions
between what should be independent options that were due to that
decision.

While at it, avoid division-by-zero in cases where no transactions were
executed.  While on modern platforms this would generally result in
printing "NaN" rather than a crash, that isn't spelled consistently
across platforms and it would confuse many people.  Skip the relevant
output entirely when practical, else print zeroes.

Fabien Coelho, reviewed by Steve Singer, additional hacking by me

Discussion: https://postgr.es/m/26654.1505232433@sss.pgh.pa.us
2017-11-21 17:30:48 -05:00
Tom Lane 164d633878 Fix bogus logic for checking data dirs' versions within pg_upgrade.
Commit 9be95ef15 failed to cure all of the redundancy here: we were
actually calling get_major_server_version() three times for each
of the old and new data directories.  While that's not enormously
expensive, it's still sloppy.

A. Akenteva

Discussion: https://postgr.es/m/f9266a85d918a3cf3a386b5148aee666@postgrespro.ru
2017-11-16 11:16:53 -05:00
Tom Lane ed9b3606da Further refactoring of c.h and nearby files.
This continues the work of commit 91aec93e6 by getting rid of a lot of
Windows-specific funny business in "section 0".  Instead of including
pg_config_os.h in different places depending on platform, let's
standardize on putting it before the system headers, and in consequence
reduce win32.h to just what has to appear before the system headers or
the body of c.h (the latter category seems to include only PGDLLIMPORT
and PGDLLEXPORT).  The rest of what was in win32.h is moved to a new
sub-include of port.h, win32_port.h.  Some of what was in port.h seems
to better belong there too.

It's possible that I missed some declaration ordering dependency that
needs to be preserved, but hopefully the buildfarm will find that
out in short order.

Unlike the previous commit, no back-patch, since this is just cleanup
not a prerequisite for a bug fix.

Discussion: https://postgr.es/m/29650.1510761080@sss.pgh.pa.us
2017-11-16 10:36:21 -05:00
Tom Lane 591c504fad Allow running just selected steps of pgbench's initialization sequence.
This feature caters to specialized use-cases such as running the normal
pgbench scenario with nonstandard indexes, or inserting other actions
between steps of the initialization sequence.  The normal sequence of
initialization actions is broken down into half a dozen steps which can
be executed in a user-specified order, to the extent to which that's
sensible.  The actions themselves aren't changed, except to make them
more robust against nonstandard uses:

* all four tables are now dropped in one DROP command, to reduce
assumptions about what foreign key relationships exist;

* all four tables are now truncated at the start of the data load
step, for consistency;

* the foreign key creation commands now specify constraint names, to
prevent accidentally creating duplicate constraints by executing the
'f' step twice.

Make some cosmetic adjustments in the messages emitted by pgbench
so that it's clear which steps are getting run, and so that the
messages agree with the documented names of the steps.

In passing, fix failure to enforce that the -v option is used only
in benchmarking mode.

Masahiko Sawada, reviewed by Fabien Coelho, editorialized a bit by me

Discussion: https://postgr.es/m/CAD21AoCsz0ZzfCFcxYZ+PUdpkDd5VsCSG0Pre_-K1EgokCDFYA@mail.gmail.com
2017-11-13 16:40:09 -05:00
Peter Eisentraut 0e1539ba0d Add some const decorations to prototypes
Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr>
2017-11-10 13:38:57 -05:00
Robert Haas 1aba8e651a Add hash partitioning.
Hash partitioning is useful when you want to partition a growing data
set evenly.  This can be useful to keep table sizes reasonable, which
makes maintenance operations such as VACUUM faster, or to enable
partition-wise join.

At present, we still depend on constraint exclusion for partitioning
pruning, and the shape of the partition constraints for hash
partitioning is such that that doesn't work.  Work is underway to fix
that, which should both improve performance and make partitioning
pruning work with hash partitioning.

Amul Sul, reviewed and tested by Dilip Kumar, Ashutosh Bapat, Yugo
Nagata, Rajkumar Raghuwanshi, Jesper Pedersen, and by me.  A few
final tweaks also by me.

Discussion: http://postgr.es/m/CAAJ_b96fhpJAP=ALbETmeLk1Uni_GFZD938zgenhF49qgDTjaQ@mail.gmail.com
2017-11-09 18:07:44 -05:00
Tom Lane 9be95ef156 Fix bogus logic for checking executables' versions within pg_upgrade.
Somebody messed up a refactoring here.  As it stood, we'd check pg_ctl's
--version output twice for each cluster.  Worse, the first check for the
new cluster's version happened before we'd done any validate_exec checks
there, breaking the check ordering the code intended.

A. Akenteva

Discussion: https://postgr.es/m/f9266a85d918a3cf3a386b5148aee666@postgrespro.ru
2017-11-09 11:30:30 -05:00
Peter Eisentraut 2eb4a831e5 Change TRUE/FALSE to true/false
The lower case spellings are C and C++ standard and are used in most
parts of the PostgreSQL sources.  The upper case spellings are only used
in some files/modules.  So standardize on the standard spellings.

The APIs for ICU, Perl, and Windows define their own TRUE and FALSE, so
those are left as is when using those APIs.

In code comments, we use the lower-case spelling for the C concepts and
keep the upper-case spelling for the SQL concepts.

Reviewed-by: Michael Paquier <michael.paquier@gmail.com>
2017-11-08 11:37:28 -05:00
Simon Riggs 4b0d28de06 Remove secondary checkpoint
Previously server reserved WAL for last two checkpoints,
which used too much disk space for small servers.

Bumps PG_CONTROL_VERSION

Author: Simon Riggs <simon@2ndQuadrant.com>
Reviewed-by: Michael Paquier <michael.paquier@gmail.com>
2017-11-07 12:56:30 -05:00
Simon Riggs 98267ee83e Exclude pg_internal.init from BASE_BACKUP
Add docs to explain this for other backup mechanisms

Author: David Steele <david@pgmasters.net>
Reviewed-by: Petr Jelinek <petr.jelinek@2ndQuadrant.com> et al
2017-11-07 12:28:35 -05:00
Tom Lane d0c80c17f1 Fix version numbering foulups exposed by 10.1.
configure computed PG_VERSION_NUM incorrectly.  (Coulda sworn I tested
that logic back when, but it had an obvious thinko.)

pg_upgrade had not been taught about the new dispensation with just
one part in the major version number.

