Exception 1:当我们将任务提交给Spark Yarn集群时，大多会出现以下异常，如下：
14/08/09 11:45:32 WARN component.AbstractLifeCycle: FAILED SelectChannelConnector@0.0.0.0:4040: java.net.BindException: Address already in use
java.net.BindException: Address already in use
at sun.nio.ch.Net.bind0(Native Method)
at sun.nio.ch.Net.bind(Net.java:444)
at sun.nio.ch.Net.bind(Net.java:436)
Reason：端口被占用（In fact， 集群试图选择另外一个端口，所以该异常无大碍，Just Warning级别）
Solution: http://blog.csdn.net/sunflower_cao/article/details/37655873
Exception 2：
WARNYarnClientClusterScheduler: Initial job has not accepted any resources;check your cluster UI to ensure that workers are registered and havesufficient memory
Reason：提交任务的节点不能和spark工作节点交互，因为提交完任务后提交任务节点上会起一个进程，展示任务进度，大多端口为4044，工作节点需要反馈进度给该端口，所以如果主机名或者IP在hosts中配置不正确，就会报上述error
原文：http://www.cnblogs.com/likai198981/p/4134587.html