- 23 May, 2007 1 commit
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unknown authored
into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build-work
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- 22 May, 2007 2 commits
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unknown authored
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unknown authored
Include all the additional test suites in the binary packages ("tar.gz"). This is the tar.gz part of the fixes for bug#26609; for RPMs it is already done. scripts/make_binary_distribution.sh: Include all the additional test suites (for now: "funcs_1", "funcs_2", "row_lock") in the binary packages ("tar.gz"). Take them "as is", without any file filtering (except for the BK subdirectories "SCCS"). This is the tar.gz part of the fixes for bug#26609; for RPMs it is already done. Use this opportunity to correct the language in some comments.
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- 16 May, 2007 13 commits
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unknown authored
into trift2.:/MySQL/M50/push-5.0
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into trift2.:/MySQL/M50/push-5.0
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unknown authored
into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build
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into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-4.1-build
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into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build
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unknown authored
into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build
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into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build
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unknown authored
into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build-work
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into adventure.(none):/home/thek/Development/cpp/mysql-5.0-runtime
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unknown authored
- Problem was reported as a SP variable using itself as right value inside SUBSTR caused corruption of data. - This bug could not be verified in either 5.0bk or 5.1bk - Added test case to prevent future regressions. mysql-test/r/sp-vars.result: Added test case for a reported regression which couldn't be verified. mysql-test/t/sp-vars.test: Added test case for a reported regression which couldn't be verified.
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unknown authored
sql/sql_insert.cc: Do not access delayed thread memory without a mutex.
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into vajra.(none):/opt/local/work/mysql-5.0-21483 sql/sp_head.cc: Auto merged sql/sql_base.cc: Auto merged sql/sql_insert.cc: Auto merged sql/sql_lex.h: Auto merged
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Bug#21483 "Server abort or deadlock on INSERT DELAYED with another implicit insert" Also fixes and adds test cases for bugs: 20497 "Trigger with INSERT DELAYED causes Error 1165" 21714 "Wrong NEW.value and server abort on INSERT DELAYED to a table with a trigger". Post-review fixes. Problem: In MySQL INSERT DELAYED is a way to pipe all inserts into a given table through a dedicated thread. This is necessary for simplistic storage engines like MyISAM, which do not have internal concurrency control or threading and thus can not achieve efficient INSERT throughput without support from SQL layer. DELAYED INSERT works as follows: For every distinct table, which can accept DELAYED inserts and has pending data to insert, a dedicated thread is created to write data to disk. All user connection threads that attempt to delayed-insert into this table interact with the dedicated thread in producer/consumer fashion: all records to-be inserted are pushed into a queue of the dedicated thread, which fetches the records and writes them. In this design, client connection threads never open or lock the delayed insert table. This functionality was introduced in version 3.23 and does not take into account existence of triggers, views, or pre-locking. E.g. if INSERT DELAYED is called from a stored function, which, in turn, is called from another stored function that uses the delayed table, a deadlock can occur, because delayed locking by-passes pre-locking. Besides: * the delayed thread works directly with the subject table through the storage engine API and does not invoke triggers * even if it was patched to invoke triggers, if triggers, in turn, used other tables, the delayed thread would have to open and lock involved tables (use pre-locking). * even if it was patched to use pre-locking, without deadlock detection the delayed thread could easily lock out user connection threads in case when the same table is used both in a trigger and on the right side of the insert query: the delayed thread would not release locks until all inserts are complete, and user connection can not complete inserts without having locks on the tables used on the right side of the query. Solution: These considerations suggest two general alternatives for the future of INSERT DELAYED: * it is considered a full-fledged alternative to normal INSERT * it is regarded as an optimisation that is only relevant for simplistic engines. Since we missed our chance to provide complete support of new features when 5.0 was in development, the first alternative currently renders infeasible. However, even the second alternative, which is to detect new features and convert DELAYED insert into a normal insert, is not easy to implement. The catch-22 is that we don't know if the