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* Back out patch, unintended.Bruce Momjian2006-04-24
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* Done:Bruce Momjian2006-04-24
| | | | | o -Add support for day-time syntax, INTERVAL '1 2:03:04' DAY TO SECOND
* Improve our private implementation of cbrt() to give results of theTom Lane2006-04-24
| | | | | accuracy expected by the regression tests. Per suggestion from Martijn van Oosterhout.
* Remove compiler warning by casting SNPRINTF() call to void.Bruce Momjian2006-04-24
| | | | Report from Gevik Babakhani.
* Don't add a shared dependency on the owner of a composite type in pg_class.Alvaro Herrera2006-04-24
| | | | | We track the owner in pg_type instead, as that is the place where the owner is changed on ALTER TYPE ... OWNER TO.
* Simplify ParamListInfo data structure to support only numbered parameters,Tom Lane2006-04-22
| | | | | | | not named ones, and replace linear searches of the list with array indexing. The named-parameter support has been dead code for many years anyway, and recent profiling suggests that the searching was costing a noticeable amount of performance for complex queries.
* Add some optional code (conditionally compiled under #ifdef LWLOCK_STATS)Tom Lane2006-04-21
| | | | | | to track the number of LWLock acquisitions and the number of times we block waiting for an LWLock, on a per-process basis. After having needed this twice in the past few months, seems like it should go into CVS.
* Eliminate some no-longer-needed workarounds for palloc's old behaviorTom Lane2006-04-20
| | | | | | | | of rejecting palloc(0). Also, tweak like_selectivity() to avoid assuming the presented pattern is nonempty; although that assumption is valid, it doesn't really help much, and the new coding is more correct anyway since it properly handles redundant wildcards. In combination these changes should eliminate a Coverity warning noted by Martijn.
* Add "retry another address" log message on statistics collector socketBruce Momjian2006-04-20
| | | | failure, to reduce confusion in the log file.
* Ensure that we validate the page header of the first page of a WAL fileTom Lane2006-04-20
| | | | | | | | | whenever we start to read within that file. The first page carries extra identification information that really ought to be checked, but as the code stood, this was only checked when we switched sequentially into a new WAL file, or if by chance the starting checkpoint record was within the first page. This patch ensures that we will detect bogus 'long header' information before we start replaying the WAL sequence.
* Fix problem that sscanf(buf, "%d", &val) eats leading white space, butBruce Momjian2006-04-19
| | | | our to_* functions were not handling that.
* C code whitespace inprovement for formatting.c.Bruce Momjian2006-04-19
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* Document that errors are not output by log_statement (was they were inBruce Momjian2006-04-18
| | | | | | | | | 8.0), and add as suggestion to use log_min_error_statement for this purpose. I also fixed the code so the first EXECUTE has it's prepare, rather than the last which is what was in the current code. Also remove "protocol" prefix for SQL EXECUTE output because it is not accurate. Backpatch to 8.1.X.
* Fix the torn-page hazard for PITR base backups by forcing full page writesTom Lane2006-04-17
| | | | | | | | | to occur between pg_start_backup() and pg_stop_backup(), even if the GUC setting full_page_writes is OFF. Per discussion, doing this in combination with the already-existing checkpoint during pg_start_backup() should ensure safety against partial page updates being included in the backup. We do not have to force full page writes to occur during normal PITR operation, as I had first feared.
* Support the syntaxTom Lane2006-04-15
| | | | | | | | | | | | | | CREATE AGGREGATE aggname (input_type) (parameter_list) along with the old syntax where the input type was named in the parameter list. This fits more naturally with the way that the aggregate is identified in DROP AGGREGATE and other utility commands; furthermore it has a natural extension to handle multiple-input aggregates, where the basetype-parameter method would get ugly. In fact, this commit fixes the grammar and all the utility commands to support multiple-input aggregates; but DefineAggregate rejects it because the executor isn't fixed yet. I didn't do anything about treating agg(*) as a zero-input aggregate instead of artificially making it a one-input aggregate, but that should be considered in combination with supporting multi-input aggregates.
* Make the world safe for full_page_writes. Allow XLOG records that try toTom Lane2006-04-14
| | | | | | | | | update no-longer-existing pages to fall through as no-ops, but make a note of each page number referenced by such records. If we don't see a later XLOG entry dropping the table or truncating away the page, complain at the end of XLOG replay. Since this fixes the known failure mode for full_page_writes = off, revert my previous band-aid patch that disabled that GUC variable.
