erl_crash.dump when stop couchbase: Stopping couchbase-server{error_logger,{{2013,3,21},{4,54,2}},"Protocol: ~p: register error: ~p~n",["inet_tcp",{{badmatch,{error,duplicate_name}},

http://qa.hq.northscale.net/view/2.0.1/job/ubuntu-64-2.0-new-rebalance-tests-P0/395/consoleFull
./testrunner -i /tmp/rebalance-tests.ini get-logs=True,wait_timeout=180,GROUP=P0,get-cbcollect-info=True -t rebalance.rebalanceout.RebalanceOutTests.rebalance_out_with_warming_up,nodes_out=3,items=500000,replicas=2,max_verify=100000,GROUP=OUT;P0

there are no any specific cases:
1. cluster 7 nodes, 1 bucket
2. try to stop server om 10.3.121.64

[root@cen-2707 ~]# /etc/init.d/couchbase-server status
couchbase-server is running
[root@cen-2707 ~]# /etc/init.d/couchbase-server stop
Stopping couchbase-server{error_logger,2013,3,21},{4,54,2,"Protocol: ~p: register error: ~p~n",["inet_tcp",badmatch,{error,duplicate_name,[

{inet_tcp_dist,listen,1}

,

{net_kernel,start_protos,4}

,

{net_kernel,start_protos,3}

,

{net_kernel,init_node,2}

,

{net_kernel,init,1}

,

{gen_server,init_it,6},{proc_lib,init_p_do_apply,3}]}]}
{error_logger,2013,3,21},{4,54,2,crash_report,[[{initial_call,{net_kernel,init,['Argument__1']}},{pid,<0.20.0>},{registered_name,[]},{error_info,{exit,{error,badarg},[{gen_server,init_it,6}

,

{proc_lib,init_p_do_apply,3}

]}},

{ancestors,[net_sup,kernel_sup,<0.9.0>]}

,

{messages,[]}

,

{links,[#Port<0.53>,<0.17.0>]}

,{dictionary,[

{longnames,true}

]},

{trap_exit,true}

,

{status,running}

,

{heap_size,377}

,

{stack_size,24}

,

{reductions,475}

],[]]}
{error_logger,2013,3,21},{4,54,2,supervisor_report,[{supervisor,{local,net_sup}},

{errorContext,start_error},{reason,{'EXIT',nodistribution}},{offender,[{pid,undefined},{name,net_kernel},{mfargs,{net_kernel,start_link,[['executioner@executioner',longnames]]}},{restart_type,permanent},{shutdown,2000},{child_type,worker}]}]}
{error_logger,2013,3,21},{4,54,2,supervisor_report,[{supervisor,{local,kernel_sup}},{errorContext,start_error}

,

{reason,shutdown}

,{offender,[

{pid,undefined}

,

{name,net_sup}

,{mfargs,{erl_distribution,start_link,[]}},

{restart_type,permanent}

,

{shutdown,infinity}

,

{child_type,supervisor}

]}]}
{error_logger,2013,3,21},{4,54,2,std_info,[

{application,kernel}

,{exited,{shutdown,

{kernel,start,[normal,[]]}}},{type,permanent}]}
{"Kernel pid terminated",application_controller,"{application_start_failure,kernel,{shutdown,{kernel,start,[normal,[]]}

}}"}

Crash dump was written to: erl_crash.dump.03-21-2013-04:54:02.29366
Kernel pid terminated (application_controller) ({application_start_failure,kernel,{shutdown,

{kernel,start,[normal,[]]}

}})