Both things accidentally failed to fail with 10.0, but with 10.1 we
got the wrong results.

Per buildfarm.
2017-11-06 19:46:52 -05:00
Magnus Hagander 86bc521811 Fix comment
Author: Bernd Helmle <mailings@oopsware.de>
2017-11-05 11:48:20 -05:00
Tom Lane f987f83de2 pgbench: replace run-time string comparisons with an enum identifier.
Minor refactoring that should yield some performance benefit.

Fabien Coelho, reviewed by Aleksandr Parfenov

Discussion: https://postgr.es/m/alpine.DEB.2.20.1709230538130.4999@lancre
2017-11-02 18:32:14 -04:00
Peter Eisentraut 4b0fbfdf81 pg_ctl: Improve message
Change message for restarting a server from a directory without a PID
file.  This accounts for the case where a restart happens after an
initdb.  The new message indicates that the start has not completed yet
and might fail.

Author: Jesper Pedersen <jesper.pedersen@redhat.com>
2017-11-02 13:27:42 -04:00
Peter Eisentraut 5eb8bf2d42 Remove wal_keep_segments from default configuration in PostgresNode.pm
This is only used in the pg_rewind tests, so only set it there.  It's
better if other tests run closer to a default configuration.

Author: Michael Paquier <michael.paquier@gmail.com>
2017-11-02 12:38:59 -04:00
Noah Misch 51f4d3ed7e In client support of v10 features, use standard schema handling.
Back-patch to v10.  This continues the work of commit
080351466c.

Discussion: https://postgr.es/m/CAKOSWN=ds66zLw2SqkLTM8wbXFgDbc_OdkmT3dJfPT2mE5kipA@mail.gmail.com
2017-11-01 19:16:14 -07:00
Peter Eisentraut 067a2259fd pg_basebackup: Fix comparison handling of tablespace mappings on Windows
A candidate path needs to be canonicalized before being checked against
the mappings, because the mappings are also canonicalized.  This is
especially relevant on Windows

Reported-by: nb <nbedxp@gmail.com>
Author: Michael Paquier <michael.paquier@gmail.com>
Reviewed-by: Ashutosh Sharma <ashu.coek88@gmail.com>
2017-11-01 10:20:05 -04:00
Tom Lane 080351466c Fix underqualified cast-target type names in pg_dump and psql queries.
Queries running with some non-pg_catalog schema frontmost in their search
path need to be careful to schema-qualify type names that should be sought
in pg_catalog.  Vitaly Burovoy reported an oversight of this sort in
pg_dump's dumpSequence, and grepping detected another one in psql's
describeOneTableDetails, both introduced by sequence-related changes in
v10.  In pg_dump, we can fix things by removing the cast altogether, since
it doesn't really matter what data types are reported for these query
result columns.  Likewise in psql, the query seemed to be working unduly
hard to get a result that's guaranteed to be exactly 'bigint'.

I also changed a couple of occurrences of "::char" similarly.  These are
not bugs, since "char" is a typename keyword and not subject to search_path
rules, but it seems better to use uniform style.

Vitaly Burovoy and Tom Lane

Discussion: https://postgr.es/m/CAKOSWN=ds66zLw2SqkLTM8wbXFgDbc_OdkmT3dJfPT2mE5kipA@mail.gmail.com
2017-10-31 13:40:23 -04:00
Robert Haas 5f3971291f pg_receivewal: Add --no-sync option.
Michael Paquier, reviewed by Kuntal Ghosh and by me.  I did a little
wordsmithing on the documentation, too.

Discussion: http://postgr.es/m/CAB7nPqTuXuyEoVKcWcExh_b0uAjgWd_14KfGLrCTccBZ=VA0KA@mail.gmail.com
2017-10-29 12:46:55 +05:30
Tom Lane 471d55859c Adjust psql \d query to avoid use of @> operator.
It seems that the parray_gin extension has seen fit to introduce a
"text[] @> text[]" operator, which conflicts with the core
"anyarray @> anyarray" operator, causing ambiguous-operator failures
if the input arguments are coercible to text[] without being exactly
that type.  This strikes me as a bad idea, but it's out there and
people use it.  As of v10, that breaks psql's query that tries to
test "pg_statistic_ext.stxkind @> '{d}'", since stxkind is char[].
The best workaround seems to be to avoid use of that operator.
We can use a scalar-vs-array test "'d' = any(stxkind)" instead;
that's arguably more readable anyway.

Per report from Justin Pryzby.  Backpatch to v10 where this
query was added.

Discussion: https://postgr.es/m/20171022181525.GA21884@telsasoft.com
2017-10-22 16:45:16 -04:00
Peter Eisentraut 4211673622 Exclude flex-generated code from coverage testing
Flex generates a lot of functions that are not actually used.  In order
to avoid coverage figures being ruined by that, mark up the part of the
.l files where the generated code appears by lcov exclusion markers.
That way, lcov will typically only reported on coverage for the .l file,
which is under our control, but not for the .c file.

Reviewed-by: Michael Paquier <michael.paquier@gmail.com>
2017-10-16 16:28:11 -04:00
Tom Lane 4de2d4fba3 Explicitly track whether aggregate final functions modify transition state.
Up to now, there's been hard-wired assumptions that normal aggregates'
final functions never modify their transition states, while ordered-set
aggregates' final functions always do.  This has always been a bit
limiting, and in particular it's getting in the way of improving the
built-in ordered-set aggregates to allow merging of transition states.
Therefore, let's introduce catalog and CREATE AGGREGATE infrastructure
that lets the finalfn's behavior be declared explicitly.

There are now three possibilities for the finalfn behavior: it's purely
read-only, it trashes the transition state irrecoverably, or it changes
the state in such a way that no more transfn calls are possible but the
state can still be passed to other, compatible finalfns.  There are no
examples of this third case today, but we'll shortly make the built-in
OSAs act like that.