subject table has triggers or is a view before we open it, and we only open it in the delayed thread. We don't know if the query involves pre-locking until we have opened all tables, and we always first create the delayed thread, and only then open the remaining tables. This patch detects the problematic scenarios and converts DELAYED INSERT to a normal INSERT using the following approach: * if the statement is executed under pre-locking (e.g. from within a stored function or trigger) or the right side may require pre-locking, we detect the situation before creating a delayed insert thread and convert the statement to a conventional INSERT. * if the subject table is a view or has triggers, we shutdown the delayed thread and convert the statement to a conventional INSERT. mysql-test/r/insert.result: Update test results. mysql-test/t/insert.test: Add a test case for Bug#21483, Bug#20497, Bug#21714 (INSERT DELAYED and stored routines, triggers). sql/sp_head.cc: Upgrade lock type to TL_WRITE when computing the pre-locking set. sql/sql_base.cc: Use a new method. sql/sql_insert.cc: INSERT DELAYED and pre-locking: - if under pre-locking, upgrade the lock type to TL_WRITE and proceed as a normal write - if DELAYED table has triggers, also request a lock upgrade. - make sure errors in the delayed thread are propagated correctly sql/sql_lex.h: Add a method to check if a parsed tree refers to stored routines.
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- 15 May, 2007 4 commits
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unknown authored
Several string comparisons could never yield true because they had an 'x' guard added to the variable but not to the constant value. Fix that by guarding both sides. scripts/make_win_bin_dist: Fix bug#27833 "Bourne shell string comparison issue in scripts/make_win_bin_dist": Several string comparisons could never yield true because they had an 'x' guard added to the variable but not to the constant value. Fix that by guarding both sides. Use this occasion to apply some corrections to the comments and the usage text. Also, ensure the ".pdb" file is always optional.
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into vajra.(none):/opt/local/work/mysql-5.0-runtime
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into vajra.(none):/opt/local/work/mysql-5.0-runtime sql/item.cc: Auto merged sql/item_func.cc: Auto merged sql/mysql_priv.h: Auto merged sql/set_var.cc: Auto merged sql/sql_class.h: Auto merged sql/sql_insert.cc: Auto merged sql/sql_parse.cc: Auto merged sql/sql_prepare.cc: Auto merged sql/sql_yacc.yy: Auto merged
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unknown authored
into vajra.(none):/opt/local/work/mysql-4.1-runtime
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- 14 May, 2007 7 commits
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unknown authored
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unknown authored
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into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-4.1-build-work
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into pippilotta.erinye.com:/shared/home/df/mysql/build/mysql-5.0-build-work
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sql/sql_insert.cc: Fix a compile-time warning (log_on is not used in embedded).
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- 12 May, 2007 2 commits
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unknown authored
into bk-internal.mysql.com:/data0/bk/mysql-5.0-opt
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unknown authored
a crash when the left operand of the predicate is evaluated to NULL. It happens when the rows from the inner tables (tables from the subquery) are accessed by index methods with key values obtained by evaluation of the left operand of the subquery predicate. When this predicate is evaluated to NULL an alternative access with full table scan is used to check whether the result set returned by the subquery is empty or not. The crash was due to the fact the info about the access methods used for regular key values was not properly restored after a switch back from the full scan access method had occurred. The patch restores this info properly. The same problem existed for queries with IN subquery predicates if they were used not at the top level of the queries. mysql-test/r/subselect3.result: Added a test case for bug #28375. mysql-test/t/subselect3.test: Added a test case for bug #28375. sql/item_subselect.cc: Fixed bug #28375: a query with an NOT IN subquery predicate may cause a crash when the left operand of the predicate is evaluated to NULL. It happens when the rows from the inner tables (tables from the subquery) are accessed by index methods with key values obtained by evaluation of the left operand of the subquery predicate. When this predicate is evaluated to NULL an alternative access with full table scan is used to check whether the result set returned by the subquery is empty or not. The crash was due to the fact the info about the access methods used for regular key values was not properly restored after a switch back from the full scan access method had occurred. The patch restores this info properly. sql/sql_select.h: Fixed bug #28375: a query with an NOT IN subquery predicate may cause a crash when the left operand of the predicate is evaluated to NULL. In the JOIN_TAB structure two fields have been added to save info about index methods used to access the subquery rows. The saved info is used after a switch back from the alternative full scan access method has occurred. The full scan is used when the left operand of the subquery predicate is evaluated to NULL.
