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From "Eric Yang (JIRA)" <>
Subject [jira] Created: (CHUKWA-133) Demux crash with exception for using metrics class
Date Tue, 14 Apr 2009 20:29:15 GMT
Demux crash with exception for using metrics class

                 Key: CHUKWA-133
             Project: Hadoop Chukwa
          Issue Type: Bug
          Components: Data Processors
    Affects Versions: 0.1.2
         Environment: Redhat EL 5.1, Java 6
            Reporter: Eric Yang
            Assignee: Eric Yang
            Priority: Blocker

Looks like the demux job was unable to initialize MetricsContext class properly.  This is
linked to ChukImpl using Chukwa Agent to setTags.  CHUKWA-119.

This exception was thrown during demux:

14-Apr-2009 20:11:58 (30sec) java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
	at org.apache.hadoop.util.ReflectionUtils.newInstance(
	at org.apache.hadoop.mapred.SequenceFileRecordReader.createValue(
	at org.apache.hadoop.mapred.MapTask$TrackedRecordReader.createValue(
	at org.apache.hadoop.mapred.TaskTracker$Child.main(
Caused by: java.lang.reflect.InvocationTargetException
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(
	at java.lang.reflect.Constructor.newInstance(
	at org.apache.hadoop.util.ReflectionUtils.newInstance(
	... 5 more
Caused by: java.lang.NoClassDefFoundError: org/apache/hadoop/metrics/util/MetricsRegistry
	at org.apache.hadoop.chukwa.datacollection.agent.metrics.AgentMetrics.(
	at org.apache.hadoop.chukwa.datacollection.agent.metrics.AgentMetrics.(
	at org.apache.hadoop.chukwa.datacollection.agent.ChukwaAgent.(
	at org.apache.hadoop.chukwa.ChunkImpl.(
	... 10 more
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.metrics.util.MetricsRegistry
	at Method)
	at java.lang.ClassLoader.loadClass(
	at sun.misc.Launcher$AppClassLoader.loadClass(
	at java.lang.ClassLoader.loadClass(
	at java.lang.ClassLoader.loadClassInternal(
	... 14 more

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