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and invalidation in the most general case (non-temporary table and not simple RENAME or ENABLE/DISABLE KEYS or partitioning command). See comment for sql/sql_table.cc for more information. These changes are prerequisite for 5.1 version of fix for bug #23667 "CREATE TABLE LIKE is not isolated from alteration by other connections"
117 lines
3.6 KiB
Plaintext
117 lines
3.6 KiB
Plaintext
#
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# Tests for various concurrency-related aspects of ALTER TABLE implemetation
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#
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# This test takes rather long time so let us run it only in --big-test mode
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--source include/big_test.inc
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# We are using some debug-only features in this test
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--source include/have_debug.inc
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# Also we are using SBR to check that statements are executed
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# in proper order.
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--source include/have_binlog_format_mixed_or_statement.inc
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#
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# Test for bug #25044 "ALTER TABLE ... ENABLE KEYS acquires global
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# 'opening tables' lock".
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#
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# ALTER TABLE ... ENABLE KEYS should not acquire LOCK_open mutex for
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# the whole its duration as it prevents other queries from execution.
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--disable_warnings
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drop table if exists t1, t2;
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--enable_warnings
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connect (addconroot, localhost, root,,);
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connection default;
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create table t1 (n1 int, n2 int, n3 int,
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key (n1, n2, n3),
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key (n2, n3, n1),
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key (n3, n1, n2));
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create table t2 (i int);
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# Starting from 5.1 we have runtime settable @@debug variable,
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# which can be used for introducing delays at certain points of
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# statement execution, so we don't need many rows in 't1' to make
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# this test repeatable.
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alter table t1 disable keys;
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insert into t1 values (RAND()*1000, RAND()*1000, RAND()*1000);
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# Later we use binlog to check the order in which statements are
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# executed so let us reset it first.
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reset master;
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set session debug="+d,sleep_alter_enable_indexes";
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--send alter table t1 enable keys;
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connection addconroot;
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--sleep 2
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# This statement should not be blocked by in-flight ALTER and therefore
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# should be executed and written to binlog before ALTER TABLE ... ENABLE KEYS
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# finishes.
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insert into t2 values (1);
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# And this should wait until the end of ALTER TABLE ... ENABLE KEYS.
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insert into t1 values (1, 1, 1);
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connection default;
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--reap
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set session debug="-d,sleep_alter_enable_indexes";
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# Check that statements were executed/binlogged in correct order.
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--replace_column 2 # 5 #
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show binlog events in 'master-bin.000001' from 106;
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# Clean up
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drop tables t1, t2;
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--echo End of 5.0 tests
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#
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# Additional coverage for the main ALTER TABLE case
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#
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# We should be sure that table being altered is properly
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# locked during statement execution and in particular that
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# no DDL or DML statement can sneak in and get access to
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# the table when real operation has already taken place
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# but this fact has not been noted in binary log yet.
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--disable_warnings
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drop table if exists t1, t2, t3;
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--enable_warnings
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create table t1 (i int);
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# We are going to check that statements are logged in correct order
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reset master;
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set session debug="+d,sleep_alter_before_main_binlog";
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--send alter table t1 change i c char(10) default 'Test1';
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connection addconroot;
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--sleep 2
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insert into t1 values ();
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select * from t1;
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connection default;
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--reap
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--send alter table t1 change c vc varchar(100) default 'Test2';
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connection addconroot;
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--sleep 2
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rename table t1 to t2;
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connection default;
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--reap
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drop table t2;
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# And now tests for ALTER TABLE with RENAME clause. In this
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# case target table name should be properly locked as well.
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create table t1 (i int);
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--send alter table t1 change i c char(10) default 'Test3', rename to t2;
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connection addconroot;
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--sleep 2
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insert into t2 values ();
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select * from t2;
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connection default;
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--reap
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--send alter table t2 change c vc varchar(100) default 'Test2', rename to t1;
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connection addconroot;
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--sleep 2
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rename table t1 to t3;
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connection default;
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--reap
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drop table t3;
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set session debug="-d,sleep_alter_before_main_binlog";
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# Check that all statements were logged in correct order
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--replace_column 2 # 5 #
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show binlog events in 'master-bin.000001' from 106;
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--echo End of 5.1 tests
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