初版

build/lib/mysql/mysql-test/t/alter_table-big.test

@@ -0,0 +1,119 @@
+#
+# Tests for various concurrency-related aspects of ALTER TABLE implemetation
+#
+# This test takes rather long time so let us run it only in --big-test mode
+--source include/big_test.inc
+# We are using some debug-only features in this test
+--source include/have_debug.inc
+# Also we are using SBR to check that statements are executed
+# in proper order.
+--source include/have_binlog_format_mixed_or_statement.inc
+
+#
+# Test for Bug#25044 ALTER TABLE ... ENABLE KEYS acquires global
+#                    'opening tables' lock
+#
+# ALTER TABLE ... ENABLE KEYS should not acquire LOCK_open mutex for
+# the whole its duration as it prevents other queries from execution.
+--disable_warnings
+drop table if exists t1, t2;
+--enable_warnings
+connect (addconroot, localhost, root,,);
+connection default;
+create table t1 (n1 int, n2 int, n3 int,
+                key (n1, n2, n3),
+                key (n2, n3, n1),
+                key (n3, n1, n2));
+create table t2 (i int);
+
+# Starting from 5.1 we have runtime settable @@debug variable,
+# which can be used for introducing delays at certain points of
+# statement execution, so we don't need many rows in 't1' to make
+# this test repeatable.
+alter table t1 disable keys;
+--disable_warnings
+insert into t1 values (RAND()*1000, RAND()*1000, RAND()*1000);
+--enable_warnings
+
+# Later we use binlog to check the order in which statements are
+# executed so let us reset it first.
+reset master;
+set session debug="+d,sleep_alter_enable_indexes";
+--send alter table t1 enable keys;
+connection addconroot;
+--sleep 2
+# This statement should not be blocked by in-flight ALTER and therefore
+# should be executed and written to binlog before ALTER TABLE ... ENABLE KEYS
+# finishes.
+insert into t2 values (1);
+# And this should wait until the end of ALTER TABLE ... ENABLE KEYS.
+insert into t1 values (1, 1, 1);
+connection default;
+--reap
+set session debug="-d,sleep_alter_enable_indexes";
+# Check that statements were executed/binlogged in correct order.
+source include/show_binlog_events.inc;
+
+# Clean up
+drop tables t1, t2;
+disconnect addconroot;
+
+
+--echo End of 5.0 tests
+
+#
+# Additional coverage for the main ALTER TABLE case
+#
+# We should be sure that table being altered is properly
+# locked during statement execution and in particular that
+# no DDL or DML statement can sneak in and get access to
+# the table when real operation has already taken place
+# but this fact has not been noted in binary log yet.
+--disable_warnings
+drop table if exists t1, t2, t3;
+--enable_warnings
+create table t1 (i int);
+# We are going to check that statements are logged in correct order
+reset master;
+set session debug="+d,sleep_alter_before_main_binlog";
+--send alter table t1 change i c char(10) default 'Test1';
+connect (addconroot, localhost, root,,);
+connection addconroot;
+--sleep 2
+insert into t1 values ();
+select * from t1;
+connection default;
+--reap
+--send alter table t1 change c vc varchar(100) default 'Test2';
+connection addconroot;
+--sleep 2
+rename table t1 to t2;
+connection default;
+--reap
+drop table t2;
+# And now tests for ALTER TABLE with RENAME clause. In this
+# case target table name should be properly locked as well.
+create table t1 (i int);
+--send alter table t1 change i c char(10) default 'Test3', rename to t2;
+connection addconroot;
+--sleep 2
+insert into t2 values ();
+select * from t2;
+connection default;
+--reap
+--send alter table t2 change c vc varchar(100) default 'Test2', rename to t1;
+connection addconroot;
+--sleep 2
+rename table t1 to t3;
+connection default;
+--reap
+disconnect addconroot;
+drop table t3;
+set session debug="-d,sleep_alter_before_main_binlog";
+
+# Check that all statements were logged in correct order
+source include/show_binlog_events.inc;
+
+
+--echo End of 5.1 tests
+