- 23 Aug, 2007 1 commit
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malff/marcsql@weblab.(none) authored
since this flag was explicitly removed in pushbuild for GCOV builds. BUILD_CMD => ['sh', '-c', 'perl -i.bak -pe "s/ \\\\\$static_link//" ' . 'BUILD/compile-pentium-gcov; BUILD/compile-pentium-gcov'], Moving $static_link to SETUP.sh broke this, and is now fixed. Should this flag be needed on some platforms, the proper location is compile-<platform>-gcov Tested the amd64 and pentium64 build fine without it, and can run NDB tests.
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- 22 Aug, 2007 4 commits
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malff/marcsql@weblab.(none) authored
into weblab.(none):/home/marcsql/TREE/mysql-5.0-30237
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malff/marcsql@weblab.(none) authored
into weblab.(none):/home/marcsql/TREE/mysql-5.0-23062
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malff/marcsql@weblab.(none) authored
into weblab.(none):/home/marcsql/TREE/mysql-5.0-30237
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malff/marcsql@weblab.(none) authored
This is a performance bug, related to the parsing or 'OR' and 'AND' boolean expressions. Let N be the number of expressions involved in a OR (respectively AND). When N=1 For example, "select 1" involve only 1 term: there is no OR operator. In 4.0 and 4.1, parsing expressions not involving OR had no overhead. In 5.0, parsing adds some overhead, with Select->expr_list. With this patch, the overhead introduced in 5.0 has been removed, so that performances for N=1 should be identical to the 4.0 performances, which are optimal (there is no code executed at all) The overhead in 5.0 was in fact affecting significantly some operations. For example, loading 1 Million rows into a table with INSERTs, for a table that has 100 columns, leads to parsing 100 Millions of expressions, which means that the overhead related to Select->expr_list is executed 100 Million times ... Considering that N=1 is by far the most probable expression, this case should be optimal. When N=2 For example, "select a OR b" involves 2 terms in the OR operator. In 4.0 and 4.1, parsing expressions involving 2 terms created 1 Item_cond_or node, which is the expected result. In 5.0, parsing these expression also produced 1 node, but with some extra overhead related to Select->expr_list : creating 1 list in Select->expr_list and another in Item_cond::list is inefficient. With this patch, the overhead introduced in 5.0 has been removed so that performances for N=2 should be identical to the 4.0 performances. Note that the memory allocation uses the new (thd->mem_root) syntax directly. The cost of "is_cond_or" is estimated to be neglectable: the real problem of the performance degradation comes from unneeded memory allocations. When N>=3 For example, "select a OR b OR c ...", which involves 3 or more terms. In 4.0 and 4.1, the parser had no significant cost overhead, but produced an Item tree which is difficult to evaluate / optimize during runtime. In 5.0, the parser produces a better Item tree, using the Item_cond constructor that accepts a list of children directly, but at an extra cost related to Select->expr_list. With this patch, the code is implemented to take the best of the two implementations: - there is no overhead with Select->expr_list - the Item tree generated is optimized and flattened. This is achieved by adding children nodes into the Item tree directly, with Item_cond::add(), which avoids the need for temporary lists and memory allocation Note that this patch also provide an extra optimization, that the previous code in 5.0 did not provide: expressions are flattened in the Item tree, based on what the expression already parsed is, and not based on the order in which rules are reduced. For example : "(a OR b) OR c", "a OR (b OR c)" would both be represented with 2 Item_cond_or nodes before this patch, and with 1 node only with this patch. The logic used is based on the mathematical properties of the OR operator (it's associative), and produces a simpler tree.
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- 21 Aug, 2007 2 commits
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thek@adventure.(none) authored
into adventure.(none):/home/thek/Development/cpp/mysql-5.0-runtime
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thek@adventure.(none) authored
Although the query cache doesn't support retrieval of statements containing column level access control, it was still possible to cache such statements thus wasting memory. This patch extends the access control check on the target tables to avoid caching a statement with column level restrictions. Views are excepted and can be cached but only retrieved by super user account.
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- 20 Aug, 2007 1 commit
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malff/marcsql@weblab.(none) authored
into weblab.(none):/home/marcsql/TREE/mysql-5.0-rt-merge
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- 18 Aug, 2007 1 commit
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tsmith@ramayana.hindu.god authored
into ramayana.hindu.god:/home/tsmith/m/bk/maint/50
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- 17 Aug, 2007 2 commits
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thek@adventure.(none) authored
into adventure.(none):/home/thek/Development/cpp/mysql-5.0-runtime
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thek@adventure.(none) authored
Although the query cache doesn't support retrieval of statements containing column level access control, it was still possible to cache such statements thus wasting memory. This patch extends the access control check on the target tables to avoid caching a statement with column level restrictions.
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- 16 Aug, 2007 3 commits
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davi@moksha.local authored
This is a follow up for the patch for Bug#26162 "Trigger DML ignores low_priority_updates setting", where the stored procedure ignores the session setting of low_priority_updates. For every table open operation with default write (TL_WRITE_DEFAULT) lock_type, downgrade the lock type to the session setting of low_priority_updates.
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tsmith@ramayana.hindu.god authored
Revert the fix for bug 21587. That bug will be re-opened, and a new fix must be created.
