[jira] Assigned: (WHIRR-199) Add aliases for short role names like nn, jt, tt, dn, zk

["Jakob Homan (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WHIRR-199?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jakob Homan reassigned WHIRR-199:
---------------------------------

    Assignee: Andrei Savu

> Add aliases for short role names like nn, jt, tt, dn, zk 
> ---------------------------------------------------------
>
>                 Key: WHIRR-199
>                 URL: https://issues.apache.org/jira/browse/WHIRR-199
>             Project: Whirr
>          Issue Type: Improvement
>          Components: service/hadoop, service/zookeeper
>            Reporter: Andrei Savu
>            Assignee: Andrei Savu
>            Priority: Minor
>         Attachments: WHIRR-199.patch
>
>
> Whirr support the following instance roles: dn, jt, nn, tt, zk, hbase-avroserver, hbase-master, hbase-regionserver, hbase-restserver, hbase-thriftserver and as you can see the naming is inconsistent and sometimes it's hard to guess the meaning. 
> Tom White replied on the email list:
> "The shorter names (nn, zk, etc) predate Whirr to when the roles were a part of the group name and had to be kept short to conform to various
> length restrictions. We do things differently now that we have multi-cloud support, so keeping them short is less important, and indeed with a global namespace (since service name is optional) there is even more reason to make them distinctive and unique. So I would suggest the longer, hyphenated form that we adopted for HBase, like hbase-regionserver; so the pattern is <service-name>-<daemon>.
> There's not much harm in keeping the shorter forms around, but we could introduce aliases like hadoop-namenode, zookeeper, etc and
> deprecate the short ones."

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