I bisected the MariaDB source tree and found out that this commit fixed the issue:
40497577ffd9f85557b15e08ad913f627b2e9530 - it is related to this: https://jira.mariadb.org/browse/MDEV-6450 -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1657256 Title: Percona crashes when doing a a 'larger' update To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/percona-xtradb-cluster-5.5/+bug/1657256/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs