Pl check which nodes have these failures.
I guess the new tasktrackers/machines are not configured correctly.
As a result, the map-task will die and the remaining map-tasks will be
sucked onto these machines
-Sagar
David J. O'Dell wrote:
We've been running 0.18.2 for over a month on an 8 node cluster.
Last week we added 4 more nodes to the cluster and have experienced 2
failures to the tasktrackers since then.
The namenodes are running fine but all jobs submitted will die when
submitted with this error on the tasktrackers.
2009-01-28 08:07:55,556 INFO org.apache.hadoop.mapred.TaskTracker:
LaunchTaskAction: attempt_200901280756_0012_m_000074_2
2009-01-28 08:07:55,682 WARN org.apache.hadoop.mapred.TaskRunner:
attempt_200901280756_0012_m_000074_2 Child Error
java.io.IOException: Task process exit with nonzero status of 1.
at org.apache.hadoop.mapred.TaskRunner.runChild(TaskRunner.java:462)
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:403)
I tried running the tasktrackers in debug mode but the entries above are
all that show up in the logs.
As of now my cluster is down.
