${jobTracker}
${nameNode}
mapred.job.queue.name
${queueName}
fs.swift.service.sahara.username
swiftuser
fs.swift.service.sahara.password
swiftpassword
org.openstack.sahara.examples.WordCount
swift://user.sahara/input
swift://user.sahara/output
Java failed, error message[${wf:errorMessage(wf:lastErrorNode())}]