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------------------------------------------------------------ 2599.161.3 Ingo Struewing 2009-07-21 Bug#20667 - Truncate table fails for a write locked table TRUNCATE TABLE was not allowed under LOCK TABLES. The patch removes this restriction. mysql_truncate() does now handle that case.
155 lines
3.7 KiB
Text
155 lines
3.7 KiB
Text
#
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# Code coverage testing of TRUNCATE TABLE.
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#
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# Ingo Struewing, 2009-07-20
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#
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--source include/have_debug_sync.inc
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SET DEBUG_SYNC='RESET';
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--let $MYSQLD_DATADIR= `SELECT @@datadir`
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--disable_warnings
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DROP TABLE IF EXISTS t1;
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--enable_warnings
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--echo #
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--echo # Bug#20667 - Truncate table fails for a write locked table
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--echo #
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########
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# Attack wait_while_table_is_used(). Kill query while trying to
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# upgrade MDL.
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#
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CREATE TABLE t1 (c1 INT);
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INSERT INTO t1 VALUES (1);
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#
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# Start a transaction and execute a DML in it. Since 5.4.4 this leaves
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# a shared meta data lock (MDL) behind. TRUNCATE shall block on it.
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#
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--echo #
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--echo # connection con1
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--connect (con1, localhost, root,,)
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START TRANSACTION;
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INSERT INTO t1 VALUES (2);
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#
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# Get connection id of default connection.
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# Lock the table and start TRUNCATE, which will block on MDL upgrade.
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#
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--echo #
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--echo # connection default
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--connection default
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let $ID= `SELECT @id := CONNECTION_ID()`;
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LOCK TABLE t1 WRITE;
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SET DEBUG_SYNC='mdl_upgrade_shared_lock_to_exclusive SIGNAL waiting';
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send TRUNCATE TABLE t1;
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#
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# Get the default connection ID into a variable in an invisible statement.
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# Kill the TRUNCATE query. This shall result in an error return
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# from wait_while_table_is_used().
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#
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--echo #
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--echo # connection con1
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--connection con1
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SET DEBUG_SYNC='now WAIT_FOR waiting';
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let $invisible_assignment_in_select = `SELECT @id := $ID`;
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KILL QUERY @id;
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COMMIT;
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--disconnect con1
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--echo #
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--echo # connection default
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--connection default
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--error ER_QUERY_INTERRUPTED
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reap;
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UNLOCK TABLES;
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DROP TABLE t1;
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SET DEBUG_SYNC='RESET';
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########
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# Attack reopen_tables(). Remove form file.
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#
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CREATE TABLE t1 (c1 INT);
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INSERT INTO t1 VALUES (1);
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#
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# Start a transaction and execute a DML in it. Since 5.4.4 this leaves
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# a shared meta data lock (MDL) behind. TRUNCATE shall block on it.
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#
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--echo #
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--echo # connection con1
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--connect (con1, localhost, root,,)
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START TRANSACTION;
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INSERT INTO t1 VALUES (2);
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#
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# Lock the table and start TRUNCATE, which will block on MDL upgrade.
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#
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--echo #
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--echo # connection default
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--connection default
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LOCK TABLE t1 WRITE;
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SET DEBUG_SYNC='mdl_upgrade_shared_lock_to_exclusive SIGNAL waiting';
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send TRUNCATE TABLE t1;
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#
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# Remove datafile.
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# Commit to let TRUNCATE continue.
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#
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--echo #
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--echo # connection con1
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--connection con1
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SET DEBUG_SYNC='now WAIT_FOR waiting';
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--remove_file $MYSQLD_DATADIR/test/t1.frm
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COMMIT;
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--disconnect con1
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--echo #
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--echo # connection default
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--connection default
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--error ER_NO_SUCH_TABLE
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reap;
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UNLOCK TABLES;
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--error ER_BAD_TABLE_ERROR
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DROP TABLE t1;
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SET DEBUG_SYNC='RESET';
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########
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# Attack acquire_exclusive_locks(). Hold a global read lock.
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# Non-LOCK TABLE case.
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#
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CREATE TABLE t1 (c1 INT);
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INSERT INTO t1 VALUES (1);
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#
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# Start a transaction and execute a DML in it. Since 5.4.4 this leaves
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# a shared meta data lock (MDL) behind. TRUNCATE shall block on it.
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#
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--echo #
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--echo # connection con1
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--connect (con1, localhost, root,,)
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START TRANSACTION;
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INSERT INTO t1 VALUES (2);
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#
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# Get connection id of default connection.
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# Start TRUNCATE, which will block on acquire_exclusive_locks().
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#
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--echo #
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--echo # connection default
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--connection default
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let $ID= `SELECT @id := CONNECTION_ID()`;
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SET DEBUG_SYNC='mdl_acquire_exclusive_locks_wait SIGNAL waiting';
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send TRUNCATE TABLE t1;
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#
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# Get the default connection ID into a variable in an invisible statement.
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# Kill the TRUNCATE query. This shall result in an error return
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# from wait_while_table_is_used().
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#
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--echo #
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--echo # connection con1
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--connection con1
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SET DEBUG_SYNC='now WAIT_FOR waiting';
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let $invisible_assignment_in_select = `SELECT @id := $ID`;
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KILL QUERY @id;
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COMMIT;
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--disconnect con1
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--echo #
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--echo # connection default
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--connection default
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--error ER_QUERY_INTERRUPTED
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reap;
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UNLOCK TABLES;
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DROP TABLE t1;
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SET DEBUG_SYNC='RESET';
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