Github user harshach commented on the pull request:
https://github.com/apache/incubator-storm/pull/166#issuecomment-49237484
@revans2 Thanks for the feedback. Regarding caching methods in the
interface these are provided for potential plugins which might be fetching
group info from ldap or active directory and can add caching to those calls.
Regarding ShellProcess I will work in integrating that into ShellUtils.
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