Created question in FIWARE Q/A platform on 09-07-2015 at 08:07
Please, ANSWER this question AT http://stackoverflow.com/questions/31310111/oauth2-in-cygnus

Question:
OAuth2 in Cygnus

Description:
Since it was announced the access to Cosmos' WebHDFS in FIWARE Lab is protected with OAuth2, Cygnus (version 0.8.1) is not able to persist Orion's context data in Cosmos HDFS:

15/07/09 08:45:21 INFO handlers.OrionRestHandler: Starting transaction (1436424291-649-0000000000)
15/07/09 08:45:21 INFO handlers.OrionRestHandler: Received data ({ "subscriptionId" : "51c0ac9ed714fb3b37d7d5a8", "originator" : "localhost", "contextResponses" : [ { "contextElement" : { "attributes" : [

], "type" : "Room", "isPattern" : "false", "id" : "Room1" }, "statusCode" :

} ]})
15/07/09 08:45:21 INFO handlers.OrionRestHandler: Event put in the channel (id=109760451, ttl=10)
15/07/09 08:45:21 INFO sinks.OrionSink: Event got from the channel (id=109760451, headers=

, bodyLength=460)
15/07/09 08:45:22 INFO sinks.OrionHDFSSink: [hdfs-sink] Persisting data at OrionHDFSSink. HDFS file (def_serv/def_serv_path/room1_room/room1_room.txt), Data (

)
15/07/09 08:45:22 ERROR sinks.OrionSink: Persistence error (The /user/frb/def_serv/def_serv_path/room1_room directory could not be created in HDFS. HttpFS response: 503 Service unavailable)
15/07/09 08:45:22 INFO sinks.OrionSink: An event was put again in the channel (id=109760451, ttl=9)
15/07/09 08:45:22 INFO sinks.OrionSink: Finishing transaction (1436424291-649-0000000000)

I figure out an OAuth2 token has to be configured somewhere, but how?