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SET DEBUG_SYNC='RESET'; DROP TABLE IF EXISTS t1; # # Bug#20667 - Truncate table fails for a write locked table # CREATE TABLE t1 (c1 INT); INSERT INTO t1 VALUES (1); # # connection con1 HANDLER t1 OPEN; # # connection default LOCK TABLE t1 WRITE; SET DEBUG_SYNC='mdl_upgrade_lock SIGNAL waiting'; TRUNCATE TABLE t1; # # connection con2 SET DEBUG_SYNC='now WAIT_FOR waiting'; KILL QUERY @id; # # connection default ERROR 70100: Query execution was interrupted UNLOCK TABLES; # # connection con1 # Release shared metadata lock by closing HANDLER. HANDLER t1 CLOSE; # # connection default DROP TABLE t1; SET DEBUG_SYNC='RESET'; CREATE TABLE t1 (c1 INT); INSERT INTO t1 VALUES (1); # # connection con1 HANDLER t1 OPEN; # # connection default LOCK TABLE t1 WRITE; SET DEBUG_SYNC='mdl_upgrade_lock SIGNAL waiting'; TRUNCATE TABLE t1; # # connection con2 SET DEBUG_SYNC='now WAIT_FOR waiting'; # # connection con1 HANDLER t1 CLOSE; # # connection default ERROR 42S02: Table 'test.t1' doesn't exist UNLOCK TABLES; DROP TABLE t1; ERROR 42S02: Unknown table 'test.t1' SET DEBUG_SYNC='RESET'; CREATE TABLE t1 (c1 INT); INSERT INTO t1 VALUES (1); # # connection con1 START TRANSACTION; INSERT INTO t1 VALUES (2); # # connection default SET DEBUG_SYNC='mdl_acquire_lock_wait SIGNAL waiting'; TRUNCATE TABLE t1; # # connection con1 SET DEBUG_SYNC='now WAIT_FOR waiting'; KILL QUERY @id; # # connection default ERROR 70100: Query execution was interrupted # # connection con1 # Release SW lock by committing transaction. COMMIT; # # connection default UNLOCK TABLES; DROP TABLE t1; SET DEBUG_SYNC='RESET'; # # Bug#57659 Segfault in Query_cache::invalidate_data for TRUNCATE TABLE # # Note that this test case only reproduces the problem # when it is run with valgrind. DROP TABLE IF EXISTS t1, m1; CREATE TABLE t1(a INT) engine=memory; CREATE TABLE m1(a INT) engine=merge UNION(t1); # Connection con1 SET DEBUG_SYNC= 'open_tables_after_open_and_process_table SIGNAL opened WAIT_FOR dropped'; # Sending: TRUNCATE TABLE m1; # Connection con2 SET DEBUG_SYNC= 'now WAIT_FOR opened'; # Sending: FLUSH TABLES; # Connection default # Waiting for FLUSH TABLES to be blocked. SET DEBUG_SYNC= 'now SIGNAL dropped'; # Connection con1 # Reaping: TRUNCATE TABLE m1 ERROR HY000: Unable to open underlying table which is differently defined or of non-MyISAM type or doesn't exist # Connection con2 # Reaping: FLUSH TABLES # Connection default SET DEBUG_SYNC= 'RESET'; DROP TABLE m1, t1;