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From "Steve Loughran (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (MAPREDUCE-3965) JobConf.findContainingJar NPEs if it can't find the classloader of a class
Date Sat, 03 Mar 2012 14:07:57 GMT
JobConf.findContainingJar NPEs if it can't find the classloader of a class
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                 Key: MAPREDUCE-3965
                 URL: https://issues.apache.org/jira/browse/MAPREDUCE-3965
             Project: Hadoop Map/Reduce
          Issue Type: Bug
         Environment: Setting up a job under Groovy
            Reporter: Steve Loughran
            Priority: Minor


I never knew that classes may not have classloaders, but it turns out they can -in which case
Object.getClass().getClassLoader() will be null "This method will return null in such implementations
if this class was loaded by the bootstrap class loader.""

When this (rare) situation arises, {{JobConf.findContainingJar()}} NPEs, when failing with
a slightly more useful error message would be preferred.


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