This change allows user-defined aggregates to explicitly disclaim support
for use as window functions, and/or to prevent transition state merging,
if their implementations cannot handle that.  While it was previously
possible to handle the window case with a run-time error check, there was
not any way to prevent transition state merging, which in retrospect is
something commit 804163bc2 should have provided for.  But better late
than never.

In passing, split out pg_aggregate.c's extern function declarations into
a new header file pg_aggregate_fn.h, similarly to what we've done for
some other catalog headers, so that pg_aggregate.h itself can be safe
for frontend files to include.  This lets pg_dump use the symbolic
names for relevant constants.

Discussion: https://postgr.es/m/4834.1507849699@sss.pgh.pa.us
2017-10-14 15:21:39 -04:00
Tom Lane 3620569fec #ifdef out some dead code in psql/mainloop.c.
This pg_send_history() call is unreachable, since the block it's in
is currently only entered in !cur_cmd_interactive mode.  But rather
than just delete it, make it #ifdef NOT_USED, in hopes that we'll
remember to enable it if we ever change that decision.

Per report from David Binderman.  Since this is basically cosmetic,
I see no great need to back-patch.

Discussion: https://postgr.es/m/HE1PR0802MB233122B61F00A15E035C83BE9C710@HE1PR0802MB2331.eurprd08.prod.outlook.com
2017-10-06 11:35:55 -04:00
Andres Freund 0ba99c84e8 Replace most usages of ntoh[ls] and hton[sl] with pg_bswap.h.
All postgres internal usages are replaced, it's just libpq example
usages that haven't been converted. External users of libpq can't
generally rely on including postgres internal headers.

Note that this includes replacing open-coded byte swapping of 64bit
integers (using two 32 bit swaps) with a single 64bit swap.

Where it looked applicable, I have removed netinet/in.h and
arpa/inet.h usage, which previously provided the relevant
functionality. It's perfectly possible that I missed other reasons for
including those, the buildfarm will tell.

Author: Andres Freund
Discussion: https://postgr.es/m/20170927172019.gheidqy6xvlxb325@alap3.anarazel.de
2017-10-01 15:36:14 -07:00
Andres Freund 2e83db3ad2 Allow pg_ctl kill to send SIGKILL.
Previously that was disallowed out of an abundance of
caution. Providing KILL support however is helpful to make the
013_crash_restart.pl test portable, and there's no actual issue with
allowing it.  SIGABRT, which has similar consequences except it also
dumps core, was already allowed.

Author: Andres Freund
Discussion: https://postgr.es/m/45d42d41-6145-9be1-7261-84acf6d9e344@2ndQuadrant.com
2017-10-01 15:24:58 -07:00
Tom Lane 4a1c0f3dde Use a longer connection timeout in pg_isready test.
Buildfarm members skink and sungazer have both recently failed this
test, with symptoms indicating that the default 3-second timeout
isn't quite enough for those very slow systems.  There's no reason
to be miserly with this timeout, so boost it to 60 seconds.

Back-patch to all versions containing this test.  That may be overkill,
because the failure has only been observed in the v10 branch, but
I don't feel like having to revisit this later.
2017-10-01 12:43:46 -04:00
Heikki Linnakangas 396ef15618 Fix busy-wait in pgbench, with --rate.
If --rate was used to throttle pgbench, it failed to sleep when it had
nothing to do, leading to a busy-wait with 100% CPU usage. This bug was
introduced in the refactoring in v10. Before that, sleep() was called with
a timeout, even when there were no file descriptors to wait for.

Reported by Jeff Janes, patch by Fabien COELHO. Backpatch to v10.

Discussion: https://www.postgresql.org/message-id/CAMkU%3D1x5hoX0pLLKPRnXCy0T8uHoDvXdq%2B7kAM9eoC9_z72ucw%40mail.gmail.com
2017-10-01 09:29:27 +03:00
Tom Lane 2632bcce5e Fix pg_dump to assign domain array type OIDs during pg_upgrade.
During a binary upgrade, all type OIDs are supposed to be assigned by
pg_dump based on their values in the old cluster.  But now that domains
have arrays, there's nothing to base the arrays' type OIDs on, if we're
upgrading from a pre-v11 cluster.  Make pg_dump search for an unused type
OID to use for this purpose.  Per buildfarm.

Discussion: https://postgr.es/m/E1dyLlE-0002gT-H5@gemulon.postgresql.org
2017-09-30 17:05:07 -04:00
Robert Haas 69c16983e1 psql: Don't try to print a partition constraint we didn't fetch.
If \d rather than \d+ is used, then verbose is false and we don't ask
the server for the partition constraint; so we shouldn't print it in
that case either.

Maksim Milyutin, per a report from Jesper Pedersen.  Reviewed by
Jesper Pedersen and Amit Langote.

Discussion: http://postgr.es/m/2af5fc4d-7bcc-daa8-4fe6-86274bea363c@redhat.com
2017-09-29 15:59:11 -04:00
Robert Haas e55d9643ec pgbench: If we fail to send a command to the server, fail.
This beats the old behavior of busy-waiting hands down.

Oversight in commit 12788ae49e.

Report by Pavan Deolasee. Patch by Fabien Coelho.  Reviewed by
Pavan Deolasee.

Discussion: http://postgr.es/m/CABOikdPhfXTypckMC1Ux6Ko+hKBWwUBA=EXsvamXYSg8M9J94w@mail.gmail.com
2017-09-29 13:55:38 -04:00
Peter Eisentraut 2a14b9609d psql: Update \d sequence display
For \d sequencename, the psql code just did SELECT * FROM sequencename
to get the information to display, but this does not contain much
interesting information anymore in PostgreSQL 10, because the metadata
has been moved to a separate system catalog.

This patch creates a newly designed sequence display that is not merely
an extension of the general relation/table display as it was previously.

