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PostgreSQL > pgsql-hackers > August 2012

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126 discussions - 1,180 posts

  • Hello, The attached patch is just a proof-of-concept of writable foreign table feature; thus, I don't expect it getting merged at the upcoming commit fest. The purpose of this patch is to find out ...
    Kohei KaiGaiKohei KaiGai
    Aug 23, 2012 at 5:10 am
    Dec 23, 2012 at 11:31 am
  • Hi, I found this in the TODO list: Add API for 64-bit large object access If this is a still valid TODO item and nobody is working on this, I would like to work in this. -- Tatsuo Ishii SRA OSS, ...
    Tatsuo IshiiTatsuo Ishii
    Aug 21, 2012 at 10:27 pm
    Oct 8, 2012 at 5:02 am
  • I find $SUBJECT fairly scary, because systable_beginscan_ordered() is dependent on having a working, non-corrupt index. If you are trying to run the backend with ignore_system_indexes so that you can ...
    Tom LaneTom Lane
    Aug 28, 2012 at 4:39 pm
    Dec 20, 2012 at 11:47 pm
  • Hackers, Is there any reason not to add $subject? Would it be difficult? Would save me having to write a DO statement every time I needed it (which in migration scripts is fairly often). Thanks, David
    David E. WheelerDavid E. Wheeler
    Aug 15, 2012 at 5:50 pm
    Oct 4, 2012 at 12:17 am
  • Problem statement: ----------------------------------- Reducing wal size for an update operation for performance improvement. Advantages: --------------------- 1. Observed increase in performance ...
    Amit kapilaAmit kapila
    Aug 3, 2012 at 11:49 am
    Aug 31, 2012 at 3:10 am
  • Hi, attached is a patch that improves performance when dropping multiple tables within a transaction. Instead of scanning the shared buffers for each table separately, the patch removes this and ...
    Tomas VondraTomas Vondra
    Aug 24, 2012 at 10:37 pm
    Jan 9, 2013 at 7:03 am
  • Hi, please find attached version 1 of the patch introducing "Array ELEMENT Foreign Keys" support. This new thread and related patch substitute any previous discussion about "Support for foreign keys ...
    Marco NenciariniMarco Nenciarini
    Aug 1, 2012 at 5:41 pm
    Nov 1, 2012 at 12:46 am
  • Hackers, attached patch is for collecting statistics and selectivity estimation for ranges. In order to make our estimations accurate for every distribution of ranges, we would collect ...
    Alexander KorotkovAlexander Korotkov
    Aug 4, 2012 at 9:31 am
    Jan 4, 2013 at 8:42 am
  • I've been experimenting with moving the Unix socket directory to /var/run/postgresql for the Fedora distribution (don't ask :-(). It's mostly working, but I found out yet another way that pg_upgrade ...
    Tom LaneTom Lane
    Aug 13, 2012 at 2:34 am
    Sep 4, 2012 at 2:23 am
  • ... or at least, that's what the schedule says. I don't think we can honestly produce a "release candidate" when there are still open issues listed as blockers at ...
    Tom LaneTom Lane
    Aug 21, 2012 at 2:47 pm
    Aug 26, 2012 at 8:31 pm
  • When a cascading standby launches a new walsender, it fetches the current recovery timeline: /* * Use the recovery target timeline ID during recovery */ if (am_cascading_walsender) ThisTimeLineID = ...
    Heikki LinnakangasHeikki Linnakangas
    Aug 31, 2012 at 8:03 am
    Sep 5, 2012 at 5:08 pm
  • A customer reported that when you set default_isolation_level='serializable' in postgresql.conf on Windows, and try to start up the database, it crashes immediately. And sure enough, it does, on ...
    Heikki LinnakangasHeikki Linnakangas
    Aug 12, 2012 at 10:04 am
    Aug 24, 2012 at 5:13 pm
  • Hello all, I am providing a patch to allow you to change the output of a boolean value in psql much like you can do with NULL. A client requested this feature and we thought it may appeal to someone ...
