Tom Lane [Fri, 8 Jul 2005 04:07:26 +0000 (04:07 +0000)]
Even though I'd like to see full_page_writes go away before 8.1,
a minimum requirement is that it not completely break the system
meanwhile. Put the test in the right place.
Tom Lane [Thu, 7 Jul 2005 20:40:02 +0000 (20:40 +0000)]
Track dependencies on shared objects (which is to say, roles; we already
have adequate mechanisms for tracking the contents of databases and
tablespaces). This solves the longstanding problem that you can drop a
user who still owns objects and/or has access permissions.
Alvaro Herrera, with some kibitzing from Tom Lane.
Bruce Momjian [Thu, 7 Jul 2005 16:02:06 +0000 (16:02 +0000)]
Update:
< writer.
> writer. It might cause problems for applying WAL on recovery
> into a partially-written page, but later the full page will be
> replaced from WAL.
Bruce Momjian [Thu, 7 Jul 2005 15:18:26 +0000 (15:18 +0000)]
Update:
>
> o -Add ability to turn off full page writes
> o When off, write CRC to WAL and check file system blocks
> on recovery
> o Write full pages during file system write and not when
> the page is modified in the buffer cache
>
> This allows most full page writes to happen in the background
> writer.
Bruce Momjian [Wed, 6 Jul 2005 22:44:49 +0000 (22:44 +0000)]
Currently, nonfatal warnings are not trapped (as they should be) by
plperl - the attached small patch remedies that omission, and adds a
small regression test for error and warning output - the new regression
input and expected output are in separate attached files.
Support cross compilation by compiling "zic" with a native compiler.
This relies on the output of zic being platform independent, but that is
currently the case.
Tom Lane [Wed, 6 Jul 2005 16:42:10 +0000 (16:42 +0000)]
Add a check for trigger function with declared arguments. This path
could not be reached before, but now that there is a plpgsql validator
function, it can be. Check is needed to prevent core dump reported by
Satoshi Nagayasu. Besides, this gives a more specific and useful
error message for a fairly common novice error.
Bruce Momjian [Wed, 6 Jul 2005 03:14:48 +0000 (03:14 +0000)]
Attached is a patch that enhances the "\h" capability in psql. I often
find myself typing a command and then wanting to get the syntax for it.
So I do a ctrl-a and add a \h: but psql does not recognize the command,
because I have stuff attached to it (e.g. "alter table foobar"), so I
have to scroll over and delete everything except the name of the command
itself. This patch gives \h three chances to match: if nothing matches
the complete string (current behavior), it tries to match the first two
words (e.g. "ALTER TABLE"). If that fails, it tries to match the first
word (e.g. "DELETE").
Tom Lane [Tue, 5 Jul 2005 23:18:44 +0000 (23:18 +0000)]
Dept of second thoughts: don't expose rijndael.tbl: rijndael.c dependency
to make. We ship the table file in the tarball and so this dependency
just opens file timestamp skew problems without doing anything useful.
(Not that it should hurt, either ... except for cross-compile builds.)
This patch allows the PL/Python module to do (SRF) functions.
The patch was taken from the CVS version.
I have modified the plpython.c file and have added a test sql script for
testing the functionality. It was actually the script that was in the
8.0.3 version but have since been removed.
In order to signal the end of a set, the called python function must
simply return plpy.EndOfSet and the set would be returned.
Bruce Momjian [Mon, 4 Jul 2005 19:03:30 +0000 (19:03 +0000)]
This patch allows the PL/Python module to do (SRF) functions.
The patch was taken from the CVS version.
I have modified the plpython.c file and have added a test sql script for
testing the functionality. It was actually the script that was in the
8.0.3 version but have since been removed.
In order to signal the end of a set, the called python function must
simply return plpy.EndOfSet and the set would be returned.
Bruce Momjian [Mon, 4 Jul 2005 18:56:44 +0000 (18:56 +0000)]
I made the patch that improved the performance of replace_text().
The content of the patch is as follows:
(1)Create shortcut when subtext was not found.
(2)Stop using LEFT and RIGHT macro.
