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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