    Phil SorberPhil Sorber
    Aug 19, 2012 at 4:02 pm
    Aug 22, 2012 at 8:40 am
  • Hi, I am thinking about to implement "multi-master" option for pgbench. Supose we have multiple PostgreSQL running on host1 and host2. Something like "pgbench -c 10 -h host1,host2..." will create 5 ...
    Tatsuo IshiiTatsuo Ishii
    Aug 21, 2012 at 9:04 am
    Aug 30, 2012 at 11:08 am
  • I've been idly amusing myself by trying to hack up support for SQL-standard LATERAL subqueries. I've got something that turns over, more or less: regression=# select * from int4_tbl a, lateral ...
    Tom LaneTom Lane
    Aug 5, 2012 at 9:58 pm
    Sep 1, 2012 at 4:43 am
  • Hi all I'm seeing enough questions on pgsql-general and stack overflow to suggest that the docs for how sequences interact with transaction rollback. Take the most recent post on -general, where the ...
    Craig RingerCraig Ringer
    Aug 3, 2012 at 1:56 pm
    Aug 23, 2012 at 1:37 am
  • Greetings, When doing tab-completion under 9.1, pg_table_is_visible(oid) is slow and is ending up as the first thing tested against all the rows in pg_class. Increasing the cost of ...
    Stephen FrostStephen Frost
    Aug 17, 2012 at 2:37 am
    Aug 21, 2012 at 6:24 pm
  • Here is a patch for this feature, which should alleviate some of the woes caused by adding labels not being transactional (and thus not allowing for the catching of errors). (Also available on the ...
    Andrew DunstanAndrew Dunstan
    Aug 20, 2012 at 2:52 pm
    Sep 26, 2012 at 7:12 pm
  • A member of our technical team brought it to my attention that if you have a recalcitrant backend that doesn't die when you send it a SIGTERM, and you don't want to cause a crash-and-restart cycle by ...
    Robert HaasRobert Haas
    Aug 13, 2012 at 5:05 pm
    Aug 30, 2012 at 5:34 pm
  • So Andres Freund floated a proposal to create an xlogdump sort of tool, in core, and posted a patch. One advantage of having xlogdump in core is that we can have buildfarm test that part of the Xlog ...
    Alvaro HerreraAlvaro Herrera
    Aug 29, 2012 at 7:50 pm
    Nov 27, 2012 at 7:54 pm
  • Hello last year we are spoke about reusing pretty print view code for some queries. Here is patch: this patch is really short - it is nice. But - it works only with known database objects (probably ...
    Pavel StehulePavel Stehule
    Aug 7, 2012 at 2:15 pm
    Aug 8, 2012 at 3:10 am
  • Hi, When I used pg_trgm, I encountered the problem that the search result of SeqScan was the different from that of BitmapScan even if the search keyword was the same. Is this a bug? Here is the test ...
    Fujii MasaoFujii Masao
    Aug 7, 2012 at 6:38 pm
    Sep 6, 2012 at 9:24 pm
  • Hi, I noticed one more problem with NOT NULL constraints and foreign tables -- which is that they are allowed at all (see also ...
    Alvaro HerreraAlvaro Herrera
    Aug 17, 2012 at 6:58 pm
    Aug 25, 2012 at 1:49 am
  • I've been fooling around with this concept, and attach a draft patch that I'm not terribly satisfied with yet. It's not making the code any shorter, although it holds some promise of being able to do ...
    Tom LaneTom Lane
    Aug 9, 2012 at 3:56 pm
    Aug 15, 2012 at 3:48 am
  • Hello hackers, In order to test 9.2rc1, I had to build contrib (because Pyrseas uses some of those modules). The build instructions (http://www.postgresql.org/docs/9.2/static/install-procedure.html ) ...
    Joe AbbateJoe Abbate
    Aug 30, 2012 at 8:18 pm
    Sep 1, 2012 at 10:29 am
  • I found that code of gistchoose doesn't follow it's logic. Idea of gistchoose is that first column penalty is more important than penalty of second column. If we meet same penalty values of first ...
    Alexander KorotkovAlexander Korotkov
    Aug 20, 2012 at 4:57 pm
    Aug 30, 2012 at 9:40 pm
  • Hi, this patch adds support for aggregation of info written into the log. Instead of info about each transaction, a summary for time intervals (with custom length) is written into the log. All you ...
