以Spark-Client模式运行，Spark-Submit时出现了下面的错误：
User: hadoop Name: Spark Pi Application Type: SPARK Application Tags: YarnApplicationState: FAILED FinalStatus Reported by AM: FAILED Started: 16-五月-2017 10:03:02 Elapsed: 14sec Tracking URL: History Diagnostics: Application application_1494900155967_0001 failed 2 times due to AM Container for appattempt_1494900155967_0001_000002 exited with exitCode: -103 For more detailed output, check application tracking page:http://master:8088/proxy/application_1494900155967_0001/Then, click on links to logs of each attempt. Diagnostics: Container [pid=6263,containerID=container_1494900155967_0001_02_000001] is running beyond virtual memory limits. Current usage: 107.3 MB of 1 GB physical memory used; 2.2 GB of 2.1 GB virtual memory used. Killing container.
我的SPARK-EXECUTOR-MEMORY设置的是1G，即物理内存是1G，Yarn默认的虚拟内存和物理内存比例是2.1，也就是说虚拟内存是2.1G，小于了需要的内存2.2G。解决的办法是把拟内存和物理内存比例增大，在yarn-site.xml中增加一个设置：
<property> <name>yarn.nodemanager.vmem-pmem-ratio</name> <value>2.5</value> </property>
再重启Yarn，这样一来就能有2.5G的虚拟内存，运行时就不会出错了。