Hi, take a look into the logs for the failed attempt at your Tasktracker. Also check the system logs with dmesg or /var/log/kern*. Could be a syskill (segfault).
- Alex On Fri, Dec 23, 2011 at 3:32 PM, anthony garnier <[email protected]> wrote: > > Hi folks, > > I've just done a fresh install of Hadoop, Namenode and datanode are up, > Task/job Tracker also up, but when I run the Map reduce worcount exemple I > got this error on Task tracker: > > 2011-12-23 15:11:52,679 INFO org.apache.hadoop.mapred.JvmManager: JVM : > jvm_201112231511_0001_m_-1653678851 exited with exit code 134. Number of > tasks it ran: 0 > 2011-12-23 15:11:52,681 WARN org.apache.hadoop.mapred.TaskRunner: > attempt_201112231511_0001_m_000002_0 : Child Error > java.io.IOException: Task process exit with nonzero status of 134. > at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:258) > > And job tracker stuck : > # hadoop jar hadoop-examples*.jar wordcount input/test.txt output/ > 11/12/23 15:11:48 INFO input.FileInputFormat: Total input paths to process : 1 > 11/12/23 15:11:49 INFO mapred.JobClient: Running job: job_201112231511_0001 > 11/12/23 15:11:50 INFO mapred.JobClient: map 0% reduce 0% > > > I'running hadoop 0.20.203.0, java 1.6.0 rev 25 > > I've done some googling, apparently the JVM crash hard (maybe Out of memory), > does someone have any hint ? > > Regards, > > Anthony Garnier > /DSIN/ASTI/ETSO > IT Center > PSA Peugeot Citroen > Bessoncourt 90160 > > > > -- Alexander Lorenz http://mapredit.blogspot.com P Think of the environment: please don't print this email unless you really need to.
