diff --git a/mysql-test/r/trigger.result b/mysql-test/r/trigger.result
index e5d1b5a3f1f..edd083f73aa 100644
--- a/mysql-test/r/trigger.result
+++ b/mysql-test/r/trigger.result
@@ -1372,4 +1372,45 @@ INSERT INTO bug22580_t1 VALUES (1,1);
 DROP TABLE bug22580_t1;
 DROP PROCEDURE bug22580_proc_1;
 DROP PROCEDURE bug22580_proc_2;
+DROP TRIGGER IF EXISTS trg27006_a_update;
+DROP TRIGGER IF EXISTS trg27006_a_insert;
+CREATE TABLE t1 (
+`id` int(10) unsigned NOT NULL auto_increment,
+`val` varchar(10) NOT NULL,
+PRIMARY KEY  (`id`)
+);
+CREATE TABLE t2 like t1;
+CREATE TRIGGER trg27006_a_insert AFTER INSERT ON t1 FOR EACH ROW
+BEGIN
+insert into t2 values (NULL,new.val);
+END |
+CREATE TRIGGER trg27006_a_update AFTER UPDATE ON t1 FOR EACH ROW
+BEGIN
+insert into t2 values (NULL,new.val);
+END |
+INSERT INTO t1(val) VALUES ('test1'),('test2');
+SELECT * FROM t1;
+id	val
+1	test1
+2	test2
+SELECT * FROM t2;
+id	val
+1	test1
+2	test2
+INSERT INTO t1 VALUES (2,'test2') ON DUPLICATE KEY UPDATE val=VALUES(val);
+INSERT INTO t1 VALUES (3,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
+SELECT * FROM t1;
+id	val
+1	test1
+2	test2
+3	test3
+SELECT * FROM t2;
+id	val
+1	test1
+2	test2
+3	test2
+4	test3
+DROP TRIGGER trg27006_a_insert;
+DROP TRIGGER trg27006_a_update;
+drop table t1,t2;
 End of 5.0 tests
diff --git a/mysql-test/t/trigger.test b/mysql-test/t/trigger.test
index 14608a3b193..22d3a68ba74 100644
--- a/mysql-test/t/trigger.test
+++ b/mysql-test/t/trigger.test
@@ -1699,4 +1699,42 @@ DROP TABLE bug22580_t1;
 DROP PROCEDURE bug22580_proc_1;
 DROP PROCEDURE bug22580_proc_2;
 
+#
+# Bug#27006: AFTER UPDATE triggers not fired with INSERT ... ON DUPLICATE KEY
+#            UPDATE if the row wasn't actually changed.
+#
+--disable_warnings
+DROP TRIGGER IF EXISTS trg27006_a_update;
+DROP TRIGGER IF EXISTS trg27006_a_insert;
+--enable_warnings
+
+CREATE TABLE t1 (
+  `id` int(10) unsigned NOT NULL auto_increment,
+  `val` varchar(10) NOT NULL,
+  PRIMARY KEY  (`id`)
+);
+CREATE TABLE t2 like t1;
+DELIMITER |;
+
+CREATE TRIGGER trg27006_a_insert AFTER INSERT ON t1 FOR EACH ROW
+BEGIN
+    insert into t2 values (NULL,new.val);
+END |
+CREATE TRIGGER trg27006_a_update AFTER UPDATE ON t1 FOR EACH ROW
+BEGIN
+    insert into t2 values (NULL,new.val);
+END |
+DELIMITER ;|
+
+INSERT INTO t1(val) VALUES ('test1'),('test2');
+SELECT * FROM t1;
+SELECT * FROM t2;
+INSERT INTO t1 VALUES (2,'test2') ON DUPLICATE KEY UPDATE val=VALUES(val);
+INSERT INTO t1 VALUES (3,'test3') ON DUPLICATE KEY UPDATE val=VALUES(val);
+SELECT * FROM t1;
+SELECT * FROM t2;
+DROP TRIGGER trg27006_a_insert;
+DROP TRIGGER trg27006_a_update;
+drop table t1,t2;
+
 --echo End of 5.0 tests