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https://issues.apache.org/jira/browse/WHIRR-221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13140491#comment-13140491
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Andrei Savu commented on WHIRR-221:
-----------------------------------
How about having an annotation on the role action handler methods?
{code}
@RunBefore(roles = {"hbase-master", "hadoop-namenode", "my-custom-app"})
@Override
protected void beforeConfigure(ClusterActionEvent event) throws IOException {
....
}
{code}
and some extra methods like before/afterStart, before/afterStop,
before/afterCleanup? (I will open another JIRA)
> Optionally control the order of starting services
> -------------------------------------------------
>
> Key: WHIRR-221
> URL: https://issues.apache.org/jira/browse/WHIRR-221
> Project: Whirr
> Issue Type: New Feature
> Components: core, documentation
> Reporter: Andrei Savu
> Assignee: Andrei Savu
> Priority: Critical
> Attachments: WHIRR-221-v1.patch, WHIRR-221-v3.patch, WHIRR-221.patch
>
>
> As Lars sugested in WHIRR-170:
> The user should "be able to optionally control the order (services start).
> This could be role based and specified like so
> {code}
> whirr.role-order=zk,nn+jt,dn+tt,hbase-master,hbase-regionserver
> {code}
> If not specified the system should make any effort to start the services as
> quickly as possible, for example in multiple threads. In other words, when
> the role-order is not given no guarantee about order can be given."
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