Example:

PostgreSQL 9.6:

=> \d foobar
           Sequence "public.foobar"
    Column     |  Type   |        Value
---------------+---------+---------------------
 sequence_name | name    | foobar
 last_value    | bigint  | 1
 start_value   | bigint  | 1
 increment_by  | bigint  | 1
 max_value     | bigint  | 9223372036854775807
 min_value     | bigint  | 1
 cache_value   | bigint  | 1
 log_cnt       | bigint  | 0
 is_cycled     | boolean | f
 is_called     | boolean | f

PostgreSQL 10 before this change:

=> \d foobar
   Sequence "public.foobar"
   Column   |  Type   | Value
------------+---------+-------
 last_value | bigint  | 1
 log_cnt    | bigint  | 0
 is_called  | boolean | f

New:

=> \d foobar
                           Sequence "public.foobar"
  Type  | Start | Minimum |       Maximum       | Increment | Cycles? | Cache
--------+-------+---------+---------------------+-----------+---------+-------
 bigint |     1 |       1 | 9223372036854775807 |         1 | no      |     1

Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr>
2017-09-29 13:37:30 -04:00
Peter Eisentraut 3709ca1cf0 pg_basebackup: Add option to create replication slot
When requesting a particular replication slot, the new pg_basebackup
option -C/--create-slot creates it before starting to replicate from it.

Further refactor the slot creation logic to include the temporary slot
creation logic into the same function.  Add new arguments is_temporary
and preserve_wal to CreateReplicationSlot().  Print in --verbose mode
that a slot has been created.

Author: Michael Banck <michael.banck@credativ.de>
2017-09-27 08:49:47 -04:00
Peter Eisentraut fa41461205 Add some more pg_receivewal tests
Add some more tests for the --create-slot and --drop-slot options,
verifying that the right kind of slot was created and that the slot was
dropped.  While working on an unrelated patch for pg_basebackup, some of
this was temporarily broken without any tests noticing.
2017-09-26 16:41:20 -04:00
Peter Eisentraut 15a8010ed6 Sort pg_basebackup options better
The --slot option somehow ended up under options controlling the output,
and some other options were in a nonsensical place or were not moved
after recent renamings, so tidy all that up a bit.
2017-09-26 11:58:22 -04:00
Peter Eisentraut 74ca8f9b90 Fix pg_basebackup test to original intent
One test case was meant to check that pg_basebackup does not succeed
when a slot is specified with -S but WAL streaming is not selected,
which used to require specifying -X stream.  Since -X stream is the
default in PostgreSQL 10, this test case no longer covers that meaning,
but the pg_basebackup invocation happened to fail anyway for the
unrelated reason that the specified replication slot does not exist.  To
fix, move the test case to later in the file where the slot does exist,
and add -X none to the invocation so that it covers the originally meant
behavior.

extracted from a patch by Michael Banck <michael.banck@credativ.de>
2017-09-23 22:59:26 -04:00
Tom Lane ad51c6fb57 Remove pgbench "progress" test pending solution of its timing issues.
Buildfarm member skink shows that this is even more flaky than
I thought.  There are probably some actual pgbench bugs here
as well as a timing dependency.  But we can't have stuff this
unstable in the buildfarm, it obscures other issues.
2017-09-23 13:02:30 -04:00
Peter Eisentraut 58ffe141eb Revert "Add basic TAP test setup for pg_upgrade"
This reverts commit f41e56c76e.

The build farm client would run the pg_upgrade tests twice, once as part
of the existing pg_upgrade check run and once as part of picking up all
TAP tests by looking for "t" directories.  Since the pg_upgrade tests
are pretty slow, we will need a better solution or possibly a build farm
client change before we can proceed with this.
2017-09-22 16:46:56 -04:00
Tom Lane 0f574a7afb Allow up to 3 "-P 1" reports per thread in pgbench run of 2 seconds.
There seems to be some considerable imprecision in the timing of -P
progress reports.  Nominally each thread ought to produce 2 reports
in this test, but about 10% of the time we only get one, and 1% of
the time we get three, as per buildfarm results so far.  Pending
further investigation, treat the last case as a "pass".  (I, tgl,
am suspicious that this still might not be lax enough, now that it's
obvious that the behavior is load-dependent; but there's not yet
buildfarm evidence to confirm that suspicion.)

Fabien Coelho

Discussion: https://postgr.es/m/26654.1505232433@sss.pgh.pa.us
2017-09-22 12:59:44 -04:00
Andrew Dunstan d57c7a7c50 Provide a test for variable existence in psql
"\if :{?variable_name}" will be translated to "\if TRUE" if the variable
exists and "\if FALSE" otherwise. Thus it will be possible to execute code
conditionally on the existence of the variable, regardless of its value.

Fabien Coelho, with some review by Robins Tharakan and some light text
editing by me.

Discussion: https://postgr.es/m/alpine.DEB.2.20.1708260835520.3627@lancre
2017-09-21 19:02:23 -04:00
Peter Eisentraut d42294fc00 Fix compiler warning
from gcc-7 -Wformat-truncation (via -Wall)
2017-09-20 09:03:04 -04:00
Andres Freund fc49e24fa6 Make WAL segment size configurable at initdb time.
For performance reasons a larger segment size than the default 16MB
can be useful. A larger segment size has two main benefits: Firstly,
in setups using archiving, it makes it easier to write scripts that
can keep up with higher amounts of WAL, secondly, the WAL has to be
written and synced to disk less frequently.

But at the same time large segment size are disadvantageous for
smaller databases. So far the segment size had to be configured at
compile time, often making it unrealistic to choose one fitting to a
particularly load. Therefore change it to a initdb time setting.

This includes a breaking changes to the xlogreader.h API, which now
requires the current segment size to be configured.  For that and
similar reasons a number of binaries had to be taught how to recognize
the current segment size.

Author: Beena Emerson, editorialized by Andres Freund
Reviewed-By: Andres Freund, David Steele, Kuntal Ghosh, Michael
    Paquier, Peter Eisentraut, Robert Hass, Tushar Ahuja
Discussion: https://postgr.es/m/CAOG9ApEAcQ--1ieKbhFzXSQPw_YLmepaa4hNdnY5+ZULpt81Mw@mail.gmail.com
2017-09-19 22:03:48 -07:00
Peter Eisentraut f41e56c76e Add basic TAP test setup for pg_upgrade
The plan is to convert the current pg_upgrade test to the TAP
framework.  This commit just puts a basic TAP test in place so that we
can see how the build farm behaves, since the build farm client has some
special knowledge of the pg_upgrade tests.

