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- 04 May, 2011 2 commits
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unknown authored
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Igor Babaev authored
The bug was introduced by the patch that fixed bug 717577.
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- 02 May, 2011 3 commits
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unknown authored
Merge with 5.3
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Vladislav Vaintroub authored
presumably neither TMP nor TEMP environment variable are set.
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Michael Widenius authored
mysql-test/suite/funcs_1/r/storedproc.result: Fixed test failure mysql-test/suite/funcs_1/t/storedproc.test: Fixed test failure (The error changed as syntax for alter changed with ALTER ONLINE) storage/maria/ha_maria.cc: fixed compiler warning
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- 30 Apr, 2011 1 commit
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Igor Babaev authored
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- 28 Apr, 2011 3 commits
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Michael Widenius authored
Added ALTER ONLINE TABLE, which will give an error if the change can't be done 'instantly' (without a table copy) mysql-test/r/alter_table_online.result: Test new feature mysql-test/t/alter_table_online.test: Test new feature sql/handler.cc: Added comment sql/lex.h: Added ONLINE keyword sql/mysql_priv.h: Added option to alter table to require online operation sql/share/errmsg.txt: Added error message if ONLINE can't be done sql/sql_lex.h: Added online option sql/sql_parse.cc: Added online option to mysql_alter_table() sql/sql_table.cc: Added test that gives error if table can't be done instantly when requsted to be online. Fixed wrong test if table includes a VARCHAR Fixed wrong (but unlikely) handling of error conditions in ALTER table sql/sql_yacc.yy: Added ALTER ONLINE TABLE syntax storage/maria/ha_maria.cc: Fixed bug where 'start_bulk_insert' used too small buffer if used with unknown number of rows
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Michael Widenius authored
This makes it possible to do safe multi volume snapshots as long as one snapshots the volume with the transaction logs last. include/mysql_com.h: Added REFRESH_CHECKPOINT mysql-test/r/flush.result: Added test of new FLUSH TABLES syntax + calls to checkpoint_status handler calls mysql-test/t/flush.test: Added test of new FLUSH TABLES syntax + calls to checkpoint_status handler calls sql/handler.cc: Added code to call checkpoint_state for all handlertons that supports it sql/handler.h: Added new checkpoint_state() handlerton call to temporarly disable checkpoints. sql/lex.h: Added CHECKPOINT keyword sql/sql_yacc.yy: Added support for FLUSH TABLES WITH READ LOCK AND DISABLE CHECKPOINT storage/maria/ha_maria.cc: Added handlerton call to disable checkpoints. storage/maria/ma_checkpoint.c: Don't do checkpoint if checkpoints are disabled. storage/maria/ma_static.c: Added maria_checkpoint_disabled storage/maria/maria_def.h: Added maria_checkpoint_disabled storage/xtradb/handler/ha_innodb.cc: Added handlerton call to disable checkpoints. storage/xtradb/include/log0log.h: Added option to log_checkpoint() to allow one to ignore not critical checkpoints during the time checkpoints are disabled. storage/xtradb/log/log0log.c: Added code to allow one to disable checkpoints during a FLUSH TABLES ... DISABLE CHECKPOINT This was done by adding a new argument to log_checkpoint() which tells us when the checkpoint is called by srv_master_thread (which are safe to ignore) storage/xtradb/srv/srv0srv.c: Tell log_checkpoint() that checkpoints from srv_master_thread() are safe to ignore (will just delay recovery time a bit).
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unknown authored
Analysis: Build_equal_items_for_cond() rewrites the WHERE clause in such a way, that it may merge the list join->cond_equal->current_level with the list of child Items in an AND condition of the WHERE clause. The place where this is done is: static COND *build_equal_items_for_cond(THD *thd, COND *cond, COND_EQUAL *inherited) { ... if (and_level) { args->concat(&eq_list); args->concat((List<Item> *)&cond_equal.current_level); } ... } As a result, later transformations on the WHERE clause may change the structure of the list join->cond_equal->current_level without knowing this. Specifically in this bug, Item_in_subselect::inject_in_to_exists_cond creates a new AND of the old WHERE clause and the IN->EXISTS conditions. It then calls fix_fields() for the new AND. Among other things, fix_fields flattens all nested ANDs into one by merging the AND argument lists. When there is a cond_equal for the JOIN, its list of Item_equal objects is attached to the end of the original AND. When a lower-level AND is merged into the top-level one, the argument list of the lower-level AND is concatenated to the list of multiple equalities in the upper-level AND. As a result, when substitute_for_best_equal_field processes the multiple equalities, it turns out that the multiple equality list contains the Items from the lower-level AND which were concatenated to the end of the join->cond_equal->current_level list. This results in a crash because this list must not contain any other Items except for the previously found Item_equal ones. Solution: When performing IN->EXIST predicate injection, and the where clause is an AND, detach the list of Item_equal objects before calling fix_fields on the injected where clause. After fix_fields is done, reattach back the multiple equalities list to the end of the argument list of the new AND.
