跑demo，出现java.lang.reflect.UndeclaredThrowableException

[wjlight]

r1.4分支，hadoop使用2.7.3，在跑example tensorflow的时候，出现：

java.lang.reflect.UndeclaredThrowableException
at com.sun.proxy.$Proxy15.fetchApplicationMessages(Unknown Source)
at net.qihoo.xlearning.client.Client.waitCompleted(Client.java:792)
at net.qihoo.xlearning.client.Client.submitAndMonitor(Client.java:753)
at net.qihoo.xlearning.client.Client.main(Client.java:821)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:221)
at org.apache.hadoop.util.RunJar.main(RunJar.java:136)
Caused by: java.io.EOFException: End of File Exception between local host is: "54ef4e3d2490/172.17.0.2"; destination host is: "54ef4e3d2490":37821; : java.io.EOFExcept
ion; For more details see: http://wiki.apache.org/hadoop/EOFException
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at org.apache.hadoop.net.NetUtils.wrapWithMessage(NetUtils.java:792)
at org.apache.hadoop.net.NetUtils.wrapException(NetUtils.java:765)
at org.apache.hadoop.ipc.Client.call(Client.java:1479)
at org.apache.hadoop.ipc.Client.call(Client.java:1412)
at org.apache.hadoop.ipc.WritableRpcEngine$Invoker.invoke(WritableRpcEngine.java:243)
... 10 more
Caused by: java.io.EOFException
at java.io.DataInputStream.readInt(DataInputStream.java:392)
at org.apache.hadoop.ipc.Client$Connection.receiveRpcResponse(Client.java:1084)
at org.apache.hadoop.ipc.Client$Connection.run(Client.java:979)

看了http://wiki.apache.org/hadoop/EOFException
说是版本不对，但我检查了好几遍，hadoop版本和包都是一致的，都是2.7.3，节点也没有重启，可能会是什么原因呢？

[wjlight]

仔细看了nodemanger的log，发现是内存分配的不够，然后被杀掉了。解决办法：提交的添加am-memory 参数增加内存分配