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- 11 May, 2007 11 commits
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unknown authored
into moonbone.local:/mnt/gentoo64/work/27878-bug-5.0-opt-mysql
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unknown authored
Corrected test case for the bug#27878. mysql-test/t/grant.test: Corrected test case for the bug#27878. mysql-test/r/grant.result: Corrected test case for the bug#27878.
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unknown authored
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unknown authored
into mysql.com:/home/hf/work/27957/my50-27957
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into moonbone.local:/mnt/gentoo64/work/27878-bug-5.0-opt-mysql
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unknown authored
database. If a user has a right to update anything in the current database then the access was granted and further checks of access rights for underlying tables wasn't done correctly. The check is done before a view is opened and thus no check of access rights for underlying tables can be carried out. This allows a user to update through a view a table from another database for which he hasn't enough rights. Now the mysql_update() and the mysql_test_update() functions are forces re-checking of access rights after a view is opened. mysql-test/t/grant.test: Added a test case for the bug#27878: Unchecked privileges on a view referring to a table from another database. mysql-test/r/grant.result: Added a test case for the bug#27878: Unchecked privileges on a view referring to a table from another database. sql/sql_update.cc: Bug#27878: Unchecked privileges on a view referring to a table from another database. Now the mysql_update() function forces re-checking of access rights after the view is opened. sql/sql_prepare.cc: Bug#27878: Unchecked privileges on a view referring to a table from another database. Now the mysql_test_update() function forces re-checking of access rights after the view is opened.
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into mockturtle.local:/home/dlenev/src/mysql-5.0-cts-3 sql/mysql_priv.h: Auto merged sql/sql_insert.cc: Auto merged sql/sql_prepare.cc: Auto merged sql/sql_yacc.yy: Auto merged
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unknown authored
Bug #20662 "Infinite loop in CREATE TABLE IF NOT EXISTS ... SELECT with locked tables" Bug #20903 "Crash when using CREATE TABLE .. SELECT and triggers" Bug #24738 "CREATE TABLE ... SELECT is not isolated properly" Bug #24508 "Inconsistent results of CREATE TABLE ... SELECT when temporary table exists" Deadlock occured when one tried to execute CREATE TABLE IF NOT EXISTS ... SELECT statement under LOCK TABLES which held read lock on target table. Attempt to execute the same statement for already existing target table with triggers caused server crashes. Also concurrent execution of CREATE TABLE ... SELECT statement and other statements involving target table suffered from various races (some of which might've led to deadlocks). Finally, attempt to execute CREATE TABLE ... SELECT in case when a temporary table with same name was already present led to the insertion of data into this temporary table and creation of empty non-temporary table. All above problems stemmed from the old implementation of CREATE TABLE ... SELECT in which we created, opened and locked target table without any special protection in a separate step and not with the rest of tables used by this statement. This underminded deadlock-avoidance approach used in server and created window for races. It also excluded target table from prelocking causing problems with trigger execution. The patch solves these problems by implementing new approach to handling of CREATE TABLE ... SELECT for base tables. We try to open and lock table to be created at the same time as the rest of tables used by this statement. If such table does not exist at this moment we create and place in the table cache special placeholder for it which prevents its creation or any other usage by other threads. We still use old approach for creation of temporary tables. Also note that we decided to postpone introduction of some tests for concurrent behaviour of CREATE TABLE ... SELECT till 5.1. The main reason for this is absence in 5.0 ability to set @@debug variable at runtime, which can be circumvented only by using several test files with individual .opt files. Since the latter is likely to slowdown test-suite unnecessary we chose not to push this tests into 5.0, but run them manually for this