mount盘异常，导致hadoop作业无法发送

异常信息

 

2012-10-23 21:10:42,185 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: 127.0.0.1/127.0.0.1:34474. Already tried 5 time(s).

2012-10-23 21:10:43,186 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: 127.0.0.1/127.0.0.1:34474. Already tried 6 time(s).

2012-10-23 21:10:44,186 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: 127.0.0.1/127.0.0.1:34474. Already tried 7 time(s).

2012-10-23 21:10:45,187 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: 127.0.0.1/127.0.0.1:34474. Already tried 8 time(s).

2012-10-23 21:10:46,187 INFO org.apache.hadoop.ipc.Client: Retrying connect to server: 127.0.0.1/127.0.0.1:34474. Already tried 9 time(s).

2012-10-23 21:10:46,188 INFO org.apache.hadoop.mapred.Task: Communication exception: java.net.ConnectException: Call to 127.0.0.1/127.0.0.1:34474 failed on connection exception: java.net.ConnectException: \u62d2\u7edd\u8fde\u63a5

at org.apache.hadoop.ipc.Client.wrapException(Client.java:1099)

at org.apache.hadoop.ipc.Client.call(Client.java:1075)

at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:225)

at $Proxy1.ping(Unknown Source)

at org.apache.hadoop.mapred.Task$TaskReporter.run(Task.java:675)

at java.lang.Thread.run(Thread.java:619)

Caused by: java.net.ConnectException: \u62d2\u7edd\u8fde\u63a5

at sun.nio.ch.SocketChannelImpl.checkConnect(Native Method)

at sun.nio.ch.SocketChannelImpl.finishConnect(SocketChannelImpl.java:574)

at org.apache.hadoop.net.SocketIOWithTimeout.connect(SocketIOWithTimeout.java:206)

at org.apache.hadoop.net.NetUtils.connect(NetUtils.java:489)

at org.apache.hadoop.ipc.Client$Connection.setupConnection(Client.java:434)

at org.apache.hadoop.ipc.Client$Connection.setupIOstreams(Client.java:560)

at org.apache.hadoop.ipc.Client$Connection.access$2000(Client.java:184)

at org.apache.hadoop.ipc.Client.getConnection(Client.java:1206)

at org.apache.hadoop.ipc.Client.call(Client.java:1050)

... 4 more

原因：

    mount挂了盘，但是该盘已经死掉了，df都无法运行完毕，umount该盘即可成功运行