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Current File : //usr/opt/mysql57/mysql-test/t/truncate_coverage.test

# The include statement below is a temp one for tests that are yet to
#be ported to run with InnoDB,
#but needs to be kept for tests that would need MyISAM in future.
--source include/force_myisam_default.inc

#
# Code coverage testing of TRUNCATE TABLE.
#
# Ingo Struewing, 2009-07-20
#

--source include/have_debug_sync.inc
SET DEBUG_SYNC='RESET';

--let $MYSQLD_DATADIR= `SELECT @@datadir`

--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings

--echo #
--echo # Bug#20667 - Truncate table fails for a write locked table
--echo #
########
# Attack wait_while_table_is_used(). Kill query while trying to
# upgrade MDL.
#
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
#
# Acquire a shared metadata lock on table by opening HANDLER for it and wait.
# TRUNCATE shall block on this metadata lock.
# We can't use normal DML as such statements would also block LOCK TABLES.
#
--echo #
--echo # connection con1
--connect (con1, localhost, root,,)
HANDLER t1 OPEN;
#
# Get connection id of default connection.
# Lock the table and start TRUNCATE, which will block on MDL upgrade.
#
--echo #
--echo # connection default
--connection default
let $ID= `SELECT @id := CONNECTION_ID()`;
LOCK TABLE t1 WRITE;
SET DEBUG_SYNC='mdl_upgrade_lock SIGNAL waiting';
send TRUNCATE TABLE t1;
#
# Get the default connection ID into a variable in an invisible statement.
# Kill the TRUNCATE query. This shall result in an error return
# from wait_while_table_is_used().
#
--echo #
--echo # connection con2
--connect (con2, localhost, root,,)
SET DEBUG_SYNC='now WAIT_FOR waiting';
let $invisible_assignment_in_select = `SELECT @id := $ID`;
KILL QUERY @id;
--disconnect con2
--echo #
--echo # connection default
--connection default
--error ER_QUERY_INTERRUPTED
reap;
UNLOCK TABLES;
--echo #
--echo # connection con1
--connection con1
--echo # Release shared metadata lock by closing HANDLER.
HANDLER t1 CLOSE;
--disconnect con1
--echo #
--echo # connection default
--connection default
DROP TABLE t1;
SET DEBUG_SYNC='RESET';
########
# Attack reopen_tables(). Remove form file.
#
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
#
# Acquire a shared metadata lock on table by opening HANDLER for it and wait.
# TRUNCATE shall block on this metadata lock.
# We can't use normal DML as such statements would also block LOCK TABLES.
#
--echo #
--echo # connection con1
--connect (con1, localhost, root,,)
HANDLER t1 OPEN;
#
# Lock the table and start TRUNCATE, which will block on MDL upgrade.
#
--echo #
--echo # connection default
--connection default
LOCK TABLE t1 WRITE;
SET DEBUG_SYNC='mdl_upgrade_lock SIGNAL waiting';
send TRUNCATE TABLE t1;
#
# Remove datafile.
# Commit to let TRUNCATE continue.
#
--echo #
--echo # connection con2
--connect (con2, localhost, root,,)
SET DEBUG_SYNC='now WAIT_FOR waiting';
--remove_file $MYSQLD_DATADIR/test/t1.frm
--disconnect con2
--echo #
--echo # connection con1
--connection con1
HANDLER t1 CLOSE;
--disconnect con1
--echo #
--echo # connection default
--connection default
--error ER_NO_SUCH_TABLE
reap;
UNLOCK TABLES;
--error ER_BAD_TABLE_ERROR
DROP TABLE t1;
SET DEBUG_SYNC='RESET';
########
# Attack acquire_exclusive_locks(). Hold a global read lock.
# Non-LOCK TABLE case.
#
CREATE TABLE t1 (c1 INT);
INSERT INTO t1 VALUES (1);
#
# Start a transaction and execute a DML in it. Since 5.4.4 this leaves
# a shared meta data lock (MDL) behind. TRUNCATE shall block on it.
#
--echo #
--echo # connection con1
--connect (con1, localhost, root,,)
START TRANSACTION;
INSERT INTO t1 VALUES (2);
#
# Get connection id of default connection.
# Start TRUNCATE, which will block on acquire_exclusive_locks().
#
--echo #
--echo # connection default
--connection default
let $ID= `SELECT @id := CONNECTION_ID()`;
SET DEBUG_SYNC='mdl_acquire_lock_wait SIGNAL waiting';
send TRUNCATE TABLE t1;
#
# Get the default connection ID into a variable in an invisible statement.
# Kill the TRUNCATE query. This shall result in an error return
# from wait_while_table_is_used().
#
--echo #
--echo # connection con1
--connection con1
SET DEBUG_SYNC='now WAIT_FOR waiting';
let $invisible_assignment_in_select = `SELECT @id := $ID`;
KILL QUERY @id;
--echo #
--echo # connection default
--connection default
--error ER_QUERY_INTERRUPTED
reap;
--echo #
--echo # connection con1
--connection con1
--echo # Release SW lock by committing transaction.
COMMIT;
--disconnect con1
--echo #
--echo # connection default
--connection default
UNLOCK TABLES;
DROP TABLE t1;
SET DEBUG_SYNC='RESET';

--echo #
--echo # Bug#57659 Segfault in Query_cache::invalidate_data for TRUNCATE TABLE
--echo #

--echo # Note that this test case only reproduces the problem
--echo # when it is run with valgrind.

--disable_warnings
DROP TABLE IF EXISTS t1, m1;
--enable_warnings

CREATE TABLE t1(a INT) engine=memory;
CREATE TABLE m1(a INT) engine=merge UNION(t1);
connect(con2, localhost, root);

--echo # Connection con1
connect(con1, localhost, root);
SET DEBUG_SYNC= 'open_tables_after_open_and_process_table SIGNAL opened WAIT_FOR dropped';
--echo # Sending:
--send TRUNCATE TABLE m1

--echo # Connection con2
connection con2;
SET DEBUG_SYNC= 'now WAIT_FOR opened';
--echo # Sending:
--send FLUSH TABLES

--echo # Connection default
connection default;
--echo # Waiting for FLUSH TABLES to be blocked.
let $wait_condition= SELECT COUNT(*)=1 FROM information_schema.processlist
  WHERE state= 'Waiting for table flush' AND info= 'FLUSH TABLES';
--source include/wait_condition.inc
SET DEBUG_SYNC= 'now SIGNAL dropped';

--echo # Connection con1
connection con1;
--echo # Reaping: TRUNCATE TABLE m1
--error ER_WRONG_MRG_TABLE
--reap
disconnect con1;
--source include/wait_until_disconnected.inc

--echo # Connection con2
connection con2;
--echo # Reaping: FLUSH TABLES
--reap
disconnect con2;
--source include/wait_until_disconnected.inc

--echo # Connection default
connection default;
SET DEBUG_SYNC= 'RESET';
DROP TABLE m1, t1;

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