* Repair a low-probability race condition identified by Qingqing Zhou.Tom Lane2006-04-14
| | | | | | | | | | | | If a process abandons a wait in LockBufferForCleanup (in practice, only happens if someone cancels a VACUUM) just before someone else sends it a signal indicating the buffer is available, it was possible for the wakeup to remain in the process' semaphore, causing misbehavior next time the process waited for an lmgr lock. Rather than try to prevent the race condition directly, it seems best to make the lock manager robust against leftover wakeups, by having it repeat waiting on the semaphore if the lock has not actually been granted or denied yet.
* Fix similar_escape() so that SIMILAR TO works properly for patterns involvingTom Lane2006-04-13
| | | | | | | | | | | | | | alternatives ("|" symbol). The original coding allowed the added ^ and $ constraints to be absorbed into the first and last alternatives, producing a pattern that would match more than it should. Per report from Eric Noriega. I also changed the pattern to add an ARE director ("***:"), ensuring that SIMILAR TO patterns do not change behavior if regex_flavor is changed. This is necessary to make the non-capturing parentheses work, and seems like a good idea on general principles. Back-patched as far as 7.4. 7.3 also has the bug, but a fix seems impractical because that version's regex engine doesn't have non-capturing parens.
* Fix an ancient oversight in btree xlog replay. When trying to determine if anTom Lane2006-04-13
| | | | | | | | | | | | | | | | | upper-level insertion completes a previously-seen split, we cannot simply grab the downlink block number out of the buffer, because the buffer could contain a later state of the page --- or perhaps the page doesn't even exist at all any more, due to relation truncation. These possibilities have been masked up to now because the use of full_page_writes effectively ensured that no xlog replay routine ever actually saw a page state newer than its own change. Since we're deprecating full_page_writes in 8.1.*, there's no need to fix this in existing release branches, but we need a fix in HEAD if we want to have any hope of re-allowing full_page_writes. Accordingly, adjust the contents of btree WAL records so that we can always get the downlink block number from the WAL record rather than having to depend on buffer contents. Per report from Kevin Grittner and Peter Brant. Improve a few comments in related code while at it.
* Suppress unused-variable warning on platforms without HAVE_SYSLOG.Tom Lane2006-04-10
| | | | Magnus
* Suppress a couple of minor compiler warnings, per Magnus.Tom Lane2006-04-09
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* Revert my best_inner_indexscan patch of yesterday, which turns out to haveTom Lane2006-04-09
| | | | | | | had a bad side-effect: it stopped finding plans that involved BitmapAnd combinations of indexscans using both join and non-join conditions. Instead, make choose_bitmap_and more aggressive about detecting redundancies between BitmapOr subplans.
* Fix best_inner_indexscan to actually enforce that an "inner indexscan" useTom Lane2006-04-08
| | | | | | | at least one join condition as an indexqual. Before bitmap indexscans, this oversight didn't really cost much except for redundantly considering the same join paths twice; but as of 8.1 it could result in silly bitmap scans that would do the same BitmapOr twice and then BitmapAnd these together :-(
* Fix EXPLAIN so that it can drill down through multiple levels of subplanTom Lane2006-04-08
| | | | | | | | | when trying to locate the referent of a RECORD variable. This fixes the 'record type has not been registered' failure reported by Stefan Kaltenbrunner about a month ago. A side effect of the way I chose to fix it is that most variable references in join conditions will now be properly labeled with the variable's source table name, instead of the not-too-helpful 'outer' or 'inner' we used to use.
* Fix make_restrictinfo_from_bitmapqual() to preserve AND/OR flatness of itsTom Lane2006-04-07
| | | | | | | | | output, ie, no OR immediately below an OR. Otherwise we get Asserts or wrong answers for cases such as select * from tenk1 a, tenk1 b where (a.ten = b.ten and (a.unique1 = 100 or a.unique1 = 101)) or (a.hundred = b.hundred and a.unique1 = 42); Per report from Rafael Martinez Guerrero.
* Remove the pgstats logic for delaying destruction of stats table entries.Tom Lane2006-04-06
| | | | | | Per recent discussion, this seems to be making the stats less accurate rather than more so, particularly on Windows where PID values may be reused very quickly. Patch by Peter Brant.
