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https://issues.apache.org/jira/browse/ACCUMULO-3923?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15308710#comment-15308710
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Christopher Tubbs commented on ACCUMULO-3923:
---------------------------------------------

The accumulo-gc jar contains a KeywordExecutable to provide the "gc" keyword. 
If you follow the instructions in the blog post to put that jar in HDFS, and 
make sure it's not anywhere else in the classpath locally, you'd just need to 
run {{bin/accumulo}} and make sure "gc" is still in the list of keywords 
described in the usage/help.

> VFS ClassLoader doesnt' work with KeywordExecutable
> ---------------------------------------------------
>
>                 Key: ACCUMULO-3923
>                 URL: https://issues.apache.org/jira/browse/ACCUMULO-3923
>             Project: Accumulo
>          Issue Type: Bug
>            Reporter: Josh Elser
>            Priority: Critical
>             Fix For: 1.7.2, 1.8.0
>
>
> Trying to make the VFS classloading stuff work and it doesn't seem like 
> ServiceLoader is finding any of the KeywordExecutable implementations.
> Best I can tell after looking into this, VFSClassLoader (created by 
> AccumuloVFSClassLoader) has all of the jars listed as resources, but when 
> ServiceLoader tries to find the META-INF/services definitions, it returns 
> nothing, and thus we think the keyword must be a class name. Seems like a 
> commons-vfs bug.



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