[jira] [Commented] (WHIRR-214) Add nodes to running clusters

["Tom White (Commented) (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WHIRR-214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13125320#comment-13125320 ] 

Tom White commented on WHIRR-214:
---------------------------------

The refactoring patch looks good, although I don't see the addInstance() method being used anywhere (even in the other patch).

Would "repair" be better named "converge", since it covers both cases of repairing a cluster where some of the instances didn't come up, and extending a cluster to a larger size. We could add shrinking a cluster sometime, but for the moment it should throw an exception.

The patch contains a default for the tarball URL, which would be better put in a properties file.
                
> Add nodes to running clusters
> -----------------------------
>
>                 Key: WHIRR-214
>                 URL: https://issues.apache.org/jira/browse/WHIRR-214
>             Project: Whirr
>          Issue Type: New Feature
>            Reporter: Elliott Clark
>         Attachments: WHIRR-214-refactoring-1.patch, WHIRR-214-zookeeeper-only.patch, zookeeper-repair-or-extend-cluster.patch
>
>
> I would like to be able to add a node to a running cluster.
> For example if I have created a hadoop, hbase, zookeeper cluster I would like to be able to add region servers to hbase,  Zookeeper nodes to the quorum,  and task nodes to hadoop.
> Something akin to the functionality of the hbase-ec2 script.  Where if I launch a node on an already running cluster.  It is configured to join the cluster.

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