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- 27 Apr, 2011 3 commits
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Igor Babaev authored
The function test_quick_select by mistake did not update the value of table->quick_condition_rows for index intersection scans though the specification explicitly required to do so from any table access plan once the plan provided a better upper bound for the number of rows selected from the table. It resulted in a bogus, usually very big number saved as the cost of the table access. This, in its turn, in many cases forced the optimizer to make a bad choice of the execution plan for join queries.
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Igor Babaev authored
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Igor Babaev authored
Both these two bugs happened due to the following problem. When a view column is referenced in the query an Item_direct_view_ref object is created that is refers to the Item_field for the column. All references to the same view column refer to the same Item_field. Different references can belong to different AND/OR levels and, as a result, can be included in different Item_equal object. These Item_equal objects may include different constant objects. If these constant objects are substituted for the Item_field created for a view column we have a conflict situation when the second substitution annuls the first substitution. This leads to wrong result sets returned by the query. Bug #724942 demonstrates such an erroneous behaviour. Test case of the bug #717577 produces wrong result sets because best equal fields of the multiple equalities built for different OR levels of the WHERE condition differs. The subsitution for the best equal field in the second OR branch overwrites the the substitution made for the first branch. To avoid such conflicts we have to substitute for the references to the view columns rather than for the underlying field items. To make such substitutions possible we have to include into multiple equalities references to view columns rather than field items created for such columns. This patch modifies the Item_equal class to include references to view columns into multiple equality objects. It also performs a clean up of the class methods and adds more comments. The methods of the Item_direct_view_ref class that assist substitutions for references to view columns has been also added by this patch.
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- 20 Apr, 2011 3 commits
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Igor Babaev authored
In some cases the field max_part_no of the SEL_ARG structure was not initialized. That triggered a Valgrind complain.
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unknown authored
Corrected PBXT test results (explains).
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unknown authored
Analysis: The wrong result is a consquence of sorting the subquery result and then selecting only the first row due to the artificial LIMIT 1 introduced by the fix_fields phase. Normally, if there is an ORDER BY in a subquery, the ORDER is removed (Item_in_subselect::select_in_like_transformer), however if a GROUP BY is transformed into ORDER, this happens later, after the removal of the ORDER clause of subqueries, so we end up with a subquery with an ORDER clause, and an artificially added LIMIT 1. The reason why the same works in the main 5.3 without MWL#89, is that the 5.3 performs all subquery transformations, including IN->EXISTS before JOIN::optimize(). The beginning of JOIN::optimize does: if (having || (select_options & OPTION_FOUND_ROWS)) select_limit= HA_POS_ERROR; which sets the limit back to infinity, thus 5.3 sorts the whole subquery result, and IN performs the lookup into all subquery result rows. Solution: Sorting of subqueries without LIMIT is meaningless. Since LIMIT in subqueries is not supported, the patch removes sorting by setting join->skip_sort_order= true for each subquery JOIN object. This improves a number of execution plans to not perform unnecessary sorting at all.
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- 19 Apr, 2011 1 commit
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Sergei Golubchik authored
-fimplicit-termplates must be in CXXFLAGS not in handlersocket_la_CXXFLAGS. otehrwise automake puts it in the command line too early to override global -fno-implicit-templates
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- 14 Apr, 2011 2 commits
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unknown authored
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unknown authored
The problem was that connection con5, which is supposed to be the leader for the third group, could if timing was bad end up as participant in the second group, causing the test to fail. Fixed by ensuring that group 2 is running before starting the transaction for group 3.
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- 12 Apr, 2011 1 commit
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unknown authored
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- 11 Apr, 2011 2 commits
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
LPBUG 756966 is solved.
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- 08 Apr, 2011 5 commits
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unknown authored
- MWL#116 Group commit - MWL#136 Enhancements for START TRANSACTION WITH CONSISTENT SNAPSHOT - MWL#47 Annotate_rows_log_event - MWL#163 innodb_release_locks_early - Percona patch enhancing row-based replication for tables with no primary key
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
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- 07 Apr, 2011 6 commits
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
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Sergey Petrunya authored
- Let advance_sj_state() save the value of JOIN::cur_dups_producing_tables in POSITION::prefix_dups_producing_tables, and restore_sj_state() restore it.
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unknown authored
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unknown authored
Also implement the InnoDB changes for group commit into innodb_plugin.
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unknown authored
hold the latch across the 2-phase commit, and it is already released at start of prepare (if not before). Rename trx->active_trans to active_flag; since we changed the semantics of the field, renaming should help prevent silent merge errors.
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- 04 Apr, 2011 5 commits
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unknown authored
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unknown authored
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unknown authored
There is no patch because the bug cannot be reproduced any more.
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Sergey Petrunya authored
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Sergey Petrunya authored
Make EXPLAIN better at displaying MRR/BKA: - Update all .result files - Extra comments
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- 03 Apr, 2011 3 commits
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
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Vladislav Vaintroub authored
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