MDEV-4468 Assertion `error != 0' fails or timeout occurs on select from a FEDERATED table which points at a non-existent table

Federated uses SHOW TABLE STATUS LIKE for ::info().
For nonexisting remote table it doesn't fail, but returns an empty result set.
We need to fake the error in the handler.

2 files changed, 18 insertions, 0 deletions

diff --git a/mysql-test/suite/federated/federated.result b/mysql-test/suite/federated/federated.result
index 6dcd6b1721b..8f5ae341080 100644
--- a/mysql-test/suite/federated/federated.result
+++ b/mysql-test/suite/federated/federated.result
@@ -7,6 +7,12 @@ Level	Code	Message
 Error	1	server name: 'non_existing' doesn't exist!
 Error	1	Can't create/write to file 'non_existing' (Errcode: 14)
 Error	1005	Can't create table 'test.t1' (errno: 1)
+create table t1 (a int);
+create table fed (a int) engine=Federated CONNECTION='mysql://root@127.0.0.1:MASTER_PORT/test/t1';
+drop table t1;
+select * from fed;
+Got one of the listed errors
+drop table fed;
 DROP TABLE IF EXISTS federated.t1;
 DROP DATABASE IF EXISTS federated;
 DROP TABLE IF EXISTS federated.t1;
diff --git a/mysql-test/suite/federated/federated.test b/mysql-test/suite/federated/federated.test
index 88d20817996..cb14dc2a239 100644
--- a/mysql-test/suite/federated/federated.test
+++ b/mysql-test/suite/federated/federated.test
@@ -8,5 +8,17 @@ connection master;
 CREATE TABLE t1 (a INT) ENGINE=FEDERATED CONNECTION='non_existing';
 SHOW WARNINGS;
 
+#
+# MDEV-4468 Assertion `error != 0' fails or timeout occurs on select from a FEDERATED table which points at a non-existent table
+#
+
+create table t1 (a int);
+--replace_result $MASTER_MYPORT MASTER_PORT
+eval create table fed (a int) engine=Federated CONNECTION='mysql://root@127.0.0.1:$MASTER_MYPORT/test/t1';
+drop table t1;
+--error 1146,1431
+select * from fed;
+drop table fed;
+
 source include/federated_cleanup.inc;