http://server:50030/jobtracker.jsp generates the following error message:
HTTP ERROR: 500 GC overhead limit exceeded RequestURI=/jobtracker.jsp Caused by: java.lang.OutOfMemoryError: GC overhead limit exceeded Powered by Jetty:// The jobtracker is running below the limit. But "hadoop job -status" seems to halt and does not response ... The last 2 lines of jobtracker logs: 2010-07-30 13:53:18,482 DEBUG org.apache.hadoop.mapred.JobTracker: Got heartbeat from: tracker_host1:localhost.localdomain/127.0.0.1:53914 (restarted: false initialContact: false acceptNewTasks: true) with responseId: -31252 2010-07-30 13:55:32,917 DEBUG org.apache.hadoop.mapred.JobTracker: Starting launching task sweep Any thought about this? Thanks! --Michael