Author: Michael Paquier <michael.paquier@gmail.com>
2017-09-19 18:51:25 -04:00
Peter Eisentraut 98470fdfa7 pg_archivecleanup: Add test suite
Reviewed-by: David Steele <david@pgmasters.net>
2017-09-14 22:23:00 -04:00
Stephen Frost d2e40b310a Fix ordering in pg_dump of GRANTs
The order in which GRANTs are output is important as GRANTs which have
been GRANT'd by individuals via WITH GRANT OPTION GRANTs have to come
after the GRANT which included the WITH GRANT OPTION.  This happens
naturally in the backend during normal operation as we only change
existing ACLs in-place, only add new ACLs to the end, and when removing
an ACL we remove any which depend on it also.

Also, adjust the comments in acl.h to make this clear.

Unfortunately, the updates to pg_dump to handle initial privileges
involved pulling apart ACLs and then combining them back together and
could end up putting them back together in an invalid order, leading to
dumps which wouldn't restore.

Fix this by adjusting the queries used by pg_dump to ensure that the
ACLs are rebuilt in the same order in which they were originally.

Back-patch to 9.6 where the changes for initial privileges were done.
2017-09-13 20:02:09 -04:00
Tom Lane 69835bc898 Add psql variables to track success/failure of SQL queries.
This patch adds ERROR, SQLSTATE, and ROW_COUNT, which are updated after
every query, as well as LAST_ERROR_MESSAGE and LAST_ERROR_SQLSTATE,
which are updated only when a query fails.  The expected usage of these
is for scripting.

Fabien Coelho, reviewed by Pavel Stehule

Discussion: https://postgr.es/m/alpine.DEB.2.20.1704042158020.12290@lancre
2017-09-12 19:27:48 -04:00
Peter Eisentraut 6d9fa52645 pg_receivewal: Add --endpos option
This is primarily useful for making tests of this utility more
deterministic, to avoid the complexity of starting pg_receivewal as a
deamon in TAP tests.

While this is less useful than the equivalent pg_recvlogical option,
users can as well use it for example to enforce WAL streaming up to a
end-of-backup position, to save only a minimal amount of WAL.

Use this new option to stream WAL data in a deterministic way within a
new set of TAP tests.

Author: Michael Paquier <michael.paquier@gmail.com>
2017-09-11 16:48:30 -04:00
Peter Eisentraut 821fb8cdbf Message style fixes 2017-09-11 11:21:27 -04:00
Peter Eisentraut c824c7e29f pg_upgrade: Message style fixes 2017-09-09 17:32:10 -04:00
Tom Lane f25000c832 Fix more portability issues in new pgbench TAP tests.
Not completely sure, but I think bowerbird is spitting up on attempting
to include ">" in a temporary file name.  (Why in the world are we
writing this stuff into files at all?  A hash would be a better answer.)
2017-09-08 17:37:59 -04:00
Robert Haas 6f6b99d133 Allow a partitioned table to have a default partition.
Any tuples that don't route to any other partition will route to the
default partition.

Jeevan Ladhe, Beena Emerson, Ashutosh Bapat, Rahila Syed, and Robert
Haas, with review and testing at various stages by (at least) Rushabh
Lathia, Keith Fiske, Amit Langote, Amul Sul, Rajkumar Raghuanshi, Sven
Kunze, Kyotaro Horiguchi, Thom Brown, Rafia Sabih, and Dilip Kumar.

Discussion: http://postgr.es/m/CAH2L28tbN4SYyhS7YV1YBWcitkqbhSWfQCy0G=apRcC_PEO-bg@mail.gmail.com
Discussion: http://postgr.es/m/CAOG9ApEYj34fWMcvBMBQ-YtqR9fTdXhdN82QEKG0SVZ6zeL1xg@mail.gmail.com
2017-09-08 17:28:04 -04:00
Tom Lane 2cf15ec8b1 Fix pgbench TAP tests to work with --disable-thread-safety.
Probably matters to nobody but me; but I'd like to still be able to get
through the TAP tests on gaur/pademelon, from time to time.
2017-09-08 17:25:11 -04:00
Tom Lane 933851033b Fix more portability issues in new pgbench TAP tests.
Strike two on the --bad-option test.
Three strikes and it's out.

Fabien Coelho, per buildfarm
2017-09-08 14:01:51 -04:00
Tom Lane 77d63b7eaf Fix more portability issues in new pgbench TAP tests.
* Remove no-such-user test case, output isn't stable, and we really
don't need to be testing such cases here anyway.

* Fix the process exit code test logic to match PostgresNode::psql
(but I didn't bother with looking at the "core" flag).

* Give up on inf/nan tests.

Per buildfarm.
2017-09-08 13:36:13 -04:00
Peter Eisentraut ee24d2b5cf Clean up excessive code
The encoding ID was converted between string and number too many times,
probably a remnant from the shell script days.

Reviewed-by: Aleksandr Parfenov <a.parfenov@postgrespro.ru>
2017-09-08 12:37:05 -04:00
Peter Eisentraut 8e67380126 Remove useless empty string initializations
This coding style probably stems from the days of shell scripts.

Reviewed-by: Aleksandr Parfenov <a.parfenov@postgrespro.ru>
2017-09-08 12:37:05 -04:00
Tom Lane 869aa40a27 Fix assorted portability issues in new pgbench TAP tests.
* Our own version of getopt_long doesn't support abbreviation of
long options.

* It doesn't do automatic rearrangement of non-option arguments to the end,
either.

* Test was way too optimistic about the platform independence of
NaN and Infinity outputs.  I rather imagine we might have to lose
those tests altogether, but for the moment just allow case variation
and fully spelled out Infinity.

