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* Tighten integrity checks on ALTER TABLE ... ALTER COLUMN ... RENAME.Robert Haas2010-02-01
| | | | | | | | | | | | | | | When a column is renamed, we recursively rename the same column in all descendent tables. But if one of those tables also inherits that column from a table outside the inheritance hierarchy rooted at the named table, we must throw an error. The previous coding correctly prohibited the rename when the parent had inherited the column from elsewhere, but overlooked the case where the parent was OK but a child table also inherited the same column from a second, unrelated parent. For now, not backpatched due to lack of complaints from the field. KaiGai Kohei, with further changes by me. Reviewed by Bernd Helme and Tom Lane.
* Augment EXPLAIN output with more details on Hash nodes.Robert Haas2010-02-01
| | | | | | We show the number of buckets, the number of batches (and also the original number if it has changed), and the peak space used by the hash table. Minor executor changes to track peak space used.
* Revoke augmentation of WAL records for btree delete, per discussion.Simon Riggs2010-02-01
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* Add string_agg aggregate functions. The one argument version concatenatesItagaki Takahiro2010-02-01
| | | | | | | the input values into a string. The two argument version also does the same thing, but inserts delimiters between elements. Original patch by Pavel Stehule, reviewed by David E. Wheeler and me.
* Change regexp engine's ccondissect/crevdissect routines to perform DFATom Lane2010-02-01
| | | | | | | | | | | | | | | | | matching before recursing instead of after. The DFA match eliminates unworkable midpoint choices a lot faster than the recursive check, in most cases, so doing it first can speed things up; particularly in pathological cases such as recently exhibited by Michael Glaesemann. In addition, apply some cosmetic changes that were applied upstream (in the Tcl project) at the same time, in order to sync with upstream version 1.15 of regexec.c. Upstream apparently intends to backpatch this, so I will too. The pathological behavior could be unpleasant if encountered in the field, which seems to justify any risk of introducing new bugs. Tom Lane, reviewed by Donal K. Fellows of Tcl project
* Detect early deadlock in Hot Standby when Startup is already waiting. FirstSimon Riggs2010-01-31
| | | | | | stage of required deadlock detection to allow re-enabling max_standby_delay setting of -1, which is now essential in the absence of improved relation- specific conflict resoluton. Requested by Greg Stark et al.
* Fix memory leak created by deferrable-index-constraints patches.Tom Lane2010-01-31
| | | | | | | | | We need to free the OID list returned by ExecInsertIndexTuples to avoid a query-lifespan memory leak. When many rows require rechecking, this can be a significant leak --- it's even more than the space used for the queued trigger events. Dean Rasheed
* Make checks for invalid pgStatSock use PGINVALID_SOCKETMagnus Hagander2010-01-31
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* Parenthesize this macro, just in case.Tom Lane2010-01-31
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* Get rid of unportable use of socklen_t --- we have a configure testTom Lane2010-01-31
| | | | for that, so use it.
* Remove now unnecessary loop around CallNamedPipe().Magnus Hagander2010-01-31
| | | | Radu Ilie
* Fix race condition in win32 signal handling.Magnus Hagander2010-01-31
| | | | | | | | | | | | There was a race condition where the receiving pipe could be closed by the child thread if the main thread was pre-empted before it got a chance to create a new one, and the dispatch thread ran to completion during that time. One symptom of this is that rows in pg_listener could be dropped under heavy load. Analysis and original patch by Radu Ilie, with some small modifications by Magnus Hagander.
* Avoid performing encoding conversion on command tag strings during EndCommand.Tom Lane2010-01-30
| | | | | | | | | | | | | Since all current and foreseeable future command tags will be pure ASCII, there is no need to do conversion on them. This saves a few cycles and also avoids polluting otherwise-pristine subtransaction memory contexts, which is the cause of the backend memory leak exhibited in bug #5302. (Someday we'll probably want to have a better method of determining whether subtransaction contexts need to be kept around, but today is not that day.) Backpatch to 8.0. The cycle-shaving aspect of this would work in 7.4 too, but without subtransactions the memory-leak aspect doesn't apply, so it doesn't seem worth touching 7.4.
