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From "Sangjin Lee (JIRA)" <j...@apache.org>
Subject [jira] [Created] (YARN-2245) AM throws ClassNotFoundException with job classloader enabled if custom output format/committer is used
Date Wed, 02 Jul 2014 05:08:24 GMT
Sangjin Lee created YARN-2245:
---------------------------------

             Summary: AM throws ClassNotFoundException with job classloader enabled if custom
output format/committer is used
                 Key: YARN-2245
                 URL: https://issues.apache.org/jira/browse/YARN-2245
             Project: Hadoop YARN
          Issue Type: Bug
    Affects Versions: 2.4.0
            Reporter: Sangjin Lee
            Assignee: Sangjin Lee


With the job classloader enabled, the MR AM throws ClassNotFoundException if a custom output
format class is specified.

{noformat}
org.apache.hadoop.yarn.exceptions.YarnRuntimeException: java.lang.RuntimeException: java.lang.ClassNotFoundException:
Class com.foo.test.TestOutputFormat not found
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.createOutputCommitter(MRAppMaster.java:473)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceInit(MRAppMaster.java:374)
	at org.apache.hadoop.service.AbstractService.init(AbstractService.java:163)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster$1.run(MRAppMaster.java:1459)
	at java.security.AccessController.doPrivileged(Native Method)
	at javax.security.auth.Subject.doAs(Subject.java:415)
	at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1548)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.initAndStartAppMaster(MRAppMaster.java:1456)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.main(MRAppMaster.java:1389)
Caused by: java.lang.RuntimeException: java.lang.ClassNotFoundException: Class com.foo.test.TestOutputFormat
not found
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1895)
	at org.apache.hadoop.mapreduce.task.JobContextImpl.getOutputFormatClass(JobContextImpl.java:222)
	at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.createOutputCommitter(MRAppMaster.java:469)
	... 8 more
Caused by: java.lang.ClassNotFoundException: Class com.foo.test.TestOutputFormat not found
	at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:1801)
	at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1893)
	... 10 more
{noformat}



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