    Tomas VondraTomas Vondra
    Aug 24, 2012 at 9:25 pm
    Oct 18, 2012 at 4:03 pm
  • Hi, attached is a patch that adds support for random sampling in pgbench, when it's executed with "-l" flag. You can do for example this: $ pgbench -l -T 120 -R 1 db and then only 1% of transactions ...
    Tomas VondraTomas Vondra
    Aug 24, 2012 at 9:16 pm
    Oct 3, 2012 at 12:49 pm
  • The following is a comment at fileGetForeignPaths() in contrib/file_fdw.c: /* * If data file was sorted, and we knew it somehow, we could insert * appropriate pathkeys into the ForeignPath node to ...
    Etsuro FujitaEtsuro Fujita
    Aug 2, 2012 at 10:56 am
    Aug 7, 2012 at 12:43 pm
  • [Forwarding to the -hackers list. Please respond there.] Craig Ringer wrote: I see that we currently have five links to wiki.postgresql.org in release notes and four more in the rest of the docs. Are ...
    Kevin GrittnerKevin Grittner
    Aug 9, 2012 at 2:22 pm
    Sep 5, 2012 at 3:07 am
  • After upgrading from 8.4 to 9.1, one of my plperl functions stopped working properly. For some reason, when matching a string using a regex, the $1 variable cannot be returned directly using ...
    Joel JacobsonJoel Jacobson
    Aug 19, 2012 at 8:26 pm
    Aug 23, 2012 at 3:35 am
  • $ pg_dump -v postgres -Fc -t t /dev/null ... pg_dump: dumping contents of table t ... but in plaintext: $ pg_dump -v postgres -Fp -t t /dev/null pg_dump: creating TABLE t pg_dump: restoring data for ...
    Magnus HaganderMagnus Hagander
    Aug 28, 2012 at 12:08 pm
    Sep 4, 2012 at 1:52 pm
  • Hi, I've been bitten twice by exec_prog()s API, so here's a patch to try to make it a bit harder to misuse. There are two main changes here; one is to put the logfile option as the first argument ...
    Alvaro HerreraAlvaro Herrera
    Aug 23, 2012 at 8:07 pm
    Aug 27, 2012 at 6:32 pm
  • I just had HEAD fail to recover after a backend core dump, because the startup process dumped core itself during replay: LOG: all server processes terminated; reinitializing LOG: database system was ...
    Tom LaneTom Lane
    Aug 18, 2012 at 1:47 am
    Aug 20, 2012 at 4:15 pm
  • Hello PG hackers. Yesterday I began diagnosing a peculiar bug in some production code that has been happily running for months. I finally got to the bottom of it despite the rather misleading error ...
    Jim VannsJim Vanns
    Aug 8, 2012 at 9:02 am
    Aug 13, 2012 at 1:45 pm
  • Craig RingerCraig Ringer
    Aug 13, 2012 at 3:21 am
    Aug 13, 2012 at 6:16 am
  • Hi, hackers I made the final version tablesample patch. It is implementing SYSTEM and BERNOULLI sample method, which is basically "feature-complete". The regression test is also included in this ...
    Qi HuangQi Huang
    Aug 21, 2012 at 1:52 am
    Dec 10, 2012 at 4:13 am
  • Hello patch that implements "shared" client/server session variables Regards Pavel Stehule
    Pavel StehulePavel Stehule
    Aug 14, 2012 at 7:46 am
    Sep 27, 2012 at 6:50 pm
  • Looking at the docs (section 25.2.6 paragraph 6) leads one to believe that downstream standbys can continue to receive and process wal merely by reconnecting after the cascading standby is promoted - ...
    Mark KirkwoodMark Kirkwood
    Aug 14, 2012 at 12:20 am
    Sep 19, 2012 at 4:10 am
  • Folks, There are situations where a "default deny" policy is the best fit. To that end, I have a modest proposal: REVOKE PUBLIC FROM role; Thenceforth, the role in question would only have access to ...
