Comment 8 for bug 1409710

Reproduced on stock MariaDB 10.0.16 on Centos 6.6:

# ./test_xtrabackup-v2-script-lp1409710.sh
--- os and db version ---
CentOS release 6.6 (Final)
Linux centos6-6 2.6.32-504.8.1.el6.x86_64 #1 SMP Wed Jan 28 21:11:36 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux
version 10.0.16-MariaDB-wsrep-log
version-comment MariaDB Server, wsrep_25.10.r4144
version-compile-machine x86_64
version-compile-os Linux
version-malloc-library bundled jemalloc
--- pertinent config ---
[mysqld]
datadir=/var/lib/mysql
[galera]
wsrep_provider=/usr/lib64/galera/libgalera_smm.so
wsrep_cluster_address=gcomm://192.168.122.114,192.168.122.115,192.168.122.116
wsrep_sst_method=xtrabackup-v2
wsrep_sst_auth=root:
#wsrep_slave_threads=1
--- simulate SST timeout ---
MySQL server PID file could not be found! [FAILED]
iptables: Setting chains to policy ACCEPT: filter [ OK ]
iptables: Flushing firewall rules: [ OK ]
iptables: Unloading modules: [ OK ]
--- blocking inbound SST on port 4444 ---
--- start node [mysqld] ---
Starting MySQL...SST in progress, setting sleep higher.....[FAILED]
--- looking for hung processes ---
mysql 9913 1 0 21:37 pts/0 00:00:00 /bin/bash -ue /usr//bin/wsrep_sst_xtrabackup-v2 --role joiner --address 192.168.122.116 --auth root: --datadir /var/lib/mysql/ --defaults-file /etc/my.cnf --parent 9903
mysql 10127 9913 0 21:37 pts/0 00:00:00 timeout 1 socat -u TCP-LISTEN:4444,reuseaddr stdio
mysql 10128 9913 0 21:37 pts/0 00:00:00 xbstream -x
mysql 10129 10127 0 21:37 pts/0 00:00:00 socat -u TCP-LISTEN:4444,reuseaddr stdio