MDEV-4877 mysqldump dumps all data from a connect table

client/mysqldump.c

@@ -5144,6 +5144,7 @@ char check_if_ignore_table(const char *table_name, char *table_type)
     if (!opt_no_data &&
         (!my_strcasecmp(&my_charset_latin1, table_type, "MRG_MyISAM") ||
          !strcmp(table_type,"MRG_ISAM") ||
+         !strcmp(table_type,"CONNECT") ||
          !strcmp(table_type,"FEDERATED")))
       result= IGNORE_DATA;
   }

storage/connect/mysql-test/connect/r/mysql.result

@@ -217,3 +217,24 @@ t2	CREATE TABLE `t2` (
 SELECT * FROM t2;
 a
 DROP TABLE t2, t1;
+#
+# MDEV-4877 mysqldump dumps all data from a connect table
+#
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (10),(20),(30);
+CREATE TABLE t2 ENGINE=CONNECT TABLE_TYPE=MYSQL CONNECTION='mysql://root@localhost:PORT/test/t1';
+SELECT * FROM t2;
+a
+10
+20
+30
+# Start of mysqldump ------
+/*!40101 SET @saved_cs_client     = @@character_set_client */;
+/*!40101 SET character_set_client = utf8 */;
+CREATE TABLE `t2` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=CONNECT DEFAULT CHARSET=latin1 CONNECTION='mysql://root@localhost:PORT/test/t1' `TABLE_TYPE`='MYSQL';
+/*!40101 SET character_set_client = @saved_cs_client */;
+# End of mysqldump ------
+DROP TABLE t2;
+DROP TABLE t1;

storage/connect/mysql-test/connect/t/mysql.test

@@ -420,3 +420,17 @@ DROP TABLE t2, t1;
 # TODO: add test for YEAR
 # TODO: add tests for fractional seconds
 
+--echo #
+--echo # MDEV-4877 mysqldump dumps all data from a connect table
+--echo #
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (10),(20),(30);
+--replace_result $PORT PORT
+--eval CREATE TABLE t2 ENGINE=CONNECT TABLE_TYPE=MYSQL CONNECTION='mysql://root@localhost:$PORT/test/t1'
+SELECT * FROM t2;
+--echo # Start of mysqldump ------
+--replace_result $PORT PORT
+--exec $MYSQL_DUMP --compact test t2
+--echo # End of mysqldump ------
+DROP TABLE t2;
+DROP TABLE t1;