Hi Akhil, Your mapred.local.dir is pointing to a directory which either does not have permissions for the user running the daemon, or has been removed. Check that configuration variable and make sure it's pointing to a directory that's writable by the hadoop user.
-Todd On Sat, Jul 18, 2009 at 3:32 PM, akhil1988 <[email protected]> wrote: > > Hi All, > > Can anyone tell when does one get these errors? > > Error initializing attempt_200907151459_0096_m_000001_1: > org.apache.hadoop.util.DiskChecker$DiskErrorException: Could not find any > valid local directory for > taskTracker/jobcache/job_200907151459_0096/job.xml > at > > org.apache.hadoop.fs.LocalDirAllocator$AllocatorPerContext.getLocalPathForWrite(LocalDirAllocator.java:335) > at > > org.apache.hadoop.fs.LocalDirAllocator.getLocalPathForWrite(LocalDirAllocator.java:124) > at > org.apache.hadoop.mapred.TaskTracker.localizeJob(TaskTracker.java:729) > at > org.apache.hadoop.mapred.TaskTracker.startNewTask(TaskTracker.java:1656) > at > org.apache.hadoop.mapred.TaskTracker.access$1200(TaskTracker.java:102) > at > > org.apache.hadoop.mapred.TaskTracker$TaskLauncher.run(TaskTracker.java:1621) > > 09/07/18 17:12:04 WARN mapred.JobClient: Error reading task > outputhttp:// > cn83.cloud.cs.illinois.edu:50003/tasklog?plaintext=true&taskid=attempt_200907151459_0096_m_000001_1&filter=stdout > 09/07/18<http://cn83.cloud.cs.illinois.edu:50003/tasklog?plaintext=true&taskid=attempt_200907151459_0096_m_000001_1&filter=stdout%0A09/07/18>17:12:04 > WARN mapred.JobClient: Error reading task > outputhttp:// > cn83.cloud.cs.illinois.edu:50003/tasklog?plaintext=true&taskid=attempt_200907151459_0096_m_000001_1&filter=stderr > > > After few error messages like this, the job fails. > > Thanks, > Akhil > > -- > View this message in context: > http://www.nabble.com/DiskErrorException-and-Error-reading-task-output-tp24552396p24552396.html > Sent from the Hadoop core-user mailing list archive at Nabble.com. > >
