Hadoop 0.20.2
There are a couple of jobs need to be executed one by one, and some attempt job's JVM can't be killed. Logs below. It seems like the tasktracker can't find the JVMId if you see "JVM Not killed jvm_201208192339_6873_m_1286217329 but just removed". I have seen the source code. But I can't find out the reason why the tasktracker can't find the JVMId. By the way, there are 13 tasktrakers, and only the new 3 of them got this problem, did I forget to configure something? Somebody help me find the reason? Thanks. ^O^
2012-09-20 13:52:56,655 INFO org.apache.hadoop.mapred.TaskTracker: Received KillTaskAction for task: attempt_201208192339_6873_m_004334_0
2012-09-20 13:52:56,655 INFO org.apache.hadoop.mapred.TaskTracker: About to purge task: attempt_201208192339_6873_m_004334_0
2012-09-20 13:52:56,655 INFO org.apache.hadoop.mapred.JvmManager: JVM Not killed jvm_201208192339_6873_m_1286217329 but just removed
2012-09-20 13:52:56,655 INFO org.apache.hadoop.mapred.TaskTracker: addFreeSlot : current free slots : 8
2012-09-20 13:52:56,655 INFO org.apache.hadoop.mapred.IndexCache: Map ID attempt_201208192339_6873_m_004334_0 not found in cache
2012-09-20 13:52:56,962 INFO org.apache.hadoop.mapred.TaskTracker: LaunchTaskAction (registerTask): attempt_201208192339_6873_m_004334_0 task's state:KILLED_UNCLEAN
2012-09-20 13:52:56,962 INFO org.apache.hadoop.mapred.TaskTracker: Trying to launch : attempt_201208192339_6873_m_004334_0 which needs 1 slots
2012-09-20 13:52:56,962 INFO org.apache.hadoop.mapred.TaskTracker: In TaskLauncher, current free slots : 8 and trying to launch attempt_201208192339_6873_m_004334_0 which needs 1 slots
2012-09-20 13:52:56,968 INFO org.apache.hadoop.mapred.JvmManager: In JvmRunner constructed JVM ID: jvm_201208192339_6873_m_677724590
2012-09-20 13:52:56,968 INFO org.apache.hadoop.mapred.JvmManager: JVM Runner jvm_201208192339_6873_m_677724590 spawned.
2012-09-20 13:52:56,974 INFO org.apache.hadoop.mapred.TaskController: Writing commands to /disk10/hdfs/mapred/local/ttprivate/taskTracker/root/jobcache/job_201208192339_6873/attempt_201208192339_6873_m_004334_0.cleanup/taskjvm.sh
2012-09-20 13:52:58,017 INFO org.apache.hadoop.mapred.TaskTracker: JVM with ID: jvm_201208192339_6873_m_677724590 given task: attempt_201208192339_6873_m_004334_0
2012-09-20 13:52:58,557 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201208192339_6873_m_004334_0 0.0%
2012-09-20 13:52:58,564 INFO org.apache.hadoop.mapred.TaskTracker: attempt_201208192339_6873_m_004334_0 0.0% cleanup
2012-09-20 13:52:58,566 INFO org.apache.hadoop.mapred.TaskTracker: Task attempt_201208192339_6873_m_004334_0 is done.
2012-09-20 13:52:58,566 INFO org.apache.hadoop.mapred.TaskTracker: reported output size for attempt_201208192339_6873_m_004334_0 was -1
2012-09-20 13:52:58,566 INFO org.apache.hadoop.mapred.TaskTracker: addFreeSlot : current free slots : 8
