[MDEV-24867] wsrep.variables MTR failed: Result length mismatch - Jira

wsrep.variables failed on BB 10.2 CS: "Result length mismatch".
It seems to be a sporadic issue.

10.2., 8cdeee177d353e60f4a9cdebe6c851f9505d84b5, kvm-deb-bionic-aarch64
wsrep.variables 'innodb' w2 [ fail ]
Test ended at 2021-01-26 07:03:55

CURRENT_TEST: wsrep.variables
--- /usr/share/mysql/mysql-test/suite/wsrep/r/variables.result 2021-01-26 03:19:48.000000000 -0500
+++ /dev/shm/var/2/log/variables.reject 2021-01-26 07:03:55.030955069 -0500
@@ -142,7 +142,7 @@
SET @@global.wsrep_sst_auth= '';
SELECT @@global.wsrep_sst_auth;
@@global.wsrep_sst_auth
-
+NULL
SET @@global.wsrep_sst_auth= NULL;
SELECT @@global.wsrep_sst_auth;
@@global.wsrep_sst_auth

mysqltest: Result length mismatch

- saving '/dev/shm/var/2/log/wsrep.variables-innodb/' to '/dev/shm/var/log/wsrep.variables-innodb/'

Retrying test wsrep.variables, attempt(2/3)...

Transition	Time In Source Status	Execution Times

Jan Lindström (Inactive) made transition - 2021-02-16 09:52

Open

In Progress

20h 31m

Jan Lindström (Inactive) made transition - 2021-12-27 07:02

In Progress

Closed

313d 21h 9m

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