Guys after many hours of digging around I have found that the node crash had to do with innobackupex lock.
check this out.
https://bugs.launchpad.net/percona-xtradb-cluster/+bug/1401133
http://www.percona.com/forums/questions-discussions/percona-xtrabackup/31893-innobackupex-crashing-percona-server-5-6-21-70-1
Guys after many hours of digging around I have found that the node crash had to do with innobackupex lock.
check this out.
https:/ /bugs.launchpad .net/percona- xtradb- cluster/ +bug/1401133
http:// www.percona. com/forums/ questions- discussions/ percona- xtrabackup/ 31893-innobacku pex-crashing- percona- server- 5-6-21- 70-1