'index_merge_sort_union=off'
When index_merge_sort_union is set to 'off' and index_merge_union is set
to 'on' then any evaluated index merge scan must consist only of ROR scans.
The cheapest out of such index merges must be chosen. This index merge
might not be the cheapest index merge.
The test main.index_merge_innodb is taking very much time,
especially on later versions (10.2 and 10.3).
Some of this could be attributed to the use of INSERT...SELECT,
which is time-consumingly creating explicit record locks in InnoDB
for the locking read in the SELECT part.
In 10.3 and later, some slowness can be attributed to MDEV-12288,
which makes the InnoDB purge thread spend time to reset transaction
identifiers in the inserted records. If we prevent purge from
running before all tables are dropped, the test seems to be
10% faster on an unoptimized debug build on 10.5. (A proper fix
would be to implement MDEV-515 and stop writing row-level undo log
records for inserts into an empty table or partition.)
At the same time, it should not hurt to make main.index_merge_myisam
to use the sequence engine. Not only could it be a little faster,
but the test would be slightly more readable.
For index merge union[or sort union], the estimates are not taken into account while calculating the selectivity of
a condition. So instead of showing the estimates of the index merge union[or sort union], it shows estimates equal to
all the records of the table.
The fix for the issue is to include the selectivity of index merge
union[or sort union] while calculating the selectivity of a condition.
- merge_same_index_scans() may put the same SEL_ARG tree in multiple result plans.
make it call incr_refs() on the SEL_ARG trees that it does key_or() on, because
key_or(sel_arg_tree_1, sel_arg_tree_2) call may invalidate SEL_ARG trees pointed
by sel_arg_tree_1 and sel_arg_tree_2.
- Let "mysqld --help --verbose" list all optimizer options
- Make it possible to add new @@optimizer_switch flags w/o causing .result
changes all over the testsuite:
= Remove "select @@optimizer_switch" from tests that do not need all switches
= Move @@optimizer_switch-specific tests to t/optimizer_switch.test
- Add an @@optimizer_switch flag for table_elimination for debug build
- Better comments
mysql-test/t/index_merge_myisam.test:
MWL#17: Table elimination: last fixes
- Add an @@optimizer_switch flag for table_elimination for debug build
sql/mysql_priv.h:
MWL#17: Table elimination: last fixes
- Add an @@optimizer_switch flag for table_elimination for debug build
sql/mysqld.cc:
MWL#17: Table elimination: last fixes
- Add an @@optimizer_switch flag for table_elimination for debug build
mysql-test/r/index_merge_myisam.result:
Testcases
mysql-test/t/index_merge_myisam.test:
Testcases
sql/strfunc.cc:
Change optimizer_switch from no_xxx to xxx=on/xx=off.
- Add functions to parse the new syntax
- Add support for setting it as a server commandline argument
- Add support for those switches:
= no_index_merge
= no_index_merge_union
= no_index_merge_sort_union
= no_index_merge_intersection
mysql-test/r/index_merge_myisam.result:
Testcases for index_merge related @@optimizer_switch flags.
mysql-test/t/index_merge_myisam.test:
Testcases for index_merge related @@optimizer_switch flags.
sql/set_var.cc:
- Backport @@optimizer_switch support from 6.0
- Add support for setting it as a server commandline argument
sql/sql_class.h:
- Backport @@optimizer_switch support from 6.0
sql/sql_select.h:
- Backport @@optimizer_switch support from 6.0
WL#3397 Refactoring storage engine test cases (for falcon)
It contains also fixes according to code review.
Contents: Testcases which were in history dedicated to InnoDB or MyISAM only.
Modifications:
1. Shift the main testing code into include/<testing field>.inc
Introduce $variables which can be used to omit tests for features which are not supported by
certain storage engines.
