mariadb/mysql-test/t/partition_sync.test

--source include/have_partition.inc
# Save the initial number of concurrent sessions.
--source include/count_sessions.inc

--echo #
--echo # Bug #43867 ALTER TABLE on a partitioned table 
--echo #            causes unnecessary deadlocks
--echo #

CREATE TABLE t1 (a int) PARTITION BY RANGE (a)
(PARTITION p0 VALUES LESS THAN (1),
 PARTITION p1 VALUES LESS THAN (2));

INSERT INTO t1 VALUES (0),(1);

connect(con1,localhost,root);

--echo # Connection 2
connection con1;
BEGIN;
SELECT * FROM t1;

--echo # Connection 1
connection default;
--error ER_DROP_PARTITION_NON_EXISTENT
ALTER TABLE t1 DROP PARTITION p3;

--echo # Connection 2
connection con1;
--echo # This failed with deadlock and should not do so.
SELECT * FROM t1;

--echo # Connection 1
connection default;
disconnect con1;
DROP TABLE t1;


# Check that all connections opened by test cases in this file are really
# gone so execution of other tests won't be affected by their presence.
--source include/wait_until_count_sessions.inc