Test main.index_merge_innodb is unstable

[Laurynas Biveinis]

On 5.6 trunk:

main.index_merge_innodb w2 [ fail ]
        Test ended at 2017-01-11 08:54:34

CURRENT_TEST: main.index_merge_innodb
--- /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/ubuntu-xenial-32bit/mysql-test/r/index_merge_innodb.result 2017-01-03 15:06:26.917177432 +0300
+++ /mnt/workspace/percona-server-5.6-trunk/BUILD_TYPE/debug/Host/ubuntu-xenial-32bit/build/mysql-test/var/2/log/index_merge_innodb.reject 2017-01-11 16:54:33.476707245 +0300
@@ -698,7 +698,7 @@
 key1 key2 filler1
 explain select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 id select_type table type possible_keys key key_len ref rows Extra
-1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key3,key4 5,5,5,5 NULL 4 Using union(intersect(key1,key2),intersect(key3,key4)); Using where
+1 SIMPLE t1 index_merge key1,key2,key3,key4 key1,key2,key4,key3 5,5,5,5 NULL 4 Using union(intersect(key1,key2),intersect(key4,key3)); Using where
 select key1,key2,key3,key4,filler1 from t1 where key1=100 and key2=100 or key3=100 and key4=100;
 key1 key2 key3 key4 filler1
 -1 -1 100 100 key4-key3

mysqltest: Result content mismatch

[Laurynas Biveinis (laurynas-biveinis)]

See bug 1625151

[Laurynas Biveinis (laurynas-biveinis)]

     https://github.com/percona/percona-server/pull/1460
     https://github.com/percona/percona-server/pull/1461

[Shahriyar Rzayev (rzayev-sehriyar)]

Percona now uses JIRA for bug reports so this bug report is migrated to: https://jira.percona.com/browse/PS-2226