Per buildfarm.
2017-09-08 11:28:02 -04:00
Tom Lane ed8a7c6fcf Add much-more-extensive TAP tests for pgbench.
Fabien Coelho, reviewed by Nikolay Shaplov and myself

Discussion: https://postgr.es/m/alpine.DEB.2.20.1704171422500.4025@lancre
2017-09-08 09:32:50 -04:00
Peter Eisentraut 1356f78ea9 Reduce excessive dereferencing of function pointers
It is equivalent in ANSI C to write (*funcptr) () and funcptr().  These
two styles have been applied inconsistently.  After discussion, we'll
use the more verbose style for plain function pointer variables, to make
it clear that it's a variable, and the shorter style when the function
pointer is in a struct (s.func() or s->func()), because then it's clear
that it's not a plain function name, and otherwise the excessive
punctuation makes some of those invocations hard to read.

Discussion: https://www.postgresql.org/message-id/f52c16db-14ed-757d-4b48-7ef360b1631d@2ndquadrant.com
2017-09-07 13:56:09 -04:00
Tom Lane ca4e20fde8 Merge duplicative code for \sf/\sv, \ef/\ev in psql/command.c.
Saves ~150 lines, costs little.

Fabien Coelho, reviewed by Victor Drobny

Discussion: https://postgr.es/m/alpine.DEB.2.20.1703311958001.14355@lancre
2017-09-06 17:32:40 -04:00
Simon Riggs 5b6d13eec7 Allow SET STATISTICS on expression indexes
Index columns are referenced by ordinal number rather than name, e.g.
CREATE INDEX coord_idx ON measured (x, y, (z + t));
ALTER INDEX coord_idx ALTER COLUMN 3 SET STATISTICS 1000;

Incompatibility note for release notes:
\d+ for indexes now also displays Stats Target

Authors: Alexander Korotkov, with contribution by Adrien NAYRAT
Review: Adrien NAYRAT, Simon Riggs
Wordsmith: Simon Riggs
2017-09-06 13:46:01 -07:00
Tom Lane 49ca462eb1 Add \gdesc psql command.
This command acts somewhat like \g, but instead of executing the query
buffer, it merely prints a description of the columns that the query
result would have.  (Of course, this still requires parsing the query;
if parse analysis fails, you get an error anyway.)  We accomplish this
using an unnamed prepared statement, which should be invisible to psql
users.

Pavel Stehule, reviewed by Fabien Coelho

Discussion: https://postgr.es/m/CAFj8pRBhYVvO34FU=EKb=nAF5t3b++krKt1FneCmR0kuF5m-QA@mail.gmail.com
2017-09-05 18:17:47 -04:00
Peter Eisentraut 90627cf98a Support retaining data dirs on successful TAP tests
This moves the data directories from using temporary directories with
randomness in the directory name to a static name, to make it easier to
debug.  The data directory will be retained if tests fail or the test
code dies/exits with failure, and is automatically removed on the next
make check.

If the environment variable PG_TEST_NOCLEAN is defined, the data
directories will be retained regardless of test or exit status.

Author: Daniel Gustafsson <daniel@yesql.se>
2017-09-05 12:24:06 -04:00
Tom Lane 5e8304fdce In psql, use PSQL_PAGER in preference to PAGER, if it's set.
This allows the user's environment to set up a psql-specific choice
of pager, in much the same way that we provide PSQL_EDITOR to allow
a psql-specific override of the more widely known EDITOR variable.

Pavel Stehule, reviewed by Thomas Munro

Discussion: https://postgr.es/m/CAFj8pRD3RRk9S1eRbnGm_T6brc3Ss5mohraNzTSJquzx+pmtKA@mail.gmail.com
2017-09-05 12:02:13 -04:00
Tom Lane 9ae9d8c154 Add psql variables showing server version and psql version.
We already had a psql variable VERSION that shows the verbose form of
psql's own version.  Add VERSION_NAME to show the short form (e.g.,
"11devel") and VERSION_NUM to show the numeric form (e.g., 110000).
Also add SERVER_VERSION_NAME and SERVER_VERSION_NUM to show the short and
numeric forms of the server's version.  (We'd probably add SERVER_VERSION
with the verbose string if it were readily available; but adding another
network round trip to get it seems too expensive.)

The numeric forms, in particular, are expected to be useful for scripting
purposes, now that psql can do conditional tests.

Fabien Coelho, reviewed by Pavel Stehule

Discussion: https://postgr.es/m/alpine.DEB.2.20.1704020917220.4632@lancre
2017-09-05 10:51:36 -04:00
Tom Lane 3955c8c4ed Reformat psql's --help=variables output.
The previous format with variable names and descriptions in separate
columns was extremely constraining about the length of the descriptions.
We'd dealt with that in several inconsistent ways over the years,
including letting the lines run over 80 characters, breaking descriptions
into multiple lines, or shoving the description onto a separate line.
But it's been a long time since the output could realistically fit onto
a single screen vertically, so let's just rely even more heavily on the
pager to deal with the vertical distance, and split each entry into two
(or more) lines, in the format

  variable-name
    variable description goes here

Each variable name + description remains a single translatable string,
in hopes of reducing translator confusion; we're just changing the
embedded whitespace.

I failed to resist the temptation to copy-edit one or two of the
descriptions while at it.

Discussion: https://postgr.es/m/2947.1504542679@sss.pgh.pa.us
2017-09-05 10:17:10 -04:00
Tom Lane 0b707d6ea7 Be more careful about newline-chomping in pgbench.
process_backslash_command would drop the last character of the input
command on the assumption that it was a newline.  Given a non newline
terminated input file, this could result in dropping the last character
of the command.  Fix that by doing an actual test that we're removing
a newline.

While at it, allow for Windows newlines (\r\n), and suppress multiple
newlines if any.  I do not think either of those cases really occur,
since (a) we read script files in text mode and (b) the lexer stops
when it hits a newline.  But it's cheap enough and it provides a
stronger guarantee about what the result string looks like.

This is just cosmetic, I think, since the possibly-overly-chomped
line was only used for display not for further processing.  So
it doesn't seem necessary to back-patch.

