Devaraj K created YARN-303:
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Summary: ProcfsBasedProcessTree throws
ConcurrentModificationException
Key: YARN-303
URL: https://issues.apache.org/jira/browse/YARN-303
Project: Hadoop YARN
Issue Type: Bug
Affects Versions: 2.0.1-alpha, 3.0.0, 2.0.2-alpha
Reporter: Devaraj K
Assignee: Devaraj K
{code:xml}
Error: java.util.ConcurrentModificationException
at java.util.HashMap$HashIterator.nextEntry(HashMap.java:793)
at java.util.HashMap$EntryIterator.next(HashMap.java:834)
at java.util.HashMap$EntryIterator.next(HashMap.java:832)
at
org.apache.hadoop.yarn.util.ProcfsBasedProcessTree.getProcessTree(ProcfsBasedProcessTree.java:208)
at
org.apache.hadoop.yarn.util.LinuxResourceCalculatorPlugin.getProcResourceValues(LinuxResourceCalculatorPlugin.java:406)
at
org.apache.hadoop.mapred.Task.getCurrentProcResourceValues(Task.java:810)
at
org.apache.hadoop.mapred.BlockMapOutputBuffer.sortAndSpill(BlockMapOutputBuffer.java:235)
at
org.apache.hadoop.mapred.BlockMapOutputBuffer.flush(BlockMapOutputBuffer.java:322)
at
org.apache.hadoop.mapred.MapTask$NewOutputCollector.close(MapTask.java:677)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:745)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:333)
at org.apache.hadoop.mapred.YarnChild$2.run(YarnChild.java:154)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:396)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1232)
at org.apache.hadoop.mapred.YarnChild.main(YarnChild.java:149)
{code}
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