XbStream is waiting


I am new to xtrabackup.
I tried to take a backup using xbstream and stored it in my disk which is in other machine. Later I am trying to apply the data to the xbstream command. The command waits and it is not exiting.

But i see a that when my last chunk got applied and after some time, the data is extracted to the specified folder but the process is still watiing for something.

[root@rhel6532bit _stage]# ps aux | grep “xbstream”
root 15436 0.0 0.1 24652 11624 ? Sl 14:08 0:00 /usr/bin/xbstream -x -C /_stage/new

Can anyone tell me, what the xbstream command is waiting for?