2. The storage engine to be tested is assigned within the toplevel script (t/<whatever>_<engine>.test)
via variable $engine_type and the the main testing code is sourced from
include/<testing field>.inc
3. Some toplevel testscripts have to be renamed to
- avoid immediate or future namespace clashes
- show via filename which storage engine is tested
4. Minor code cleanup like remove trailing spaces, some additional comments ....
mysql-test/t/unsafe_binlog_innodb-master.opt:
Rename: mysql-test/t/innodb_unsafe_binlog-master.opt -> mysql-test/t/unsafe_binlog_innodb-master.opt
mysql-test/r/read_many_rows_innodb.result:
Rename: mysql-test/r/innodb-big.result -> mysql-test/r/read_many_rows_innodb.result
mysql-test/t/cache_innodb-master.opt:
Rename: mysql-test/t/innodb_cache-master.opt -> mysql-test/t/cache_innodb-master.opt
mysql-test/t/concurrent_innodb-master.opt:
Rename: mysql-test/t/innodb_concurrent-master.opt -> mysql-test/t/concurrent_innodb-master.opt
BitKeeper/deleted/.del-index_merge.result:
Delete: mysql-test/r/index_merge.result
BitKeeper/deleted/.del-index_merge_innodb.result:
Delete: mysql-test/r/index_merge_innodb.result
BitKeeper/deleted/.del-index_merge_innodb2.result:
Delete: mysql-test/r/index_merge_innodb2.result
BitKeeper/deleted/.del-index_merge_ror.result:
Delete: mysql-test/r/index_merge_ror.result
BitKeeper/deleted/.del-index_merge_ror_cpk.result:
Delete: mysql-test/r/index_merge_ror_cpk.result
mysql-test/r/index_merge_innodb.result:
BitKeeper file /home/matthias/Arbeit/mysql-5.1-engines/src-1/mysql-test/r/index_merge_innodb.result
mysql-test/t/index_merge_innodb.test:
BitKeeper file /home/matthias/Arbeit/mysql-5.1-engines/src-1/mysql-test/t/index_merge_innodb.test
mysql-test/t/index_merge_myisam.test:
BitKeeper file /home/matthias/Arbeit/mysql-5.1-engines/src-1/mysql-test/t/index_merge_myisam.test
mysql-test/include/concurrent.inc:
1. This file contains now the main testing code of the former t/innodb_concurrent.test.
2. It is now sourced by t/concurrent_innodb.test.
mysql-test/include/deadlock.inc:
1. This file contains now the main testing code of the former t/innodb-deadlock.test
2. It is now sourced by t/deadlock_innodb.test.
mysql-test/include/handler.inc:
1. This file contains now the main testing code of the former t/innodb_handler.test + t/handler.test.
2. It is now sourced by t/handler_myisam.test and t/handler_innodb.test.
mysql-test/include/index_merge1.inc:
1. This file contains now the main testing code of the former t/index_merge.test.
2. It is now sourced by t/index_merge_myisam.test.
mysql-test/include/index_merge2.inc:
1. This file contains now the main code of t/index_merge_innodb.test.
2. It is sourced by t/index_merge_myisam.test and t/index_merge_innodb.test.
mysql-test/include/index_merge_2sweeps.inc:
1. This file contains now the main code of the former t/index_merge_innodb2.test.
2. It is sourced by t/index_merge_myisam.test and t/index_merge_innodb.test.
mysql-test/include/index_merge_ror.inc:
1. This file contains now the main code of the former t/index_merge_ror.test.
2. It is sourced by t/index_merge_myisam.test.
mysql-test/include/index_merge_ror_cpk.inc:
1. This file contains now the main testing code of the former t/index_merge_ror_cpk.test.
2. It is now sourced by t/index_merge_myisam.test and t/index_merge_innodb.test.
mysql-test/include/mix1.inc:
1. This file contains now the main testing code of the t/innodb_mysql.test
2. The name mix1.inc was used because the test contains subtests for different fields.
3. It is sourced by t/innodb_mysql.test.
4. Fixes:
- Assign $other_engine_type instead of hardcoded MyISAM.
- improve comment
- remove redundant subtest
- analyze table t4 instead of wrong table t1
- remove not needed "eval set storage_engine = $engine_type;"
mysql-test/include/mix2.inc:
1. This file is a copy of the main testing code of the t/innodb.test
A copy has to be used, because t/innodb.test is to be maintained by INNOBASE only.
