Merge branch '10.1' into 10.2

1 files changed, 87 insertions, 0 deletions

diff --git a/mysql-test/suite/innodb/t/foreign-keys.test b/mysql-test/suite/innodb/t/foreign-keys.test
index e77e1e761c7..35da5a5d075 100644
--- a/mysql-test/suite/innodb/t/foreign-keys.test
+++ b/mysql-test/suite/innodb/t/foreign-keys.test
@@ -1,5 +1,8 @@
 --source include/have_innodb.inc
 --source include/have_debug.inc
+--source include/have_debug_sync.inc
+
+--enable_connect_log
 
 --echo #
 --echo # Bug #19471516 SERVER CRASHES WHEN EXECUTING ALTER TABLE
@@ -70,3 +73,87 @@ connection default;
 select * from t2;
 drop table t2, t1;
 drop user foo;
+
+#
+# MDEV-16465 Invalid (old?) table or database name or hang in ha_innobase::delete_table and log semaphore wait upon concurrent DDL with foreign keys
+#
+create table t1 (f1 int primary key) engine=innodb;
+create table t2 (f2 int primary key) engine=innodb;
+create table t3 (f3 int primary key, foreign key (f3) references t2(f2)) engine=innodb;
+insert into t1 values (1),(2),(3),(4),(5);
+insert into t2 values (1),(2),(3),(4),(5);
+insert into t3 values (1),(2),(3),(4),(5);
+connect con1,localhost,root;
+set debug_sync='alter_table_before_rename_result_table signal g1 wait_for g2';
+send alter table t2 add constraint foreign key (f2) references t1(f1) on delete cascade on update cascade;
+connection default;
+let $conn=`select connection_id()`;
+set debug_sync='before_execute_sql_command wait_for g1';
+send update t1 set f1 = f1 + 100000 limit 2;
+connect con2,localhost,root;
+let $wait_condition= select 1 from information_schema.processlist where state='Waiting for table metadata lock' and info like 'update t1 %';
+source include/wait_condition.inc;
+--replace_result $conn UPDATE
+eval kill query $conn;
+disconnect con2;
+connection default;
+error ER_QUERY_INTERRUPTED;
+reap;
+set debug_sync='now signal g2';
+connection con1;
+reap;
+show create table t2;
+disconnect con1;
+connection default;
+select * from t2 where f2 not in (select f1 from t1);
+select * from t3 where f3 not in (select f2 from t2);
+drop table t3;
+drop table t2;
+drop table t1;
+set debug_sync='reset';
+
+#
+# FK and prelocking:
+# child table accesses (reads and writes) wait for locks.
+#
+create table t1 (a int primary key, b int) engine=innodb;
+create table t2 (c int primary key, d int,
+  foreign key (d) references t1 (a) on update cascade) engine=innodb;
+insert t1 values (1,1),(2,2),(3,3);
+insert t2 values (4,1),(5,2),(6,3);
+flush table t2 with read lock; # this takes MDL_SHARED_NO_WRITE
+connect (con1,localhost,root);
+--error ER_ROW_IS_REFERENCED_2
+delete from t1 where a=2;
+send update t1 set a=10 where a=1;
+connection default;
+let $wait_condition= select 1 from information_schema.processlist where state='Waiting for table metadata lock';
+source include/wait_condition.inc;
+unlock tables;
+connection con1;
+reap;
+connection default;
+lock table t2 write; # this takes MDL_SHARED_NO_READ_WRITE
+connection con1;
+send delete from t1 where a=2;
+connection default;
+let $wait_condition= select 1 from information_schema.processlist where state='Waiting for table metadata lock';
+source include/wait_condition.inc;
+unlock tables;
+connection con1;
+--error ER_ROW_IS_REFERENCED_2
+reap;
+connection default;
+unlock tables;
+disconnect con1;
+
+# but privileges should not be checked
+create user foo;
+grant select,update on test.t1 to foo;
+connect(foo,localhost,foo);
+update t1 set a=30 where a=3;
+disconnect foo;
+connection default;
+select * from t2;
+drop table t2, t1;
+drop user foo;