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malff/marcsql@weblab.(none) authored
This patch provides compile helper scripts only, no server logic is affected. Before this patch, GCOV and GPROF build scripts were only provided for pentium platforms. With this patch, pentium, pentium64 and amd64 platforms have associated helper build scripts. The GCOV and GPROF specific compilation flags are set once in SETUP.sh, to avoid code duplication.
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- 15 Aug, 2007 7 commits
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tsmith@ramayana.hindu.god authored
Apply innodb-5.0-ss1696 snapshot Fixes: - Bug#20090: InnoDB: Error: trying to declare trx to enter InnoDB - Bug#23710: crash_commit_before fails if innodb_file_per_table=1 At InnoDB startup consider the case where log scan went beyond checkpoint_lsn as a crash and initiate crash recovery code path. - Bug#28781: InnoDB increments auto-increment value incorrectly with ON DUPLICATE KEY UPDATE We need to do some special AUTOINC handling for the following case: INSERT INTO t (c1,c2) VALUES(x,y) ON DUPLICATE KEY UPDATE ... We need to use the AUTOINC counter that was actually used by MySQL in the UPDATE statement, which can be different from the value used in the INSERT statement. - Bug#29097: fsp_get_available_space_in_free_extents() is capped at 4TB Fix by typecasting the variables before multiplying them, so that the result of the multiplication is of type "unsigned long long". - Bug#29155: Innodb "Parallel recovery" is not prevented Fix by enabling file locking on FreeBSD. It has been disabled because InnoDB has refused to start on FreeBSD & LinuxThreads, but now it starts just fine.
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tsmith@ramayana.hindu.god authored
into ramayana.hindu.god:/home/tsmith/m/bk/maint/50
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davi@moksha.local authored
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lars/lthalmann@dl145h.mysql.com authored
into mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge
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lars/lthalmann@dl145k.mysql.com authored
into mysql.com:/nfsdisk1/lars/MERGE/mysql-5.0-merge
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into mysql.com:/nfsdisk1/lars/MERGE/mysql-4.1-merge
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davi@moksha.local authored
mysql_ha_open calls mysql_ha_close on the error path (unsupported) to close the (opened) table before inserting it into the tables hash list handler_tables_hash) but mysql_ha_close only closes tables which are on the hash list, causing the table to be left open and locked. This change moves the table close logic into a separate function that is always called on the error path of mysql_ha_open or on a normal handler close (mysql_ha_close).
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- 14 Aug, 2007 1 commit
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gshchepa/uchum@gleb.loc authored
into gleb.loc:/home/uchum/work/bk/5.0-opt
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- 13 Aug, 2007 4 commits
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istruewing@synthia.local authored
into synthia.local:/home/mydev/mysql-5.0-axmrg
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tsmith@ramayana.hindu.god authored
into ramayana.hindu.god:/home/tsmith/m/bk/maint/50
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istruewing@synthia.local authored
into synthia.local:/home/mydev/mysql-5.0-axmrg
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istruewing@synthia.local authored
into synthia.local:/home/mydev/mysql-4.1-axmrg
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- 10 Aug, 2007 1 commit
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gshchepa/uchum@gleb.loc authored
into gleb.loc:/home/uchum/work/bk/5.0-opt
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- 08 Aug, 2007 1 commit
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kostja@bodhi.(none) authored
into bodhi.(none):/opt/local/work/mysql-5.0-runtime
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- 07 Aug, 2007 4 commits
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bar@mysql.com/bar.myoffice.izhnet.ru authored
under terms of bug#28875 for better performance. The change appeared to require more changes in item_cmpfunc.cc, which is dangerous in 5.0. Conversion between a latin1 column and an ascii string constant stopped to work.
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cmiller@zippy.cornsilk.net authored
into zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint
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cmiller@zippy.cornsilk.net authored
into zippy.cornsilk.net:/home/cmiller/work/mysql/mysql-5.0-maint
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cmiller@zippy.cornsilk.net authored
Two character mappings were way off (backtick and tilde were "E" and "Y"!), and three others were slightly rotated. The first would cause collisions, and the latter was probably benign. Now, assign the character mappings exactly to their normal values.
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- 06 Aug, 2007 8 commits
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gkodinov/kgeorge@magare.gmz authored
into magare.gmz:/home/kgeorge/mysql/autopush/B29536-5.0-opt
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gkodinov/kgeorge@magare.gmz authored
MySQL replicates the time zone only when operations that involve it are performed. This is controlled by a flag. But this flag is set only on successful operation. The flag must be set also when there is an error that involves a timezone (so the master would replicate the error to the slaves). Fixed by moving the setting of the flag before the operation (so it apples to errors as well).
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kostja@bodhi.(none) authored
into bodhi.(none):/opt/local/work/mysql-5.0-runtime
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kostja@bodhi.(none) authored
VIEW". mysql_list_fields() C API function would incorrectly set MYSQL_FIELD::decimals member for some view columns. The problem was in an incomplete implementation of Item_ident_for_show::make_field(), which is responsible for view columns metadata.
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igor@olga.mysql.com authored
a problem for BIT type values different from the one reported for the bug.
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kent@mysql.com/kent-amd64.(none) authored
Corrected install path
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kent@mysql.com/kent-amd64.(none) authored
Copy embedded .pdb and static debug lib
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igor@olga.mysql.com authored
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