Fabien Coelho, reviewed by Nikolay Shaplov, whacked around a bit by me

Discussion: https://postgr.es/m/alpine.DEB.2.20.1704171422500.4025@lancre
2017-09-04 17:25:31 -04:00
Tom Lane c23bb6badf Fix some subtle problems in pgbench transaction stats counting.
With --latency-limit, transactions might get skipped even beyond the
transaction count limit specified by -t, throwing off the expected
number of transactions and thus the denominator for later stats.
Be sure to stop skipping transactions once -t is reached.

Also, include skipped transactions in the "cnt" fields; this requires
discounting them again in a couple of places, but most places are
better off with this definition.  In particular this is needed to
get correct overall stats for the combination of -R/-L/-t options.
Merge some more processing into processXactStats() to simplify this.

In passing, add a check that --progress-timestamp is specified only
when --progress is.

We might consider back-patching this, but given that it only matters
for a combination of options, and given the lack of field complaints,
consensus seems to be not to bother.

Fabien Coelho, reviewed by Nikolay Shaplov

Discussion: https://postgr.es/m/alpine.DEB.2.20.1704171422500.4025@lancre
2017-09-04 16:24:08 -04:00
Tom Lane 9d36a38660 Adjust pgbench to allow non-ASCII characters in variable names.
This puts it in sync with psql's notion of what is a valid variable name.
Like psql, we document that "non-Latin letters" are allowed, but actually
any non-ASCII character is accepted.

Fabien Coelho

Discussion: https://postgr.es/m/20170405.094548.1184280384967203518.t-ishii@sraoss.co.jp
2017-09-04 13:45:20 -04:00
Alvaro Herrera 863d75439e Fix translatable string
Discussion: https://postgr.es/m/20170828130545.sdajqlpr37hmmd6a@alvherre.pgsql
2017-09-04 11:08:52 +02:00
Robert Haas 84be67181a pg_dumpall: Add a -E flag to set the encoding, like pg_dump has.
Michael Paquier, reviewed by Fabien Coelho

Discussion: http://postgr.es/m/CAB7nPqQcYWmrm2n-dVaMUhYPKFU_DxQwPuUGuC4ZF+8B=dS5xQ@mail.gmail.com
2017-09-01 12:24:20 -04:00
Peter Eisentraut 2073c641b4 pg_test_timing: Some NLS fixes
The string "% of total" was marked by xgettext to be a c-format, but it
is actually not, so mark up the source to prevent that.

Compute the column widths of the final display dynamically based on the
translated strings, so that translations don't mess up the display
accidentally.
2017-08-26 09:25:19 -04:00
Peter Eisentraut 99ce446ada pg_upgrade: Remove more dead code
related to 6ce6a61840

Reported-by: Christoph Berg <myon@debian.org>
2017-08-25 12:02:29 -04:00
Peter Eisentraut e86ac70d6e Message translatability fixes 2017-08-25 11:52:31 -04:00
Stephen Frost 0cdc3e47be psql: Fix \gx when FETCH_COUNT is used
Set expanded output when requested through \gx in ExecQueryUsingCursor()
(used when FETCH_COUNT is set).

Discussion: https://www.postgresql.org/message-id/CB7A53AA-5645-4BDD-AB07-4D22CD9D8FF1%40gmx.net
Author: Tobias Bussmann
2017-08-24 16:20:50 -04:00
Peter Eisentraut 6ce6a61840 pg_upgrade: Remove dead code
Remove code meant for upgrading to a particular version of PostgreSQL
9.0.  Since pg_upgrade only supports upgrading to the current major
version, this code is no longer useful.
2017-08-24 15:29:35 -04:00
Peter Eisentraut 7e046e6e8a pg_upgrade: Message translatability and style fixes 2017-08-22 20:32:17 -04:00
Tom Lane b1c2d76a2f Fix possible core dump in parallel restore when using a TOC list.
Commit 3eb9a5e7c unintentionally introduced an ordering dependency
into restore_toc_entries_prefork().  The existing coding of
reduce_dependencies() contains a check to skip moving a TOC entry
to the ready_list if it wasn't initially in the pending_list.
This used to suffice to prevent reduce_dependencies() from trying to
move anything into the ready_list during restore_toc_entries_prefork(),
because the pending_list stayed empty throughout that phase; but it no
longer does.  The problem doesn't manifest unless the TOC has been
reordered by SortTocFromFile, which is how I missed it in testing.

To fix, just add a test for ready_list == NULL, converting the call
with NULL from a poor man's sanity check into an explicit command
not to touch TOC items' list membership.  Clarify some of the comments
around this; in particular, note the primary purpose of the check for
pending_list membership, which is to ensure that we can't try to restore
the same item twice, in case a TOC list forces it to be restored before
its dependency count goes to zero.

Per report from Fabrízio de Royes Mello.  Back-patch to 9.3, like the
previous commit.

Discussion: https://postgr.es/m/CAFcNs+pjuv0JL_x4+=71TPUPjdLHOXA4YfT32myj_OrrZb4ohA@mail.gmail.com
2017-08-19 13:39:51 -04:00
Peter Eisentraut cf851519d4 pg_dump: Support using synchronized snapshots on standbys
This became possible by commit
6c2003f8a1.  This just makes pg_dump aware
of it and updates the documentation.

Author: Petr Jelinek <petr.jelinek@2ndquadrant.com>
2017-08-16 19:46:50 -04:00
Peter Eisentraut 77d05706be Fix up some misusage of appendStringInfo() and friends
Change to appendStringInfoChar() or appendStringInfoString() where those
can be used.

Author: David Rowley <david.rowley@2ndquadrant.com>
Reviewed-by: Ashutosh Bapat <ashutosh.bapat@enterprisedb.com>
2017-08-15 23:34:39 -04:00
Peter Eisentraut 514731af58 pg_receivewal: Improve verbose mode
Some informational messages showed up even if verbose mode was not
used.  Move them to verbose mode.

