Test main.mysqldump is unstable

[Laurynas Biveinis]

On 5.6 trunk:

main.mysqldump w1 [ fail ]
        Test ended at 2017-03-07 08:37:18

CURRENT_TEST: main.mysqldump
mysqldump: Couldn't find table: "non_existing"
mysqldump: Got error: 1356: View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them when using LOCK TABLES
mysqldump: Couldn't execute 'SHOW FIELDS FROM `v1`': View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them (1356)
mysqldump: Got error: 1083: Field separator argument is not what is expected; check the manual when executing 'SELECT INTO OUTFILE'
mysqldump: Got error: 1083: Field separator argument is not what is expected; check the manual when executing 'SELECT INTO OUTFILE'
mysqldump: Got error: 1083: Field separator argument is not what is expected; check the manual when executing 'SELECT INTO OUTFILE'
Warning: Using a password on the command line interface can be insecure.
mysqldump: user2 has insufficent privileges to SHOW CREATE PROCEDURE `sp1`!
Warning: Using a password on the command line interface can be insecure.
mysqldump: Got error: 1146: Table 'test.???????????????????????' doesn't exist when using LOCK TABLES
mysqldump: Got error: 1083: Field separator argument is not what is expected; check the manual when executing 'SELECT INTO OUTFILE'
mysqldump: Got error: 1083: Field separator argument is not what is expected; check the manual when executing 'SELECT INTO OUTFILE'
mysqldump: user1 has insufficent privileges to SHOW CREATE FUNCTION `hello1`!
--- /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/centos5-64/mysql-test/r/mysqldump.result 2017-03-07 15:06:24.000000000 +0300
+++ /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/centos5-64/build/mysql-test/var/1/log/mysqldump.reject 2017-03-07 16:37:18.000000000 +0300
@@ -2132,8 +2132,6 @@
 # Bug#21288 mysqldump segmentation fault when using --where
 #
 create table t1 (a int);
-mysqldump: Couldn't execute 'SELECT /*!40001 SQL_NO_CACHE */ * FROM `t1` WHERE xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx': You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' at line 1 (1064)
-mysqldump: Got error: 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' at line 1 when retrieving data from server

 /*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
 /*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
@@ -2149,7 +2147,9 @@
 /*!50112 SET @save_old_rocksdb_bulk_load = IF (@is_rocksdb_supported, 'SET @old_rocksdb_bulk_load = @@rocksdb_bulk_load', 'SET @dummy_old_rocksdb_bulk_load = 0') */;
 /*!50112 PREPARE s FROM @save_old_rocksdb_bulk_load */;
 /*!50112 EXECUTE s */;
-/*!50112 SET @enable_bulk_load = IF (@is_rocksdb_supported, 'SET SESSION rocksdb_bulk_load = 1', 'SET @dummy_rocksdb_bulk_load = 0') */;
+/*!50112 SET @enable_bulk_load = IF (@is_rocksmysqldump: Couldn't execute 'SELECT /*!40001 SQL_NO_CACHE */ * FROM `t1` WHERE xx xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx': You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' at line 1 (1064)
+mysqldump: Got error: 1064: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx' at line 1 when retrieving data from server
+db_supported, 'SET SESSION rocksdb_bulk_load = 1', 'SET @dummy_rocksdb_bulk_load = 0') */;
 /*!50112 PREPARE s FROM @enable_bulk_load */;
 /*!50112 EXECUTE s */;
 /*!50112 DEALLOCATE PREPARE s */;

mysqltest: Result content mismatch

This is caused by expecting a certain interleaving between buffered stdout and unbuffered stderr output, which is non-deterministic. This is similar to e.g. https://bugs.mysql.com/bug.php?id=67737

[Laurynas Biveinis (laurynas-biveinis)]

     https://github.com/percona/percona-server/pull/1482
     https://github.com/percona/percona-server/pull/1483

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2242