version and later push their optimized version into 5.1 mysql-test/r/create.result: Extended test coverage for CREATE TABLE ... SELECT. In particular added tests for bug #24508 "Inconsistent results of CREATE TABLE ... SELECT when temporary table exists" and bug #20662 "Infinite loop in CREATE TABLE IF NOT EXISTS ... SELECT with locked tables". mysql-test/r/trigger.result: Added test case for bug #20903 "Crash when using CREATE TABLE .. SELECT and triggers" mysql-test/t/create.test: Extended test coverage for CREATE TABLE ... SELECT. In particular added tests for bug #24508 "Inconsistent results of CREATE TABLE ... SELECT when temporary table exists" and bug #20662 "Infinite loop in CREATE TABLE IF NOT EXISTS ... SELECT with locked tables". mysql-test/t/trigger.test: Added test case for bug #20903 "Crash when using CREATE TABLE .. SELECT and triggers" sql/lock.cc: Now for creation of name-lock placeholder in lock_table_name() we use auxiliary function table_cache_insert_placeholder(). sql/mysql_priv.h: Made build_table_path() function available outside of sql_table.cc file. reopen_name_locked_table() now has 3rd argument which controls linking in of table being opened into THD::open_tables (this is useful in cases when placeholder used for name-locking is already linked into this list). Added declaration of auxiliary function table_cache_insert_placeholder() which is used for creation of table placeholders for name-locking. Added declaration of table_cache_has_open_placeholder() function which can be used for checking if table cache contains an open placeholder for the table and if this placeholder was created by another thread. (This function is needed only in 5.0 where we use it in various versions of CREATE TABLE in order to protect it from concurrent CREATE TABLE ... SELECT operations for the table. Starting from 5.1 we use different approach so it is going to be removed there). Made close_old_data_files() static within sql_base.cc file. Added auxiliary drop_open_table() routine. Moved declaration of refresh_version to table.h header to make it accessible from inline methods of TABLE class. MYSQL_OPEN_IGNORE_LOCKED_TABLES flag is no longer used. Instead MYSQL_OPEN_TEMPORARY_ONLY option was added. sql/sql_base.cc: Added support for the new approach to the handling of CREATE TABLE ... SELECT for base tables. Now we try to open and lock table to be created at the same time as the rest of tables used by this statement. If such table does not exist at this moment we create and place in the table cache special placeholder for it which prevents its creation or any other usage by other threads. Note significant distinctions of this placeholder from the placeholder used for normal name-lock: 1) It is treated like open table by other name-locks so it does not allow name-lock taking operations like DROP TABLE or RENAME TABLE to proceed. 2) it is linked into THD::open_tables list and automatically removed during close_thread_tables() call. open_tables(): Implemented logic described above. To do this added auxiliary check_if_table_exists() function. Removed support for MYSQL_OPEN_IGNORE_LOCKED_TABLES option which is no longer used. Added MYSQL_OPEN_TEMPORARY_ONLY which is used to restrict search for temporary tables only. close_cached_tables()/close_thread_table()/reopen_tables()/ close_old_data_files()/table_is_used()/remove_table_from_cache(): Added support for open placeholders (note that we also use them when we need to re-open tables during flush). Added auxiliary drop_open_table() routine. reopen_name_locked_table(): Now has 3rd argument which controls linking in of table being opened into THD::open_tables (this is useful in cases when placeholder used for name-locking is already linked into this list). Added auxiliary table_cache_insert_placeholder() routine which simplifies creation of placeholders used for name-locking. Added table_cache_has_open_placeholder() function which can be used for checking if table cache contains an open placeholder for the table and if this placeholder was created by another thread. (This function is needed only in 5.0 where we use it in various versions of CREATE TABLE in order to protect it from concurrent CREATE TABLE ... SELECT operations for the table. Starting from 5.1 we use different approach so it is going to be removed there). sql/sql_handler.cc: Adjusted mysql_ha_mark_tables_for_reopen() routine to properly handle placeholders which now can be linked into open tables list. sql/sql_insert.cc: Introduced new approach to handling of base tables in CREATE TABLE ... SELECT statement. Now