Comment 3 for bug 1589919

We don't know how to reproduce it and have no specific log files.
All nodes have the same configuration, except for the ip address.

[mysqld]

wsrep_slave_threads = 8
innodb_autoinc_lock_mode = 2

# WSREP #
wsrep_provider = /usr/lib64/galera3/libgalera_smm.so
wsrep_cluster_address = "gcomm://10.1.1.14,10.1.1.15,10.1.1.11"
wsrep_cluster_name = 'PXC Cluster'
wsrep_node_address = 10.1.1.14
wsrep_node_incoming_address = 10.1.1.14
wsrep_node_name = 'db1'
wsrep_sst_method = xtrabackup-v2
wsrep_sst_auth = "sstuser:pass"
wsrep_sst_receive_address = 10.1.1.14
wsrep_retry_autocommit = 1
wsrep_sync_wait = 0

# General #
datadir = /var/lib/mysql
socket = /var/lib/mysql/mysql.sock
bind_address = 10.1.1.14
default_storage_engine = InnoDB
lower_case_table_names = 1
ssl = false

# MyISAM #
key_buffer_size = 16M
myisam_recover = FORCE,BACKUP

# SAFETY #
max_allowed_packet = 64M
max_connect_errors = 1000000
skip_name_resolve
sysdate_is_now = 1
innodb = FORCE
thread_stack = 262144
back_log = 2048
performance_schema = OFF
skip_show_database

# Binary Logging #
#log_bin = /var/lib/mysql-binlog/mysql-bin
#log_bin_index = /var/lib/mysql-binlog/mysql-bin
expire_logs_days = 14
sync_binlog = 1
binlog_format = row

# Logging #
slow_query_log = ON
log_queries_not_using_indexes = ON
long_query_time = 0.5
log_error = /var/lib/mysql/mysql.log

# CACHES AND LIMITS #
tmp_table_size = 64M
max_heap_table_size = 64M
join_buffer_size = 8M
query_cache_type = 1
query_cache_size = 512M
query_cache_limit = 8M
query_cache_min_res_unit = 1024
max_connections = 1000
thread_cache_size = 500
open-files-limit = 65535
table_definition_cache = 7000
table_open_cache = 7000

# InnoDB Related #
innodb_autoinc_lock_mode = 2
innodb_buffer_pool_instances = 20
innodb_buffer_pool_size = 20G
innodb_data_file_path = ibdata1:10M:autoextend
innodb_file_format = Barracuda
innodb_file_per_table = 1
innodb_flush_log_at_trx_commit = 0
innodb_flush_method = O_DIRECT
innodb_locks_unsafe_for_binlog = 1
innodb_log_file_size = 128M
innodb_log_files_in_group = 2
innodb_read_io_threads = 32
innodb_write_io_threads = 32
innodb_thread_concurrency = 16

[mysqld_safe]
pid-file = /run/mysqld/mysql.pid
syslog