In LEFT and RIGHT macro, TEXTPOS is executed by the same content as
execution immediately before. The execution frequency of TEXTPOS can be
reduced by using text_substring instead of LEFT and RIGHT macro.
(3)Add appendStringInfoText, and use it instead of
appendStringInfoString.
There is an overhead of PG_TEXT_GET_STR when appendStringInfoString is
executed by text type. This can be reduced by appendStringInfoText.
(4)Reduce execution of TEXTDUP.
The effect of the patch that I measured is as follows:
- The Data for test was created by 'pgbench -i'.
- Test SQL:
select replace(aid, '9', 'A') from accounts;
- Test results: Linux(CPU: Pentium III, Compiler option: -O2)
original: 1.515s
patched: 1.250s
Tom Lane [Mon, 4 Jul 2005 04:51:52 +0000 (04:51 +0000)]
Arrange for the postmaster (and standalone backends, initdb, etc) to
chdir into PGDATA and subsequently use relative paths instead of absolute
paths to access all files under PGDATA. This seems to give a small
performance improvement, and it should make the system more robust
against naive DBAs doing things like moving a database directory that
has a live postmaster in it. Per recent discussion.
> A quick look shows that when you use --with-libraries=/foo/bar the
> generated link line for libraries says
>
> -L/foo/bar -lpq
>
> and it should probably be the other way around (as it is for the
> executables).
>
> So I suspect we need some makefile tuning.
Bruce Momjian [Mon, 4 Jul 2005 04:06:43 +0000 (04:06 +0000)]
Update wording:
< Currently, to protect against partial disk page writes, we write the
> Currently, to protect against partial disk page writes, we write 877c877
< * Turn off after-change writes if fsync is disabled
> * Turn off full page writes if fsync is disabled
Tom Lane [Sun, 3 Jul 2005 21:14:18 +0000 (21:14 +0000)]
Don't try to constant-fold functions returning RECORD. We were never
able to do this before, but I had tried to make an exception for functions
with OUT parameters. Michael Fuhr found one problem with it already, and
I found another, which was it didn't work for strict functions with a
NULL input. While both of these could be worked around, the probability
that there are more gotchas seems high; I think prudence dictates just
reverting to the former behavior for now. Accordingly, remove the kluge
added to get_expr_result_type() for Michael's case.
Support cross compilation by compiling "zic" with a native compiler. This
relies on the output of zic being platform independent, but that is
currently the case.
Bruce Momjian [Sun, 3 Jul 2005 02:32:56 +0000 (02:32 +0000)]
This patch allows contrib/pgcrypto to build with OpenSSL 0.9.8
(currently in beta) when cryptolib = openssl. According to the
following checkin message from several years ago, OpenSSL application
developers should no longer rely on <openssl/evp.h> to include
everything they need:
http://cvs.openssl.org/chngview?cn=9888
This patch adds the necessary header files. It doesn't appear to
break anything when building against OpenSSL 0.9.7.
BTW, core appears to build and work fine with OpenSSL 0.9.8. I've
built 7.3 through HEAD against 0.9.8-beta6 without noticing any
problems.
Bruce Momjian [Sat, 2 Jul 2005 23:28:22 +0000 (23:28 +0000)]
> A quick look shows that when you use --with-libraries=/foo/bar the
> generated link line for libraries says
>
> -L/foo/bar -lpq
>
> and it should probably be the other way around (as it is for the
> executables).
>
> So I suspect we need some makefile tuning.
Tom Lane [Sat, 2 Jul 2005 23:00:42 +0000 (23:00 +0000)]
Teach planner about some cases where a restriction clause can be
propagated inside an outer join. In particular, given
LEFT JOIN ON (A = B) WHERE A = constant, we cannot conclude that
B = constant at the top level (B might be null instead), but we
can nonetheless put a restriction B = constant into the quals for
B's relation, since no inner-side rows not meeting that condition
can contribute to the final result. Similarly, given
FULL JOIN USING (J) WHERE J = constant, we can't directly conclude
that either input J variable = constant, but it's OK to push such
quals into each input rel. Per recent gripe from Kim Bisgaard.