* Fix a bunch of problems with domains by making them use special input functionsTom Lane2006-04-05
| | | | | | | | | | | that apply the necessary domain constraint checks immediately. This fixes cases where domain constraints went unchecked for statement parameters, PL function local variables and results, etc. We can also eliminate existing special cases for domains in places that had gotten it right, eg COPY. Also, allow domains over domains (base of a domain is another domain type). This almost worked before, but was disallowed because the original patch hadn't gotten it quite right.
* Add a field to the first page of each WAL file to indicate theTom Lane2006-04-05
| | | | | | XLOG_BLCKSZ. This ought to help in preventing configuration mismatch problems if anyone tries to ship PITR files between servers compiled with different XLOG_BLCKSZ settings. Simon Riggs
* Don't use BLCKSZ for the physical length of the pg_control file, butTom Lane2006-04-04
| | | | | | instead a dedicated symbol. This probably makes no functional difference for likely values of BLCKSZ, but it makes the intent clearer. Simon Riggs, minor editorialization by Tom Lane.
* Modify all callers of datatype input and receive functions so that if theseTom Lane2006-04-04
| | | | | | | | | | | | | | | functions are not strict, they will be called (passing a NULL first parameter) during any attempt to input a NULL value of their datatype. Currently, all our input functions are strict and so this commit does not change any behavior. However, this will make it possible to build domain input functions that centralize checking of domain constraints, thereby closing numerous holes in our domain support, as per previous discussion. While at it, I took the opportunity to introduce convenience functions InputFunctionCall, OutputFunctionCall, etc to use in code that calls I/O functions. This eliminates a lot of grotty-looking casts, but the main motivation is to make it easier to grep for these places if we ever need to touch them again.
* Define a separately configurable XLOG_BLCKSZ symbol for the page sizeTom Lane2006-04-03
| | | | | | | | | | | used within WAL files. Historically this was the same as the data file BLCKSZ, but there's no necessary connection, and it's possible that performance gains might ensue from reducing XLOG_BLCKSZ. In any case distinguishing two symbols should improve code clarity. This commit does not actually change the page size, only provide the infrastructure to make it possible to do so. initdb forced because of addition of a field to pg_control. Mark Wong, with some help from Simon Riggs and Tom Lane.
* Fix thinko in gistRedoPageUpdateRecord: if XLR_BKP_BLOCK_1 is set, weTom Lane2006-04-03
| | | | | don't have anything to do to the page, but we still have to adjust the incomplete_inserts list that we're maintaining in memory.
* Eliminate ajust scan code. Since concurrent GiST it doesn'tTeodor Sigaev2006-04-03
| | | | do real work. That was missed during concurrence development.
* Update information schema for SQL:2003 and new PostgreSQL features.Peter Eisentraut2006-04-02
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* Remove the 'slow' path for btree index build, which built the btreeTom Lane2006-04-01
| | | | | | | | | | | incrementally by successive inserts rather than by sorting the data. We were only using the slow path during bootstrap, apparently because when first written it failed during bootstrap --- but it works fine now AFAICT. Removing it saves a hundred or so lines of code and produces noticeably (~10%) smaller initial states of the system catalog indexes. While that won't make much difference for heavily-modified catalogs, for the more static ones there may be a useful long-term performance improvement.
* Clean up WAL/buffer interactions as per my recent proposal. Get rid of theTom Lane2006-03-31
| | | | | | | | | | | | | | | | misleadingly-named WriteBuffer routine, and instead require routines that change buffer pages to call MarkBufferDirty (which does exactly what it says). We also require that they do so before calling XLogInsert; this takes care of the synchronization requirement documented in SyncOneBuffer. Note that because bufmgr takes the buffer content lock (in shared mode) while writing out any buffer, it doesn't matter whether MarkBufferDirty is executed before the buffer content change is complete, so long as the content change is completed before releasing exclusive lock on the buffer. So it's OK to set the dirtybit before we fill in the LSN. This eliminates the former kluge of needing to set the dirtybit in LockBuffer. Aside from making the code more transparent, we can also add some new debugging assertions, in particular that the caller of MarkBufferDirty must hold the buffer content lock, not merely a pin.
* Improve gist XLOG code to follow the coding rules needed to preventTom Lane2006-03-30
| | | | | | | torn-page problems. This introduces some issues of its own, mainly that there are now some critical sections of unreasonably broad scope, but it's a step forward anyway. Further cleanup will require some code refactoring that I'd prefer to get Oleg and Teodor involved in.
