row_search_for_mysql(): Never try semi-consistent read in unique searches.

They are only useful in table scans. (Bug #52663)

3 files changed, 61 insertions, 0 deletions

diff --git a/mysql-test/suite/innodb/r/innodb_bug52663.result b/mysql-test/suite/innodb/r/innodb_bug52663.result
new file mode 100644
index 00000000000..89add18617b
--- /dev/null
+++ b/mysql-test/suite/innodb/r/innodb_bug52663.result
@@ -0,0 +1,26 @@
+set session transaction isolation level read committed;
+create table innodb_bug52663 (what varchar(5), id integer, count integer, primary key
+(what, id)) engine=innodb;
+insert into innodb_bug52663 values ('total', 0, 0);
+begin;
+set session transaction isolation level read committed;
+begin;
+update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0;
+select * from innodb_bug52663;
+what	id	count
+total	0	1
+update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0;
+ERROR HY000: Lock wait timeout exceeded; try restarting transaction
+select * from innodb_bug52663;
+what	id	count
+total	0	0
+commit;
+update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0;
+commit;
+select * from innodb_bug52663;
+what	id	count
+total	0	2
+select * from innodb_bug52663;
+what	id	count
+total	0	2
+drop table innodb_bug52663;
diff --git a/mysql-test/suite/innodb/t/innodb_bug52663-master.opt b/mysql-test/suite/innodb/t/innodb_bug52663-master.opt
new file mode 100644
index 00000000000..462f8fbe828
--- /dev/null
+++ b/mysql-test/suite/innodb/t/innodb_bug52663-master.opt
@@ -0,0 +1 @@
+--innodb_lock_wait_timeout=1
diff --git a/mysql-test/suite/innodb/t/innodb_bug52663.test b/mysql-test/suite/innodb/t/innodb_bug52663.test
new file mode 100644
index 00000000000..fcf97531e00
--- /dev/null
+++ b/mysql-test/suite/innodb/t/innodb_bug52663.test
@@ -0,0 +1,34 @@
+--source include/have_innodb.inc
+
+set session transaction isolation level read committed;
+
+create table innodb_bug52663 (what varchar(5), id integer, count integer, primary key
+(what, id)) engine=innodb;
+insert into innodb_bug52663 values ('total', 0, 0);
+begin;
+
+connect (addconroot, localhost, root,,);
+connection addconroot;
+set session transaction isolation level read committed;
+begin;
+
+connection default;
+update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0;
+select * from innodb_bug52663;
+
+connection addconroot;
+--error ER_LOCK_WAIT_TIMEOUT
+update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0;
+select * from innodb_bug52663;
+
+connection default;
+commit;
+
+connection addconroot;
+update innodb_bug52663 set count = count + 1 where what = 'total' and id = 0;
+commit;
+select * from innodb_bug52663;
+
+connection default;
+select * from innodb_bug52663;
+drop table innodb_bug52663;