[MAPREDUCE-1992] NPE in JobTracker's constructor

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.22.0
• Fix Version/s: 0.22.0
• Component/s: jobtracker
• Hadoop Flags: Reviewed
• Assignee: Kan Zhang
• Reporter: Ravi Gummadi
• Created: 03/Aug/10 08:30
• Updated: 12/Dec/11 06:18
• Resolved: 12/Aug/10 10:01

Description

On my local machine, JobTracker is not coming up with current trunk. Logs show the following NPE:

2010-08-03 14:01:41,449 FATAL org.apache.hadoop.mapred.JobTracker: java.lang.NullPointerException
at org.apache.hadoop.security.UserGroupInformation.isLoginKeytabBased(UserGroupInformation.java:703)
at org.apache.hadoop.mapred.JobTracker.<init>(JobTracker.java:1383)
at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:275)
at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:267)
at org.apache.hadoop.mapred.JobTracker.startTracker(JobTracker.java:262)
at org.apache.hadoop.mapred.JobTracker.main(JobTracker.java:4236)

2010-08-03 14:01:41,449 INFO org.apache.hadoop.mapred.JobTracker: SHUTDOWN_MSG:

Issue Links

• is related to: HADOOP-6912 Guard against NPE when calling UGI.isLoginKeytabBased()