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From "Nate Cole (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (AMBARI-2916) DataNode cannot be started on a host that was added post-install
Date Fri, 16 Aug 2013 12:53:48 GMT

    [ https://issues.apache.org/jira/browse/AMBARI-2916?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13742175#comment-13742175
] 

Nate Cole commented on AMBARI-2916:
-----------------------------------

No tests for patch - it's only removing the whitelist property.
                
> DataNode cannot be started on a host that was added post-install
> ----------------------------------------------------------------
>
>                 Key: AMBARI-2916
>                 URL: https://issues.apache.org/jira/browse/AMBARI-2916
>             Project: Ambari
>          Issue Type: Task
>          Components: client
>    Affects Versions: 1.4.0
>            Reporter: Nate Cole
>            Assignee: Nate Cole
>             Fix For: 1.4.0
>
>         Attachments: AMBARI-2916.patch
>
>
> The properties for hdfs-site/dfs.hosts and hdfs-site/dfs.hosts.exclude are generated
on install (and config change).  When creating a datanode post-install, the files get updated,
but requires a restart of the NN in order to for it to read the new entry.  In a normal install,
DN should be able to register themselves without any restart.

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