diff --git a/mysql-test/r/ndb_single_user.result b/mysql-test/r/ndb_single_user.result
index 771a02ecc84..907cb17fecf 100644
--- a/mysql-test/r/ndb_single_user.result
+++ b/mysql-test/r/ndb_single_user.result
@@ -1,7 +1,7 @@
 use test;
 drop table if exists t1,t2,t3,t4,t5,t6,t7,t8,t9,t10;
 create table t1 (a int key, b int unique, c int) engine ndb;
-ERROR HY000: Can't create table 'test.t1' (errno: 4007)
+ERROR HY000: Can't create table './test/t1.frm' (errno: 299)
 create table t1 (a int key, b int unique, c int) engine ndb;
 insert into t1 values (1,1,0),(2,2,0),(3,3,0),(4,4,0),(5,5,0),(6,6,0),(7,7,0),(8,8,0),(9,9,0),(10,10,0);
 create table t2 as select * from t1;
@@ -28,19 +28,29 @@ insert into t1 select * from t2;
 drop table t1;
 ERROR 42S02: Unknown table 't1'
 create index new_index on t1 (c);
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 insert into t1 values (1,1,0),(2,2,0),(3,3,0),(4,4,0),(5,5,0),(6,6,0),(7,7,0),(8,8,0),(9,9,0),(10,10,0);
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 select * from t1 where a = 1;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 select * from t1 where b = 4;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 update t1 set b=102 where a = 2;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 update t1 set b=103 where b = 3;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 update t1 set b=b+100;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
 update t1 set b=b+100 where a > 7;
-ERROR 42S02: Table 'test.t1' doesn't exist
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
+BEGIN;
+update t1 set b=b+100 where a=1;
+BEGIN;
+update t1 set b=b+100 where a=2;
+update t1 set b=b+100 where a=3;
+COMMIT;
+update t1 set b=b+100 where a=4;
+ERROR HY000: Got error 299 'Operation not allowed or aborted due to single user mode' from ndbcluster
+COMMIT;
+ERROR HY000: Got error 4350 'Transaction already aborted' from ndbcluster
 drop table t1;
diff --git a/mysql-test/t/disabled.def b/mysql-test/t/disabled.def
index be3e80dd969..60a28516195 100644
--- a/mysql-test/t/disabled.def
+++ b/mysql-test/t/disabled.def
@@ -35,4 +35,3 @@ synchronization          : Bug#24529  	Test 'synchronization' fails on Mac pushb
 
 plugin                   : Bug#25659 memory leak via "plugins" test
 rpl_ndb_dd_advance	 : Bug#25913 rpl_ndb_dd_advance fails randomly
-ndb_single_user          : Bug#27021 Error codes in mysqld in single user mode varies
diff --git a/mysql-test/t/ndb_single_user.test b/mysql-test/t/ndb_single_user.test
index c655124f79f..b191e573996 100644
--- a/mysql-test/t/ndb_single_user.test
+++ b/mysql-test/t/ndb_single_user.test
@@ -51,34 +51,55 @@ insert into t1 select * from t2;
 --connection server2
 --error 1051
 drop table t1;
---error 1146
-#--error 1296
+--error 1296
 create index new_index on t1 (c);
---error 1146
-#--error 1296
+--error 1296
 insert into t1 values (1,1,0),(2,2,0),(3,3,0),(4,4,0),(5,5,0),(6,6,0),(7,7,0),(8,8,0),(9,9,0),(10,10,0);
---error 1146
-#--error 1296
+--error 1296
 select * from t1 where a = 1;
---error 1146
-#--error 1296
+--error 1296
 select * from t1 where b = 4;
---error 1146
-#--error 1296
+--error 1296
 update t1 set b=102 where a = 2;
---error 1146
-#--error 1296
+--error 1296
 update t1 set b=103 where b = 3;
---error 1146
-#--error 1296
+--error 1296
 update t1 set b=b+100;
---error 1146
-#--error 1296
+--error 1296
 update t1 set b=b+100 where a > 7;
 
 --exec $NDB_MGM --no-defaults --ndb-connectstring="localhost:$NDBCLUSTER_PORT" -e "exit single user mode" >> $NDB_TOOLS_OUTPUT
 --exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults >> $NDB_TOOLS_OUTPUT
 
+#
+# we should be able to run transaction while in single user mode
+#
+--connection server1
+BEGIN;
+update t1 set b=b+100 where a=1;
+
+--connection server2
+BEGIN;
+update t1 set b=b+100 where a=2;
+
+# enter single user mode
+--exec $NDB_MGM --no-defaults --ndb-connectstring="localhost:$NDBCLUSTER_PORT" -e "enter single user mode $node_id" >> $NDB_TOOLS_OUTPUT
+--exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults --ndb-connectstring="localhost:$NDBCLUSTER_PORT" --single-user >> $NDB_TOOLS_OUTPUT
+
+--connection server1
+update t1 set b=b+100 where a=3;
+COMMIT;
+
+# while on other mysqld it should be aborted
+--connection server2
+--error 1296
+update t1 set b=b+100 where a=4;
+--error 1296
+COMMIT;
+
+--exec $NDB_MGM --no-defaults --ndb-connectstring="localhost:$NDBCLUSTER_PORT" -e "exit single user mode" >> $NDB_TOOLS_OUTPUT
+--exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults >> $NDB_TOOLS_OUTPUT
+
 # cleanup
 --connection server1
 drop table t1;
diff --git a/storage/ndb/include/kernel/signaldata/DictTabInfo.hpp b/storage/ndb/include/kernel/signaldata/DictTabInfo.hpp
index 1247e7e3480..57b4f0e7520 100644
--- a/storage/ndb/include/kernel/signaldata/DictTabInfo.hpp
+++ b/storage/ndb/include/kernel/signaldata/DictTabInfo.hpp
@@ -346,6 +346,7 @@ public:
     
     Uint32 RowGCIFlag;
     Uint32 RowChecksumFlag;
+
     Uint32 SingleUserMode;
     
     Table() {}