* Fix memory leakage introduced into print_aligned_text by 8.4 changesTom Lane2010-01-30
| | | | | | | (failure to free col_lineptrs[] array elements) and exacerbated in the current devel cycle (failure to free "wrap"). This resulted in moderate bloat of psql over long script runs. Noted while testing bug #5302, although what the reporter was complaining of was backend-side leakage.
* Fix some comments that got mangled by pgindent.Tom Lane2010-01-30
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* Add plperl.on_perl_init setting to provide for initializing the perl library ↵Andrew Dunstan2010-01-30
| | | | | | | | on load. Also, handle END blocks in plperl. Database access is disallowed during both these operations, although it might be allowed in END blocks in future. Patch from Tim Bunce.
* Adjust GetLockConflicts() so that it uses TopMemoryContext whenSimon Riggs2010-01-29
| | | | | executed InHotStandby. Cleaner solution than using malloc or palloc depending upon situation, as proposed by Tom.
* Augment WAL records for btree delete with GetOldestXmin() to reduceSimon Riggs2010-01-29
| | | | | | | | false positives during Hot Standby conflict processing. Simple patch to enhance conflict processing, following previous discussions. Controlled by parameter minimize_standby_conflicts = on | off, with default off allows measurement of performance impact to see whether it should be set on all the time.
* Allow psql variables to be interpolated with literal or identifier escaping.Robert Haas2010-01-29
| | | | Loosely based on a patch by Pavel Stehule.
* Filter recovery conflicts based upon dboid from relfilenode of WALSimon Riggs2010-01-29
| | | | | | | | records for heap and btree. Minor change, mostly API changes to pass through the required values. This is a simple change though also provides the refactoring required for further enhancements to conflict processing using the relOid. Changes only have effect during Hot Standby.
* Changed ECPG outofscope handling to always print out statements in the same ↵Michael Meskes2010-01-29
| | | | | | | | order so regression testing is possible, by Zoltan Boszormenyi
* Fixed a few typos in ecpg. Two were in comments, the third made a log output ↵Michael Meskes2010-01-29
| | | | reverse yes and no.
* Fix command tag for ALTER LARGE OBJECT.Itagaki Takahiro2010-01-29
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* Type table featurePeter Eisentraut2010-01-28
| | | | This adds the CREATE TABLE name OF type command, per SQL standard.
* Fix bug found by warning from recent gcc. patch from Tim Bunce.Andrew Dunstan2010-01-28
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* Fix crashing bug at the end of recovery in Streaming Replication, whenHeikki Linnakangas2010-01-28
| | | | restore_command is not given. Fujii Masao.
* Add functions to reset the statistics counter for a single table/index orMagnus Hagander2010-01-28
| | | | a single function.
* Define INADDR_NONE on Solaris when it's missing. Per a couple of buildfarmMagnus Hagander2010-01-28
| | | | members complaining.
* Use malloc() in GetLockConflicts() when called InHotStandby to avoid repeatedSimon Riggs2010-01-28
| | | | palloc calls. Current code assumed this was already true, so this is a bug fix.
* Change a few remaining calls of XLogArchivingActive() to useHeikki Linnakangas2010-01-28
| | | | | | | XLogIsNeeded() instead, to determine if an otherwise non-logged operation needs to be logged in WAL for standby servers. Fujii Masao
* Introduce two new libpq connection functions, PQconnectdbParams andJoe Conway2010-01-28
| | | | | | | | | | | | | | | | | PQconnectStartParams. These are analogous to PQconnectdb and PQconnectStart respectively. They differ from the legacy functions in that they accept two NULL-terminated arrays, keywords and values, rather than conninfo strings. This avoids the need to build the conninfo string in cases where it might be inconvenient to do so. Includes documentation. Also modify psql to utilize PQconnectdbParams rather than PQsetdbLogin. This allows the new config parameter application_name to be set, which in turn is displayed in the pg_stat_activity view and included in CSV log entries. This will also ensure both new functions get regularly exercised. Patch by Guillaume Lelarge with review and minor adjustments by Joe Conway.
