N MetricsSystem: Using default name DAGScheduler for
> source because spark.app.id is not set.
>
> 16/05/09 13:35:14 ERROR SparkContext: Error initializing SparkContext.
>
> org.apache.spark.SparkException: Yarn application has already ended
05/09 13:35:14 ERROR SparkContext: Error initializing SparkContext.
org.apache.spark.SparkException: Yarn application has already ended! It
might have been killed or unable to launch application master.
at
org.apache.spark.scheduler.cluster.YarnClientSchedulerBackend.waitForApplic
