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From "Mohammad Kamrul Islam (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-6139) ConcurrentModificationException in ContainerLogAppender
Date Fri, 24 Oct 2014 20:48:35 GMT
Mohammad Kamrul Islam created MAPREDUCE-6139:
------------------------------------------------

             Summary: ConcurrentModificationException in ContainerLogAppender
                 Key: MAPREDUCE-6139
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-6139
             Project: Hadoop Map/Reduce
          Issue Type: Bug
            Reporter: Mohammad Kamrul Islam
            Assignee: Mohammad Kamrul Islam
            Priority: Critical


Context:

* Hadoop-2.3.0
* Using Oozie 4.0.1
* Pig version 0.11.x

The job is submitted by Oozie to launch Pig script.


The following exception traces were found on MR task log:

In syslog:
{noformat}
2014-10-24 20:37:29,317 WARN [Thread-5] org.apache.hadoop.util.ShutdownHookManager: ShutdownHook
'' failed, java.util.ConcurrentModificationException
java.util.ConcurrentModificationException
	at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966)
	at java.util.LinkedList$ListItr.next(LinkedList.java:888)
	at org.apache.hadoop.yarn.ContainerLogAppender.close(ContainerLogAppender.java:94)
	at org.apache.log4j.helpers.AppenderAttachableImpl.removeAllAppenders(AppenderAttachableImpl.java:141)
	at org.apache.log4j.Category.removeAllAppenders(Category.java:891)
	at org.apache.log4j.Hierarchy.shutdown(Hierarchy.java:471)
	at org.apache.log4j.LogManager.shutdown(LogManager.java:267)
	at org.apache.hadoop.mapred.TaskLog.syncLogsShutdown(TaskLog.java:286)
	at org.apache.hadoop.mapred.TaskLog$2.run(TaskLog.java:339)
	at org.apache.hadoop.util.ShutdownHookManager$1.run(ShutdownHookManager.java:54)
2014-10-24 20:37:29,395 INFO [main] org.apache.hadoop.metrics2.impl.MetricsSystemImpl: Stopping
MapTask metrics system...
{noformat}

in stderr:
{noformat}
java.util.ConcurrentModificationException
	at java.util.LinkedList$ListItr.checkForComodification(LinkedList.java:966)
	at java.util.LinkedList$ListItr.next(LinkedList.java:888)
	at org.apache.hadoop.yarn.ContainerLogAppender.close(ContainerLogAppender.java:94)
	at org.apache.log4j.helpers.AppenderAttachableImpl.removeAllAppenders(AppenderAttachableImpl.java:141)
	at org.apache.log4j.Category.removeAllAppenders(Category.java:891)
	at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:759)
	at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:648)
	at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:514)
	at org.apache.log4j.PropertyConfigurator.configure(PropertyConfigurator.java:440)
	at org.apache.pig.Main.configureLog4J(Main.java:740)
	at org.apache.pig.Main.run(Main.java:384)
	at org.apache.pig.PigRunner.run(PigRunner.java:49)
	at org.apache.oozie.action.hadoop.PigMain.runPigJob(PigMain.java:283)
	at org.apache.oozie.action.hadoop.PigMain.run(PigMain.java:223)
	at org.apache.oozie.action.hadoop.LauncherMain.run(LauncherMain.java:37)
	at org.apache.oozie.action.hadoop.PigMain.main(PigMain.java:76)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:483)
	at org.apache.oozie.action.hadoop.LauncherMapper.map(LauncherMapper.java:226)
	at org.apache.hadoop.mapred.MapRunner.run(MapRunner.java:54)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:430)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:342)
	at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:167)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:422)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
	at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:162)
{noformat}




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