Github user harshach commented on the pull request:
https://github.com/apache/incubator-storm/pull/166#issuecomment-49674242
@revans2 I added caching to ShellBasedUnixGroupsMapping class using
TimeCacheMap with a config option. I removed caching related apis from the
interface as you suggested didn't feel they are useful while implementing the
above caching.
Is it ok if I do the merge for ShellProcess and ShellUtils in another JIRA.
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