$HOSTNAME 확인하고
/etc/hosts 에 127.0.0.1 $HOSTNAME 추가한다
참고 https://coderwall.com/p/ktbkea/play-framework-2-error-nodename-nor-servname-provided-or-not-known
더보기
16/11/02 09:54:23 ERROR SparkContext: Error initializing SparkContext.
Caused by: java.net.UnknownHostException: Soleilui-iMac.local: nodename nor servname provided, or not known
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:901)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1295)
at java.net.InetAddress.getLocalHost(InetAddress.java:1471)
... 20 more