AnsweredAssumed Answered

Tasks failing with following error continuously

Question asked by siddharth1988 on May 19, 2013
Latest reply on May 19, 2013 by nabeel
Hi My map tasks fail with these errors :-

<code>
Error initializing attempt_201304091120_85011_m_000082_0: java.io.IOException: Job initialization failed (255). with output: Reading task controller config from /opt/mapr/hadoop/hadoop-0.20.2/conf/taskcontroller.cfg
number of groups = 8
main : command provided 0
main : user is czhan4
number of groups = 4
Can't open /tmp/mapr-hadoop/mapred/local/taskTracker/czhan4/jobcache/job_201304091120_85011/jobToken for output - File exists failed to copy credential file at org.apache.hadoop.mapred.LinuxTaskController.initializeJob(LinuxTaskController.java:195) at org.apache.hadoop.mapred.TaskTracker$4.run(TaskTracker.java:1564) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127) at org.apache.hadoop.mapred.TaskTracker.initializeJob(TaskTracker.java:1540) at org.apache.hadoop.mapred.TaskTracker.localizeJob(TaskTracker.java:1425) at org.apache.hadoop.mapred.TaskTracker$6.run(TaskTracker.java:3810) Caused by: org.apache.hadoop.util.Shell$ExitCodeException: at org.apache.hadoop.util.Shell.runCommand(Shell.java:322) at org.apache.hadoop.util.Shell.run(Shell.java:249) at org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:442) at org.apache.hadoop.mapred.LinuxTaskController.initializeJob(LinuxTaskController.java:188)

</code>
Please help. Why am I getting these errors ?

Outcomes