Along the way, remove 'valid_everywhere' flag from RestrictInfo,
as on closer analysis it was not being used for anything, and was
defined backwards anyway.
Tom Lane [Fri, 1 Jul 2005 19:19:05 +0000 (19:19 +0000)]
Migrate rtree_gist functionality into the core system, and add some
basic regression tests for GiST to the standard regression tests.
I took the opportunity to add an rtree-equivalent gist opclass for
circles; the contrib version only covered boxes and polygons, but
indexing circles is very handy for distance searches.
Bruce Momjian [Fri, 1 Jul 2005 17:35:22 +0000 (17:35 +0000)]
Clarify:
< o Replace crude DELETE FROM method of pg_dumpall for cleaning of
< roles with separate DROP commands
> o Replace crude DELETE FROM method of pg_dumpall --clean for
> cleaning of roles with separate DROP commands
Bruce Momjian [Fri, 1 Jul 2005 17:32:21 +0000 (17:32 +0000)]
Update for roles:
< * Allow limits on per-db/user connections
> * Allow limits on per-db/role connections
< * Prevent default re-use of sysids for dropped users and roles
<
< Currently, if a user is removed while he still owns objects, a new
< user given might be given their user id and inherit the
< previous users objects.
< 450c444
< * Add COMMENT ON for all cluster global objects (users, roles, databases
> * Add COMMENT ON for all cluster global objects (roles, databases 609c603
< users and roles with separate DROP commands
> roles with separate DROP commands
Bruce Momjian [Fri, 1 Jul 2005 17:05:58 +0000 (17:05 +0000)]
Update for roles:
< * Prevent default re-use of sysids for dropped users and groups
> * Prevent default re-use of sysids for dropped users and roles 450c450
< * Add COMMENT ON for all cluster global objects (users, groups, databases
> * Add COMMENT ON for all cluster global objects (users, roles, databases 609c609
< users and groups with separate DROP commands
> users and roles with separate DROP commands
Fixes from Janko Richter <jankorichter@yahoo.de>
- Fix wrong index results on text, char, varchar for multibyte strings
- Fix some SIGFPE signals
- Add support for infinite timestamps
- Because of locale settings, btree_gist can not be a prefix index anymore (for text).
Each node holds now just the lower and upper boundary.
Neil Conway [Fri, 1 Jul 2005 05:13:58 +0000 (05:13 +0000)]
Adds some missing error handling to PGTYPESnumeric_div() in ecpg's
pgtypeslib: (1) we need to check the return value of sub_abs() (2) we
need to check the return value of 4 calls to digitbuf_alloc().
Per Coverity static analysis performed by EnterpriseDB.
Neil Conway [Fri, 1 Jul 2005 05:12:06 +0000 (05:12 +0000)]
Fix some minor infelicities in ecpg's pgtypeslib: (1) `pstr' must be
non-NULL in this function, so there is no need to check for it (2) we
should check the return value of pgtypes_strdup(). Patch from Eric
Astor at EnterpriseDB, with slight cleanup by myself, per a report
from the Coverity tool.
Teodor Sigaev [Thu, 30 Jun 2005 17:52:14 +0000 (17:52 +0000)]
Bug fixes for GiST crash recovery.
- add forgotten check of lsn for insert completion
- remove level of pages: hard to check in recovery
- some cleanups
Neil Conway [Thu, 30 Jun 2005 07:27:31 +0000 (07:27 +0000)]
Minor ecpg tweak: the return value of calloc() is guaranteed to be NULL
or zero-filled; therefore zero-filling it via memset() is pointless.
(I think setting `errno' is probably a waste of cycles as well, but I
haven't changed that.)
Neil Conway [Thu, 30 Jun 2005 07:08:59 +0000 (07:08 +0000)]
Warning cleanups for ecpg tests. Avoid doing pointer arithmetic on void *,
remove old-style function declarations, and mark a function "static".
There are some remaining warnings, but this fixes most of them, anyway.
Neil Conway [Thu, 30 Jun 2005 01:59:20 +0000 (01:59 +0000)]
Fix a theoretical memory leak in pg_password_sendauth(). If the first
malloc() succeeded but the second failed, the buffer allocated by the
first malloc() would be leaked. Fix this by allocating both buffers
via a single malloc(), as suggested by Tom.