2. The name mix2.inc was used because the test contains subtests for different fields.
3. It is sourced by t/mix2_myisam.test.
4. Fixes:
- improved comment
- additional "eval SET SESSION STORAGE_ENGINE = $other_engine_type;" at beginning of tests
- assign $other_engine_type instead of hardcoded MyISAM or HEAP
- assign $other_engine_type where it is needed to preserve test logics
- correct logical bugs
- improve(extend) "checksum table" test
mysql-test/include/query_cache.inc:
1. This file contains now the main testing code of the former t/innodb_cache.test.
2. It is now sourced by t/cache_innodb.test
mysql-test/include/read_many_rows.inc:
1. This file contains now the main testing code of the former t/innodb_big.test.
2. It is now sourced by t/read_many_rows_innodb.test.
mysql-test/include/rowid_order.inc:
1. This file contains now the main testing code of t/rowid_order_innodb.test.
2. It is now sourced by t/rowid_order_innodb.test.
mysql-test/include/unsafe_binlog.inc:
1. This file contains now the main testing code of the former t/innodb_unsafe_binlog.test.
2. It is now sourced by t/unsafe_binlog_innodb.test.
mysql-test/r/cache_innodb.result:
Updated result
mysql-test/r/concurrent_innodb.result:
Updated result
mysql-test/r/deadlock_innodb.result:
Updated result
mysql-test/r/handler_innodb.result:
Updated result
mysql-test/r/handler_myisam.result:
Updated result
mysql-test/r/index_merge_myisam.result:
Updated result
mysql-test/r/innodb_mysql.result:
Updated result
mysql-test/r/mix2_myisam.result:
Updated result
mysql-test/r/rowid_order_innodb.result:
Updated result
mysql-test/r/unsafe_binlog_innodb.result:
Updated result
mysql-test/t/cache_innodb.test:
1. Renaming of t/innodb_cache.test to t/cache_innodb.test
2. Main code is now sourced from include/query_cache.inc.
mysql-test/t/concurrent_innodb.test:
1. Renaming of t/innodb_concurrent.test to t/concurrent_innodb.test
2. Main code is now sourced from include/concurrent.inc.
Attention: This test fails even in the old version. (BUG#21579).
--> added to t/disabled.def
mysql-test/t/deadlock_innodb.test:
1. Renaming of t/innodb_deadlock.test to t/deadlock_innodb.test
2. Main code is now sourced from include/deadlock.inc.
mysql-test/t/disabled.def:
Add the test concurrent_innodb because of
BUG#21579 2006-08-11 mleich innodb_concurrent random failures with varying differences
mysql-test/t/handler_innodb.test:
1. Renaming of t/innodb_handler.test to t/handler_innodb.test
2. Main code is now sourced from include/handler.inc.
include/handler.inc = united code of former t/handler.test and t/innodb_handler.test
mysql-test/t/handler_myisam.test:
1. Renaming of t/handler.test to t/handler_myisam.test
2. Main code is now sourced from include/handler.inc.
include/handler.inc = united code of former t/handler.test and t/handler_innodb.test.
mysql-test/t/innodb_mysql.test:
1. Main code is now sourced from include/mix1.inc.
2. Test was not renamed because t/innodb.test refers to it.
mysql-test/t/mix2_myisam.test:
New test: MyISAM variant of mix2 ( = t/innodb.test)
mysql-test/t/read_many_rows_innodb.test:
1. Renaming of t/innodb_big.test to t/read_many_rows_innodb.test
2. Main code is now sourced from include/read_many_rows.inc.
mysql-test/t/rowid_order_innodb.test:
Main code is now sourced from t/rowid_order.inc.
mysql-test/t/unsafe_binlog_innodb.test:
1. Renaming of t/innodb_unsafe_binlog.test to t/unsafe_binlog_innodb.test
2. Main code is now sourced from include/unsafe_binlog.inc.
