Dear All,
  I use Hadoop-0.17.0,when I submit my job ,it shows  Exceptions as below,it 
seems that the system itself has some problem.I am confused.Does anybody know 
why?
Please help me. Thanks in advance.

08/07/28 21:42:43 INFO mapred.FileInputFormat: Total input paths to process : 2
org.apache.hadoop.ipc.RemoteException: java.io.IOException: 
/home/hdfs/DSCPVegaICT/tmp/mapred/system/job_200807281516_0013/job.xml: No such 
file or directory
        at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:215)
        at org.apache.hadoop.fs.FileUtil.copy(FileUtil.java:149)
        at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:1155)
        at org.apache.hadoop.fs.FileSystem.copyToLocalFile(FileSystem.java:1136)
        at org.apache.hadoop.mapred.JobInProgress.<init>(JobInProgress.java:175)
        at org.apache.hadoop.mapred.JobTracker.submitJob(JobTracker.java:1869)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.ipc.RPC$Server.call(RPC.java:446)
        at org.apache.hadoop.ipc.Server$Handler.run(Server.java:964)

        at org.apache.hadoop.ipc.Client.call(Client.java:604)
        at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:213)
        at $Proxy1.submitJob(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at 
org.apache.hadoop.io.retry.RetryInvocationHandler.invokeMethod(RetryInvocationHandler.java:82)
        at 
org.apache.hadoop.io.retry.RetryInvocationHandler.invoke(RetryInvocationHandler.java:59)
        at $Proxy1.submitJob(Unknown Source)
        at org.apache.hadoop.mapred.JobClient.submitJob(JobClient.java:758)
        at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:973)
        at org.ict.vega.hadoop.Merge.run(Merge.java:72)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.ict.vega.hadoop.Merge.main(Merge.java:80)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:597)
        at org.apache.hadoop.util.RunJar.main(RunJar.java:155)
        at org.apache.hadoop.mapred.JobShell.run(JobShell.java:194)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65)
        at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79)
        at org.apache.hadoop.mapred.JobShell.main(JobShell.java:220)

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