    David FetterDavid Fetter
    Aug 28, 2012 at 5:26 pm
    Aug 29, 2012 at 3:18 am
  • Hi all, On my Mac 10.6.8 using ActiveState Python 3.2.2, I am getting a crash when I try to execute "CREATE EXTENSION plpython3u" This is the backtrace: Program received signal SIGABRT, Aborted ...
    Sachin SrivastavaSachin Srivastava
    Aug 21, 2012 at 1:34 pm
    Aug 22, 2012 at 2:26 pm
  • I found a tool that Google authored that attempts to solve the same problems as pgrminclude does in our codebase. It's called "include what you use", and is based on Clang. The project is hosted ...
    Peter GeogheganPeter Geoghegan
    Aug 16, 2012 at 3:48 pm
    Aug 20, 2012 at 7:22 pm
  • Hi, hackers I was exporting my project to a patch file. As the patch review requires, the patch needs to be in context diff format (http://wiki.postgresql.org/wiki/Reviewing_a_Patch). But the git ...
    Qi HuangQi Huang
    Aug 3, 2012 at 6:56 am
    Aug 9, 2012 at 2:45 am
  • Hi all I'm seeing lots of confusion from people about why: REVOKE CONNECT ON DATABASE foo FROM someuser; doesn't stop them connecting. Users seem to struggle to understand that: - There's a default ...
    Craig RingerCraig Ringer
    Aug 21, 2012 at 6:31 am
    Oct 4, 2012 at 2:33 pm
  • Well, the reason why it's like that at all is the thought that values of less than 1 millisecond might be useful. Are we prepared to suppose that that is not and never will be true? regards, tom lane
    Tom LaneTom Lane
    Aug 15, 2012 at 4:15 am
    Sep 6, 2012 at 3:43 am
  • Hello hackers, I've been testing Pyrseas against 9.2rc1. A test that does a CREATE OPERATOR is giving a small difference. Specifically, the test issues the statement: CREATE OPERATOR + (PROCEDURE = ...
    Joe AbbateJoe Abbate
    Aug 30, 2012 at 3:16 pm
    Aug 30, 2012 at 6:56 pm
  • Hello, when running VACUUM ANALYZE on my database built on win32-x86 from yesterday's git checkout I always get this at some point during VACUUM ANALYZE: LOG: server process (PID 5880) was terminated ...
    MatthiasMatthias
    Aug 30, 2012 at 5:56 am
    Aug 30, 2012 at 5:34 pm
  • I did some performance testing of building an SP-GiST index, with the new range type SP-GiST opclass. There's some low-hanging fruit there, I was able to reduce the index build time on a simple test ...
    Heikki LinnakangasHeikki Linnakangas
    Aug 28, 2012 at 11:26 am
    Aug 29, 2012 at 8:28 am
  • The script analyze_new_cluster.sh output by pg_upgrade contains several "sleep" calls (see contrib/pg_upgrade/check.c). What is the point of this? If the purpose of this script is to get the database ...
    Peter EisentrautPeter Eisentraut
    Aug 23, 2012 at 6:17 am
    Aug 27, 2012 at 3:23 am
  • The MacPorts Project (http://www.macports.org/) supports building universal binaries (32/64bit binaries in one file) for most projects. For PostgreSQL, they apply two patches after the configure ...
    Doug ColemanDoug Coleman
    Aug 10, 2012 at 10:22 pm
    Aug 14, 2012 at 9:55 pm
Aug 2012
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113 users for August 2012

Tom Lane: 195 posts Bruce Momjian: 160 posts Robert Haas: 133 posts Amit Kapila: 43 posts Alvaro Herrera: 41 posts Andrew Dunstan: 32 posts Heikki Linnakangas: 32 posts Kevin Grittner: 30 posts Peter Eisentraut: 29 posts Craig Ringer: 27 posts Tatsuo Ishii: 25 posts Pavel Stehule: 24 posts Magnus Hagander: 22 posts Andres Freund: 21 posts Alexander Korotkov: 15 posts Jeff Davis: 15 posts Simon Riggs: 15 posts Fujii Masao: 14 posts Josh Berkus: 14 posts David Fetter: 13 posts
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