when you build a spark standalone ha cluster, when you submit your app, you should send it to the leader master, not the standby master, how to decided the status of the two masters? a simple way, not judge the status which master is the active, you
For currently popular distributed framework Spark, here is the intro and step to configure the spark standalone mode on several machines. It is easy to configure it from stratch. The following instructions is based on the spark-2.0.2-bin-hadoop2.7 a