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https://issues.apache.org/jira/browse/WHIRR-195?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12987847#action_12987847
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Tom White commented on WHIRR-195:
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I'm not sure we need the (publicly visible) ClusterActionHandlerFactory class.
How about having the role sort code in Main (since that is the only place it's
used), and just call ServiceLoader.load() as needed?
> Display available roles instead of service names when running ./bin/whirr
> -------------------------------------------------------------------------
>
> Key: WHIRR-195
> URL: https://issues.apache.org/jira/browse/WHIRR-195
> Project: Whirr
> Issue Type: Improvement
> Components: cli
> Reporter: Andrei Savu
> Priority: Minor
> Attachments: WHIRR-195.patch, WHIRR-195.patch
>
>
> Now that service-name is optional I believe that we should display a list of
> the available roles (with a small description) instead of service names.
> Similar to:
> {code}
> $ ./bin/whirr
> Usage: whirr COMMAND [ARGS]
> where COMMAND may be one of:
> version Print the version number and exit.
> launch-cluster Launch a new cluster running a service.
> destroy-cluster Terminate and cleanup resources for a running cluster.
> list-cluster List the nodes in a cluster.
> Available roles for instances:
> nn hadoop name node
> jt hadoop job trackers
> ...
> {code}
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