hadoop dfs -chmod 777 /tmp
At 2011-05-08 04:56:22，"Iwona Bialynicka-Birula" <iwona...@atigeo.com> wrote: >Hello, > >I am trying to debug a Hadoop MapReduce job under Eclipse in Windows and I am >running into a problem when the Hadoop framework tries to set up the staging >directory (see the stack trace below) and change its permissions to 700. It is >doing it in RawLocalFileSystem.setPermissions by calling >java.io.File.setReadable(false, false), but under Windows this always fails, >since you're not allowed to set readable to false. Is there a workaround for >this to enable debugging in a Windows environment, or is such a scenario >simply not possible? > >(I am using Windows 7, Hadoop 0.20.2, Java 6. I have Cygwin installed, but in >this case it is not using it, since it is making the system call directly.) > >Thanks, >Iwona > >java.io.IOException: Failed to set permissions of path: >file:/tmp/hadoop-iwonabb/mapred/staging/iwonabb-1931875024/.staging to 0700 > at > org.apache.hadoop.fs.RawLocalFileSystem.checkReturnValue(RawLocalFileSystem.java:526) > at > org.apache.hadoop.fs.RawLocalFileSystem.setPermission(RawLocalFileSystem.java:500) > at > org.apache.hadoop.fs.RawLocalFileSystem.mkdirs(RawLocalFileSystem.java:310) > at > org.apache.hadoop.fs.FilterFileSystem.mkdirs(FilterFileSystem.java:189) > at > org.apache.hadoop.mapreduce.JobSubmissionFiles.getStagingDir(JobSubmissionFiles.java:116) > at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:799) > at org.apache.hadoop.mapred.JobClient$2.run(JobClient.java:793) > at java.security.AccessController.doPrivileged(Native Method) > at javax.security.auth.Subject.doAs(Unknown Source) > at > org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1063) > at > org.apache.hadoop.mapred.JobClient.submitJobInternal(JobClient.java:793) > at org.apache.hadoop.mapreduce.Job.submit(Job.java:465) > at > org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:495) > at > com.xpatterns.xrelevance.hadoop.training.crn.CRNTraining.run(CRNTraining.java:168) > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) > at > com.xpatterns.xrelevance.hadoop.training.crn.CRNTraining.main(CRNTraining.java:46) > at > com.xpatterns.xrelevance.tests.CRNTrainingMRvsSingle.compare(CRNTrainingMRvsSingle.java:88) > at > com.xpatterns.xrelevance.tests.CRNTrainingMRvsSingle.compare(CRNTrainingMRvsSingle.java:136) > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) > at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown > Source) > at java.lang.reflect.Method.invoke(Unknown Source) > at > org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44) > at > org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) > at > org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41) > at > org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:76) > at > org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:50) > at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193) > at > org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52) > at > org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191) > at > org.junit.runners.ParentRunner.access$000(ParentRunner.java:42) > at > org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184) > at org.junit.runners.ParentRunner.run(ParentRunner.java:236) > at > org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49) > at > org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) > at > org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197) >
