Initial state:
mysql> show variables like 'wsrep_provider_options'\G
*************************** 1. row ***************************
Variable_name: wsrep_provider_options
Value: base_host = 192.168.3.254; base_port = 10021; cert.log_conflicts = no; evs.causal_keepalive_period = PT1S; evs.debug_log_mask = 0x1; evs.inactive_check_period = PT0.5S; evs.inactive_timeout = PT15S; evs.info_log_mask = 0; evs.install_timeout = PT15S; evs.join_retrans_period = PT1S; evs.keepalive_period = PT1S; evs.max_install_timeouts = 1; evs.send_window = 4; evs.stats_report_period = PT1M; evs.suspect_timeout = PT5S; evs.use_aggregate = true; evs.user_send_window = 2; evs.version = 0; evs.view_forget_timeout = PT5M; gcache.dir = /run/shm/galera/local2/mysql/var/; gcache.keep_pages_size = 0; gcache.mem_size = 0; gcache.name = /run/shm/galera/local2/mysql/var//galera.cache; gcache.page_size = 128M; gcache.size = 128M; gcs.fc_debug = 0; gcs.fc_factor = 0.5; gcs.fc_limit = 16; gcs.fc_master_slave = NO; gcs.max_packet_size = 64500; gcs.max_throttle = 0.25; gcs.recv_q_hard_limit = 9223372036854775807; gcs.recv_q_soft_limit = 0.25; gcs.sync_donor = NO; gmcast.listen_addr = tcp://192.168.3.254:10021; gmcast.mcast_addr = ; gmcast.mcast_ttl = 1; gmcast.peer_timeout = PT3S; gmcast.time_wait = PT5S; gmcast.version = 0; ist.recv_addr = 192.168.3.254; pc.checksum = true; pc.ignore_quorum = false; pc.ignore_sb = false; pc.linger = PT2S; pc.npvo = false; pc.version = 0; protonet.backend = asio; protonet.version = 0; replicator.causal_read_timeout = PT30S; replicator.commit_order = 3
1 row in set (0.00 sec)
Set provider option that is not recognized by provider:
mysql> set global wsrep_provider_options='invalid_option=1';
ERROR 1210 (HY000): Incorrect arguments to SET
Now wsrep_provider_options variable contains only invalid_option:
mysql> show variables like 'wsrep_provider_options'\G
*************************** 1. row ***************************
Variable_name: wsrep_provider_options
Value: invalid_option=1
1 row in set (0.00 sec)
Expected outcome: Error is returned to client and wsrep_provider_options remains unchanged.
