[HADOOP-593] NullPointerException in JobTracker's ExireTaskTracker thread

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.7.0
• Fix Version/s: 0.7.1
• Assignee: Owen O'Malley
• Reporter: Owen O'Malley
• Created: 10/Oct/06 19:00
• Updated: 08/Jul/09 16:51
• Resolved: 11/Oct/06 17:50

Description

The JobTracker's thread that finds dead task trackers is getting a NullPointerException:

Exception in thread "Thread-19" java.lang.NullPointerException
at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:614)
at org.apache.hadoop.mapred.JobInProgress.updateTaskStatus(JobInProgress.java:291)
at org.apache.hadoop.mapred.JobInProgress.failedTask(JobInProgress.java:674)
at org.apache.hadoop.mapred.JobTracker.lostTaskTracker(JobTracker.java:1204)
at org.apache.hadoop.mapred.JobTracker$ExpireTrackers.run(JobTracker.java:225)
at java.lang.Thread.run(Thread.java:595)

Which kills the thread and prevents any other task trackers from being killed.