--source include/have_debug.inc --source include/have_debug_sync.inc create or replace table t1 (a int primary key, b int, c int, key(b),key(c)) engine=myisam; insert into t1 (a) values(1); set debug_sync='RESET'; connect (con1, localhost, root,,); connect (con2, localhost, root,,); connection default; backup stage start; backup stage flush; select * from t1; set debug_sync='after_purge_tables SIGNAL parked WAIT_FOR go'; set debug_sync='before_tc_release_table SIGNAL parked2 WAIT_FOR go2'; --send backup stage BLOCK_DDL --connection con1 set debug_sync='now WAIT_FOR parked'; select * from t1; set debug_sync='now SIGNAL go'; set debug_sync='now WAIT_FOR parked2'; set debug_sync='before_wait_for_refs SIGNAL waiting WAIT_FOR go3'; --send drop table t1; --connection con2 set debug_sync='now WAIT_FOR waiting'; set debug_sync='now SIGNAL go2'; set debug_sync='now SIGNAL go3'; --connection default --reap --connection con1 --reap connection default; disconnect con1; disconnect con2; set debug_sync='RESET';