Per Coverity static analysis performed by EnterpriseDB.
Tom Lane [Thu, 30 Jun 2005 00:00:52 +0000 (00:00 +0000)]
Improve the checkpoint signaling mechanism so that the bgwriter can tell
the difference between checkpoints forced due to WAL segment consumption
and checkpoints forced for other reasons (such as CREATE DATABASE). Avoid
generating 'checkpoints are occurring too frequently' messages when the
checkpoint wasn't caused by WAL segment consumption. Per gripe from
Chris K-L.
Tom Lane [Wed, 29 Jun 2005 22:51:57 +0000 (22:51 +0000)]
Clean up the rather historically encumbered interface to now() and
current time: provide a GetCurrentTimestamp() function that returns
current time in the form of a TimestampTz, instead of separate time_t
and microseconds fields. This is what all the callers really want
anyway, and it eliminates low-level dependencies on AbsoluteTime,
which is a deprecated datatype that will have to disappear eventually.
Tom Lane [Wed, 29 Jun 2005 20:34:15 +0000 (20:34 +0000)]
More cleanup on roles patch. Allow admin option to be inherited through
role memberships; make superuser/createrole distinction do something
useful; fix some locking and CommandCounterIncrement issues; prevent
creation of loops in the membership graph.
Tom Lane [Tue, 28 Jun 2005 22:16:45 +0000 (22:16 +0000)]
Fix up problems in write_auth_file and parsing of the auth file.
In particular, make hba.c cope with zero-length tokens, which it
never did properly before. Also, enforce rolcanlogin.
Tom Lane [Tue, 28 Jun 2005 19:51:26 +0000 (19:51 +0000)]
Bring syntax of role-related commands into SQL compliance. To avoid
syntactic conflicts, both privilege and role GRANT/REVOKE commands have
to use the same production for scanning the list of tokens that might
eventually turn out to be privileges or role names. So, change the
existing GRANT/REVOKE code to expect a list of strings not pre-reduced
AclMode values. Fix a couple other minor issues while at it, such as
InitializeAcl function name conflicting with a Windows system function.
Tom Lane [Tue, 28 Jun 2005 05:09:14 +0000 (05:09 +0000)]
Replace pg_shadow and pg_group by new role-capable catalogs pg_authid
and pg_auth_members. There are still many loose ends to finish in this
patch (no documentation, no regression tests, no pg_dump support for
instance). But I'm going to commit it now anyway so that Alvaro can
make some progress on shared dependencies. The catalog changes should
be pretty much done.
Teodor Sigaev [Mon, 27 Jun 2005 12:45:23 +0000 (12:45 +0000)]
Concurrency for GiST
- full concurrency for insert/update/select/vacuum:
- select and vacuum never locks more than one page simultaneously
- select (gettuple) hasn't any lock across it's calls
- insert never locks more than two page simultaneously:
- during search of leaf to insert it locks only one page
simultaneously
- while walk upward to the root it locked only parent (may be
non-direct parent) and child. One of them X-lock, another may
be S- or X-lock
- 'vacuum full' locks index
- improve gistgetmulti
- simplify XLOG records
Fix bug in index_beginscan_internal: LockRelation may clean
rd_aminfo structure, so move GET_REL_PROCEDURE after LockRelation
Tom Lane [Mon, 27 Jun 2005 02:17:47 +0000 (02:17 +0000)]
Modify pg_dump to assume that a check constraint is inherited if its
name matches the name of any parent-table constraint, without looking
at the constraint text. This is a not-very-bulletproof workaround for
the problem exhibited by Berend Tober last month. We really ought to
record constraint inheritance status in pg_constraint, but it's looking
like that may not get done for 8.1 --- and even if it does, we will
need this kluge for dumping from older servers.
Neil Conway [Mon, 27 Jun 2005 02:04:26 +0000 (02:04 +0000)]
Remove support for Kerberos V4. It seems no one is using this, it has
some security issues, and upstream has declared it "dead". Patch from
Magnus Hagander, minor editorialization from Neil Conway.