[ https://issues.apache.org/jira/browse/MAPREDUCE-102?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Harsh J resolved MAPREDUCE-102. ------------------------------- Resolution: Not A Problem Not a problem anymore on any of the recent stable releases - and we've not seen this error appear again either. The methods that remove a tracker use proper locking today that seems to prevent this from occurring anymore. Gone stale, closing as 'Not a Problem' (anymore). > NPE in tracker expiry thread. > ----------------------------- > > Key: MAPREDUCE-102 > URL: https://issues.apache.org/jira/browse/MAPREDUCE-102 > Project: Hadoop Map/Reduce > Issue Type: Bug > Reporter: Vinod Kumar Vavilapalli > > I see NullPointerExceptions in Task Expiry thread of the JobTracker. > Exception log in JT: > {code} > 2009-02-28 07:22:51,392 ERROR org.apache.hadoop.mapred.JobTracker: Tracker > Expiry Thread got exception: java.lang.NullPointerException > {code} -- This message is automatically generated by JIRA. If you think it was sent incorrectly, please contact your JIRA administrators For more information on JIRA, see: http://www.atlassian.com/software/jira