Author: Michael Paquier <michael.paquier@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
2017-08-15 20:25:37 -04:00
Peter Eisentraut 0f0ee68e94 psql: Add tab completion for \pset pager
Author: Pavel Stehule <pavel.stehule@gmail.com>
2017-08-15 19:12:29 -04:00
Robert Haas 23d7680d04 pg_dump: Add a --load-via-partition-root option.
Rushabh Lathia, reviewed and somewhat revised by me.  Testing by
Rajkumar Raghuwanshi.

Discussion: http://postgr.es/m/CAGPqQf0C1he087bz9xRBOGZBuESYz9X=Fp8Ca_g+TfHgAff75g@mail.gmail.com
2017-08-14 22:54:41 -04:00
Tom Lane 21d304dfed Final pgindent + perltidy run for v10. 2017-08-14 17:29:33 -04:00
Peter Eisentraut d4ede668d6 pg_upgrade: Clarify one message
Reported-by: Dennis Björklund <db@zigo.dhs.org>
2017-08-11 15:44:10 -04:00
Tom Lane 7968184429 Remove pgbench's restriction on placement of -M switch.
Previously the -M switch had to appear before any switch that directly
or indirectly specified a benchmarking script.  This was both confusing
and inadequately documented, as per gripe from Tatsuo Ishii.  We can
remove the restriction at the cost of making an extra pass over the
lists of SQL commands, which seems like a cheap price (the string scans
themselves likely cost much more).  The change is just to not extract
parameters from the SQL commands until we have finished parsing the
switches and know the final value of -M.

Per discussion, we'll treat this as a low-grade bug fix and sneak it
into v10, rather than holding it for v11.

Tom Lane, reviewed by Tatsuo Ishii and Fabien Coelho

Discussion: https://postgr.es/m/20170802.110328.1963639094551443169.t-ishii@sraoss.co.jp
Discussion: https://postgr.es/m/10208.1502465077@sss.pgh.pa.us
2017-08-11 15:19:40 -04:00
Peter Eisentraut a1ef920e27 Remove uses of "slave" in replication contexts
This affects mostly code comments, some documentation, and tests.
Official APIs already used "standby".
2017-08-10 22:55:41 -04:00
Peter Eisentraut f7668b2b35 Translation updates
Source-Git-URL: git://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash: 1a0b5e655d7871506c2b1c7ba562c2de6b6a55de
2017-08-07 13:55:34 -04:00
Peter Eisentraut 26d40ada3f Message style improvements 2017-08-04 18:31:32 -04:00
Tom Lane 3eb9a5e7c4 Fix pg_dump/pg_restore to emit REFRESH MATERIALIZED VIEW commands last.
Because we push all ACL (i.e. GRANT/REVOKE) restore steps to the end,
materialized view refreshes were occurring while the permissions on
referenced objects were still at defaults.  This led to failures if,
say, an MV owned by user A reads from a table owned by user B, even
if B had granted the necessary privileges to A.  We've had multiple
complaints about that type of restore failure, most recently from
Jordan Gigov.

The ideal fix for this would be to start treating ACLs as dependency-
sortable objects, rather than hard-wiring anything about their dump order
(the existing approach is a messy kluge dating to commit dc0e76ca3).
But that's going to be a rather major change, and it certainly wouldn't
lead to a back-patchable fix.  As a short-term solution, convert the
existing two-pass hack (ie, normal objects then ACLs) to a three-pass hack,
ie, normal objects then ACLs then matview refreshes.  Because this happens
in RestoreArchive(), it will also fix the problem when restoring from an
existing archive-format dump.

(Note this means that if a matview refresh would have failed under the
permissions prevailing at dump time, it'll fail during restore as well.
We'll define that as user error rather than something we should try
to work around.)

To avoid performance loss in parallel restore, we need the matview
refreshes to still be parallelizable.  Hence, clean things up enough
so that both ACLs and matviews are handled by the parallel restore
infrastructure, instead of reverting back to serial restore for ACLs.
There is still a final serial step, but it shouldn't normally have to
do anything; it's only there to try to recover if we get stuck due to
some problem like unresolved circular dependencies.

Patch by me, but it owes something to an earlier attempt by Kevin Grittner.
Back-patch to 9.3 where materialized views were introduced.

Discussion: https://postgr.es/m/28572.1500912583@sss.pgh.pa.us
2017-08-03 17:36:39 -04:00
Alvaro Herrera 9a3b5d3ad0 Fix build on zlib-less environments
Commit 4d57e83816 added support for getting I/O errors out of zlib,
but it introduced a portability problem for systems without zlib.
Repair by wrapping the zlib call inside #ifdef and restore the original
code in the other branch.

This serves to illustrate the inadequacy of the zlib abstraction in
pg_backup_archiver: there is no way to call gzerror() in that
abstraction.  This means that the several places that call GZREAD and
GZWRITE are currently doing error reporting wrongly, but ENOTIME to get
it fixed before next week's release set.

Backpatch to 9.4, like the commit that introduced the problem.
2017-08-03 14:54:28 -04:00
Peter Eisentraut 5ff3d73813 Add new files to nls.mk and add translation markers 2017-08-02 22:45:48 -04:00
Alvaro Herrera 4d57e83816 Fix pg_dump's errno checking for zlib I/O
Some error reports were reporting strerror(errno), which for some error
conditions coming from zlib are wrong, resulting in confusing reports
such as
  pg_restore: [compress_io] could not read from input file: Success
which makes no sense.  To correctly extract the error message we need to
use gzerror(), so let's do that.

This isn't as comprehensive or as neat as I would like, but at least it
should improve things in many common cases.  The zlib abstraction in
compress_io does not seem to be applied consistently enough; we could
perhaps improve that, but it seems master-only material, not a bug fix
for back-patching.

This problem goes back all the way, but I decided to apply back to 9.4
only, because older branches don't contain commit 14ea89366 which this
change depends on.

Authors: Vladimir Kunschikov, Álvaro Herrera
Discussion: https://postgr.es/m/1498120508308.9826@infotecs.ru
2017-08-02 18:26:59 -04:00
Peter Eisentraut 0b02e3f128 Fix typo
Author: Masahiko Sawada <sawada.mshk@gmail.com>
2017-07-31 17:22:47 -04:00