[MAPREDUCE-5260] Job failed because of JvmManager running into inconsistent state

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.2
• Fix Version/s: 1.2.1
• Component/s: tasktracker
• Assignee: yunjiong zhao
• Reporter: yunjiong zhao
• Created: 20/May/13 05:43
• Updated: 04/Aug/13 08:23
• Resolved: 28/Jun/13 20:55

Description

In our cluster, jobs failed due to randomly task initialization failed because of JvmManager running into inconsistent state and TaskTracker failed to exit:

java.lang.Throwable: Child Error
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.getDetails(JvmManager.java:402)
at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.reapJvm(JvmManager.java:387)
at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.access$000(JvmManager.java:192)
at org.apache.hadoop.mapred.JvmManager.launchJvm(JvmManager.java:125)
at org.apache.hadoop.mapred.TaskRunner.launchJvmAndWait(TaskRunner.java:292)
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:251)

-------
java.lang.Throwable: Child Error
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:271)
Caused by: java.lang.NullPointerException
at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.getDetails(JvmManager.java:402)
at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.reapJvm(JvmManager.java:387)
at org.apache.hadoop.mapred.JvmManager$JvmManagerForType.access$000(JvmManager.java:192)
at org.apache.hadoop.mapred.JvmManager.launchJvm(JvmManager.java:125)
at org.apache.hadoop.mapred.TaskRunner.launchJvmAndWait(TaskRunner.java:292)
at org.apache.hadoop.mapred.TaskRunner.run(TaskRunner.java:251)

Issue Links

• is related to: MAPREDUCE-1397 NullPointerException observed during task failures