* Suppress attempts to report dropped tables to the stats collector from aTom Lane2006-03-30
| | | | | | | | startup or recovery process. Since such a process isn't a real backend, pgstat.c gets confused. This accounts for recent reports of strange "invalid server process ID -1" log messages during crash recovery. There isn't any point in attempting to make the report, since we'll discard stats in such scenarios anyhow.
* Clean up and document the API for XLogOpenRelation and XLogReadBuffer.Tom Lane2006-03-29
| | | | | | | | This commit doesn't make much functional change, but it does eliminate some duplicated code --- for instance, PageIsNew tests are now done inside XLogReadBuffer rather than by each caller. The GIST xlog code still needs a lot of love, but I'll worry about that separately.
* TablespaceCreateDbspace should function normally even on platforms that do notTom Lane2006-03-29
| | | | | | have symlinks (ie, Windows). Although it'll never be called on to do anything useful during normal operation on such a platform, it's still needed to re-create dropped directories during WAL replay.
* Disable full_page_writes, because turning it off risks causing crash-recoveryTom Lane2006-03-28
| | | | | | | | | | failures even when the hardware and OS did nothing wrong. Per recent analysis of a problem report from Alex Bahdushka. For the moment I've just diked out the test of the parameter, rather than removing the GUC infrastructure and documentation, in case we conclude that there's something salvageable there. There seems no chance of it being resurrected in the 8.1 branch though.
* Repair longstanding error in btree xlog replay: XLogReadBuffer should beTom Lane2006-03-28
| | | | | | | | | | passed extend = true whenever we are reading a page we intend to reinitialize completely, even if we think the page "should exist". This is because it might indeed not exist, if the relation got truncated sometime after the current xlog record was made and before the crash we're trying to recover from. These two thinkos appear to explain both of the old bug reports discussed here: http://archives.postgresql.org/pgsql-hackers/2005-05/msg01369.php
* Comments in IndexBuildHeapScan describe the indexing of recently-deadTom Lane2006-03-24
| | | | | | | | | | tuples as needed "to keep VACUUM from complaining", but actually there is a more compelling reason to do it: failure to do so violates MVCC semantics. This is because a pre-existing serializable transaction might try to use the index after we finish (re)building it, and it might fail to find tuples it should be able to see. We got this mostly right, but not in the case of partial indexes: the code mistakenly discarded recently-dead tuples for partial indexes. Fix that, and adjust the comments.
* Arrange to emit a description of the current XLOG record as error contextTom Lane2006-03-24
| | | | | | | | | when an error occurs during xlog replay. Also, replace the former risky 'write into a fixed-size buffer with no overflow detection' API for XLOG record description routines; use an expansible StringInfo instead. (The latter accounts for most of the patch bulk.) Qingqing Zhou
* Add error location info to ResTarget parse nodes. Allows error cursor to be ↵Tom Lane2006-03-23
| | | | | | supplied for various mistakes involving INSERT and UPDATE target columns.
* Minor refactoring: initialize_SSL() only returns 0, so it should returnNeil Conway2006-03-21
| | | | "void" rather than "int".
* Fix a few places that were checking for the return value of palloc() to beNeil Conway2006-03-19
| | | | | non-NULL: palloc() ereports on OOM, so we can safely assume it returns a valid pointer.
* The call to DNSServiceRegistrationCreate in postmaster.c does incorrectNeil Conway2006-03-18
| | | | | | | | | byte-swapping on the port number which causes the call to fail on Intel Macs. This patch uses htons() instead of htonl() and fixes this bug. Ashley Clark
* Fix bug introduced into mergejoin logic by performance improvement patch ofTom Lane2006-03-17
| | | | | | | | | | | | | | 2005-05-13. When we find that a new inner tuple can't possibly match any outer tuple (because it contains a NULL), we can't immediately skip the tuple when we are in NEXTINNER state. Doing so can lead to emitting multiple copies of the tuple in FillInner mode, because we may rescan the tuple after returning to a previous marked tuple. Instead, proceed to NEXTOUTER state the same as we used to do. After we've found that there's no need to return to the marked position, we can go to SKIPINNER_ADVANCE state instead of SKIP_TEST when the inner tuple is unmatchable; this preserves the performance improvement. Per bug report from Bruce. I also made a couple of cosmetic code rearrangements and added a regression test for the problem.
* Fix invalid use of #if within a macro, per Laurenz Albe. Also try toTom Lane2006-03-16
| | | | | make the LDAP code's error messages look like they were written by someone who had heard of our style guidelines.
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