Eclipse開發環境搭建問題處理13/03/1823:49:04INFOjvm.JvmMetrics:InitializingJVMMetricswithprocessName=JobTracker,sessionId=Exceptioninthread"main"java.io.IOException:Cannotrunprogram"chmod":CreateProcesserror=2,????????? atjava.lang.ProcessBuilder.start(ProcessBuilder.java:460)解決方法：安裝cygwin，缺省安裝。在環境變量PATH中增加相應目錄：在PATH中增加D:\ProgramFiles\Java\jdk1.6.0_41\bin;D:\cygwin\bin;D:\cygwin。13/03/1823:53:09INFOjvm.JvmMetrics:InitializingJVMMetricswithprocessName=JobTracker,sessionId=13/03/1823:53:09WARNmapred.JobClient:Nojobjarfileset.Userclassesmaynotbefound.SeeJobConf(Class)orJobConf#setJar(String).13/03/1823:53:09INFOinput.FileInputFormat:Totalinputpathstoprocess:113/03/1823:53:09INFOmapred.JobClient:Runningjob:job_local_000113/03/1823:53:09INFOinput.FileInputFormat:Totalinputpathstoprocess:113/03/1823:53:09WARNmapred.LocalJobRunner:job_local_0001org.apache.hadoop.security.AccessControlException:org.apache.hadoop.security.AccessControlException:Permissiondenied:user=lihuaimin\administrator,access=WRITE,inode="tmp":grid:supergroup:rwxrwxr-x atsun.reflect.NativeConstructorAccessorImpl.newInstance0(NativeMethod) atsun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39) atsun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) atjava.lang.reflect.Constructor.newInstance(Constructor.java:513) atorg.apache.hadoop.ipc.RemoteException.instantiateException(RemoteException.java:96) atorg.apache.hadoop.ipc.RemoteException.unwrapRemoteException(RemoteException.java:58) atorg.apache.hadoop.hdfs.DFSClient.mkdirs(DFSClient.java:914)解決辦法：在hadoop服務器上執行如下命令：hadoopdfs-chmod777/tmphadoopdfs-chmod777/input配置Hadoop時，一定要配置Hadoop的Advancedparameters。參數中的目錄是hadoop服務器上的目錄名，一定要改過來。凡是administrator的地方都改為grid，即hadoop運行的那個用戶。Hadoop.job.ugi要設為g