hadoop2.0 yarn 内存溢出问题解决
异常提示：
Container [pid=20170,containerID=container_1390877171119_0002_01_000005] is running beyond virtual memory limits. Current usage: 416.8 MB of 1 GB physical memory used; 2.7 GB of 2.1 GB virtual memory used. Killing container.Container [pi