* Fix bug in wasender's xlogid boundary handling, reported by Erik Rijkers.Heikki Linnakangas2010-01-27
| | | | | | | | LogwrtRqst.Write can be set to non-existent FF log segment, we mustn't try to send that in XLogSend(). Also fix similar bug in ReadRecord(), which I just introduced in the ReadRecord() refactoring patch.
* Make standby server continuously retry restoring the next WAL segment withHeikki Linnakangas2010-01-27
| | | | | | | | | | | | | | | | | | | | | | | | restore_command, if the connection to the primary server is lost. This ensures that the standby can recover automatically, if the connection is lost for a long time and standby falls behind so much that the required WAL segments have been archived and deleted in the master. This also makes standby_mode useful without streaming replication; the server will keep retrying restore_command every few seconds until the trigger file is found. That's the same basic functionality pg_standby offers, but without the bells and whistles. To implement that, refactor the ReadRecord/FetchRecord functions. The FetchRecord() function introduced in the original streaming replication patch is removed, and all the retry logic is now in a new function called XLogReadPage(). XLogReadPage() is now responsible for executing restore_command, launching walreceiver, and waiting for new WAL to arrive from primary, as required. This also changes the life cycle of walreceiver. When launched, it now only tries to connect to the master once, and exits if the connection fails, or is lost during streaming for any reason. The startup process detects the death, and re-launches walreceiver if necessary.
* Add support for RADIUS authentication.Magnus Hagander2010-01-27
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* Various small improvements and cleanups for PL/Perl.Andrew Dunstan2010-01-26
| | | | | | | | | | | | | | | | | | | | | | | | | | - Allow (ineffective) use of 'require' in plperl If the required module is not already loaded then it dies. So "use strict;" now works in plperl. - Pre-load the feature module if perl >= 5.10. So "use feature :5.10;" now works in plperl. - Stored procedure subs are now given names. The names are not visible in ordinary use, but they make tools like Devel::NYTProf and Devel::Cover much more useful. - Simplified and generalized the subroutine creation code. Now one code path for generating sub source code, not four. Can generate multiple 'use' statements with specific imports (which handles plperl.use_strict currently and can easily be extended to handle a plperl.use_feature=':5.12' in future). - Disallows use of Safe version 2.20 which is broken for PL/Perl. http://rt.perl.org/rt3/Ticket/Display.html?id=72068 - Assorted minor optimizations by pre-growing data structures. Patch from Tim Bunce, reviewed by Alex Hunsaker.
* Remove the default_do_language parameter, instead making DO use a hardwiredTom Lane2010-01-26
| | | | | | | | default of "plpgsql". This is more reasonable than it was when the DO patch was written, because we have since decided that plpgsql should be installed by default. Per discussion, having a parameter for this doesn't seem useful enough to justify the risk of application breakage if the value is changed unexpectedly.
* Un-break initdb logic for commenting out IPv6 pg_hba.conf line.Tom Lane2010-01-26
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* Added test case that was part of Zoltan's patch but apparently wasn't part ↵Michael Meskes2010-01-26
| | | | of my commit.
* Applied patch by Boszormenyi Zoltan <zb@cybertec.at> to add out-of-scope ↵Michael Meskes2010-01-26
| | | | cursor support to native mode.
* Reformat the comments in pg_hba.conf and pg_ident.confPeter Eisentraut2010-01-26
| | | | | | | These files have apparently been edited over the years by a dozen people with as many different editor settings, which made the alignment of the paragraphs quite inconsistent and ugly. I made a pass of M-q with Emacs to straighten it out.
