CREATE TABLE t1(a VARCHAR(5),FULLTEXT KEY(a)) ENGINE=InnoDB;
SET DEBUG_SYNC = 'get_next_FTS_DOC_ID SIGNAL prepared WAIT_FOR race';
REPLACE INTO t1(a) values('aaa');
connect dml, localhost, root, ,;
SET DEBUG_SYNC = 'now WAIT_FOR prepared';
REPLACE INTO t1(a) VALUES('aaa');
SET DEBUG_SYNC = 'now SIGNAL race';
disconnect dml;
connection default;
SET DEBUG_SYNC = 'RESET';
DROP TABLE t1;
#
# MDEV-19529 InnoDB hang on DROP FULLTEXT INDEX
#
CREATE TABLE t1(f1 CHAR(100), FULLTEXT(f1))ENGINE=InnoDB;
INSERT INTO t1 VALUES('test');
CREATE TABLE t2 (f1 char(100), FULLTEXT idx1(f1))ENGINE=InnoDB;
INSERT INTO t2 VALUES('mariadb');
connection default;
SET @saved_dbug = @@GLOBAL.debug_dbug;
SET GLOBAL debug_dbug ='+d,fts_instrument_sync_request,ib_optimize_wq_hang';
SET DEBUG_SYNC= 'fts_instrument_sync_request
		 SIGNAL drop_index_start WAIT_FOR sync_op';
INSERT INTO t1 VALUES('Keyword');
connect con1,localhost,root,,,;
SET DEBUG_SYNC='now WAIT_FOR drop_index_start';
SET DEBUG_SYNC= 'norebuild_fts_drop SIGNAL sync_op WAIT_FOR fts_drop_index';
ALTER TABLE t2 drop index idx1;
connection default;
set DEBUG_SYNC= 'now SIGNAL fts_drop_index';
connection con1;
drop table t1, t2;
connection default;
set DEBUG_SYNC=RESET;
SET @@GLOBAL.debug_dbug = @saved_dbug;