[jira] [Commented] (WHIRR-663) HadoopProxy to support clusters without a namenode

["Steve Loughran (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WHIRR-663?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13461399#comment-13461399 ] 

Steve Loughran commented on WHIRR-663:
--------------------------------------

stack trace if you try it today
{code}
Caused by: java.util.NoSuchElementException
	at com.google.common.collect.AbstractIterator.next(AbstractIterator.java:154)
	at com.google.common.collect.Iterators.getOnlyElement(Iterators.java:360)
	at com.google.common.collect.Iterables.getOnlyElement(Iterables.java:270)
	at org.apache.whirr.Cluster.getInstanceMatching(Cluster.java:186)
	at org.apache.whirr.service.hadoop.HadoopCluster.getNamenodePublicAddress(HadoopCluster.java:39)
{code}
                
> HadoopProxy to support clusters without a namenode
> --------------------------------------------------
>
>                 Key: WHIRR-663
>                 URL: https://issues.apache.org/jira/browse/WHIRR-663
>             Project: Whirr
>          Issue Type: Improvement
>          Components: service/hadoop
>    Affects Versions: 0.8.1
>            Reporter: Steve Loughran
>            Priority: Minor
>
> the Proxy setup code in {{HadoopProxy}} only works in clusters with namenodes, which works for Hadoop itself; services like Hama squeeze by.
> Clusters without a NameNode can't, and are reduced to copy-and-paste work.
> A good solution would be for core to have a proxy setup class; HadoopProxy would be just a NN-specific subclass

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