we try to open and lock table to be created at the same time as the rest of tables used by this statement. If such table does not exist at this moment we create and place in the table cache special placeholder for it which prevents its creation or any other usage by other threads. By doing this we avoid races which existed with previous approach in which we created, opened and locked target in separate step without any special protection. This also allows properly calculate prelocking set in cases when target table already exists and has some on insert triggers. Note that we don't employ the same approach for temporary tables (this is okay as such tables are unaffected by other threads). Changed create_table_from_items() and select_create methods to implement this approach. sql/sql_parse.cc: The new approach to handling of CREATE TABLE ... SELECT for base tables assumes that all tables (including table to be created) are opened and (or) locked at the same time. So in cases when we create base table we have to pass to open_and_lock_tables() table list which includes target table. sql/sql_prepare.cc: The new approach to handling of CREATE TABLE ... SELECT for base tables assumes that all tables (including table to be created) are opened and (or) locked at the same time. So in cases when we create base table we have to pass to open_and_lock_tables() table list which includes target table. sql/sql_table.cc: Now mysql_create_table_internal(), mysql_create_like_table() and mysql_alter_table() not only check that destination table doesn't exist on disk but also check that there is no create placeholder in table cache for it (i.e. there is no CREATE TABLE ... SELECT operation in progress for it). Note that starting from 5.1 we use different approach in order to to protect CREATE TABLE ... SELECT from concurrent CREATE TABLE (ALTER TABLE ... RENAME) operations, the latter simply take name-locks on table before its creation (on target table name before renaming). Also made build_table_path() available from other files and asjusted calls to reopen_name_locked_table(), which now takes extra argument, which controls linking of open table into THD::open_tables list. sql/sql_trigger.cc: reopen_name_locked_tables() now has one more argument which controls linking of opened table into the THD::open_tables list. sql/sql_yacc.yy: The new approach to handling of CREATE TABLE ... SELECT statement for base tables assumes that all tables including table to be created are open and (or) locked at the same time. Therefore we need to set correct lock for target table. sql/table.h: Moved declaration of refresh_version variable from mysql_priv.h to make it accessible from inline methods of TABLE class. Renamed TABLE::locked_by_flush member to open_placeholder since now it is also used for taking exclusive name-lock and not only by flush. Introduced TABLE::is_name_opened() helper method which can be used to distinguish TABLE instances corresponding to open tables or placeholders for them from closed instances (e.g. due to their old version). Also introduced TABLE::needs_reopen_or_name_lock() helper which allows to check if TABLE instance corresponds to outdated version of table or to name-lock placeholder. Introduced TABLE_LIST::create member which marks elements of table list corresponds to the table to be created. Adjusted TABLE_LIST::placeholder() method to take into account name-lock placeholders for tables to be created (this, for example, allows to properly handle such placeholders in lock_tables()).
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unknown authored
mysql-test/r/type_datetime.result: result fixed mysql-test/t/type_datetime.test: testcase fixed sql/item_func.cc: my_decimal_length_to_precision used sql/my_decimal.h: merging fix
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unknown authored
by moving yet another relevant flag to it from struct LEX. mysql-test/r/ps.result: Update result. mysql-test/r/ps_1general.result: Update result. mysql-test/t/ps.test: New error code. mysql-test/t/ps_1general.test: New error code. sql/sql_lex.cc: Move stmt_prepare_mode to Lex_input_stream. sql/sql_lex.h: Move stmt_prepare_mode to class Lex_input_stream sql/sql_prepare.cc: Move stmt_prepare_mode to Lex_input_stream sql/sql_yacc.yy: Remove dead code.
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unknown authored
into mysql.com:/home/hf/work/27957/my50-27957 mysql-test/r/cast.result: Auto merged sql/item_func.cc: Auto merged sql/item_func.h: Auto merged sql/my_decimal.h: merging
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