Comment 2 for bug 1078759

From https://mariadb.atlassian.net/browse/MDEV-3848

This test runs larger and larger transactions and in the end the size of the transaction is ~1M rows. Galera does not currently support arbitarily large transactions. There are configuration variables 'wsrep_max_ws_rows' and 'wsrep_max_ws_size' to abort huge transaction before OOM would happen.

Huge transaction support is in design phase and will be part of some future release.