* Make the default pg_hba.conf and pg_ident.conf align at 8-character boundariesPeter Eisentraut2010-01-26
| | | | to make it easier to use with tabs.
* Fix longstanding gripe that we check for 0000000001.history at start ofSimon Riggs2010-01-26
| | | | archive recovery, even when we know it is never present.
* Add get_bit/set_bit functions for bit strings, paralleling those for bytea,Tom Lane2010-01-25
| | | | | | | | | and implement OVERLAY() for bit strings and bytea. In passing also convert text OVERLAY() to a true built-in, instead of relying on a SQL function. Leonardo F, reviewed by Kevin Grittner
* Add note that PREPARE TRANSACTION is for transaction managers, notHeikki Linnakangas2010-01-25
| | | | | regular applications. Also add a comment pointing out that tab-complition for PREPARE TRANSACTION is missing on purpose.
* Apply Tcl_Init() to the "hold" interpreter created by pltcl.Tom Lane2010-01-25
| | | | | | | | | | | | | | | | | | | | | | | You might think this is unnecessary since that interpreter is never used to run code --- but it turns out that's wrong. As of Tcl 8.5, the "clock" command (alone among builtin Tcl commands) is partially implemented by loaded-on-demand Tcl code, which means that it fails if there's not unknown-command support, and also that it's impossible to run it directly in a safe interpreter. The way they get around the latter is that Tcl_CreateSlave() automatically sets up an alias command that forwards any execution of "clock" in a safe slave interpreter to its parent interpreter. Thus, when attempting to execute "clock" in trusted pltcl, the command actually executes in the "hold" interpreter, where it will fail if unknown-command support hasn't been introduced by sourcing the standard init.tcl script, which is done by Tcl_Init(). (This is a pretty dubious design decision on the Tcl boys' part, if you ask me ... but they didn't.) Back-patch all the way. It's not clear that anyone would try to use ancient versions of pltcl with a recent Tcl, but it's not clear they wouldn't, either. Also add a regression test using "clock", in branches that have regression test support for pltcl. Per recent trouble report from Kyle Bateman.
* Fix assorted core dumps and Assert failures that could occur duringTom Lane2010-01-24
| | | | | | | | | | | | | | AbortTransaction or AbortSubTransaction, when trying to clean up after an error that prevented (sub)transaction start from completing: * access to TopTransactionResourceOwner that might not exist * assert failure in AtEOXact_GUC, if AtStart_GUC not called yet * assert failure or core dump in AfterTriggerEndSubXact, if AfterTriggerBeginSubXact not called yet Per testing by injecting elog(ERROR) at successive steps in StartTransaction and StartSubTransaction. It's not clear whether all of these cases could really occur in the field, but at least one of them is easily exposed by simple stress testing, as per my accidental discovery yesterday.
* Insert CHECK_FOR_INTERRUPTS calls into loops in dbsize.c, to ensure thatTom Lane2010-01-23
| | | | | | the various disk-size-reporting functions will respond to query cancel reasonably promptly even in very large databases. Per report from Kevin Grittner.
* Add explanatory detail to Hot Standby cancelation error messagesSimon Riggs2010-01-23
| | | | with errdetail(). Add errhint() to suggest retry in certain cases.
* In HS, Startup process sets SIGALRM when waiting for buffer pin. IfSimon Riggs2010-01-23
| | | | | | | woken by alarm we send SIGUSR1 to all backends requesting that they check to see if they are blocking Startup process. If so, they throw ERROR/FATAL as for other conflict resolutions. Deadlock stop gap removed. max_standby_delay = -1 option removed to prevent deadlock.
* Fix several oversights in previous commit - attribute options patch.Robert Haas2010-01-22
| | | | I failed to 'cvs add' the new files and also neglected to bump catversion.
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