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From "Suresh Srinivas (Updated) (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-2355) Federation: enable using the same configuration file across all the nodes in the cluster.
Date Wed, 28 Sep 2011 23:01:46 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2355?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Suresh Srinivas updated HDFS-2355:
----------------------------------

      Resolution: Fixed
    Release Note: This change allows when running multiple namenodes on different hosts, sharing
the same configuration file across all the nodes in the cluster (Datanodes, NamNode, BackupNode,
SecondaryNameNode), without the need to define dfs.federation.nameservice.id parameter.
          Status: Resolved  (was: Patch Available)
    
> Federation: enable using the same configuration file across all the nodes in the cluster.
> -----------------------------------------------------------------------------------------
>
>                 Key: HDFS-2355
>                 URL: https://issues.apache.org/jira/browse/HDFS-2355
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Suresh Srinivas
>            Assignee: Suresh Srinivas
>             Fix For: 0.24.0
>
>         Attachments: HDFS-2355.txt, HDFS-2355.txt
>
>
> In federation the configuration files xml include another configuration xml. This configuration
xml is empty for datanodes and defines nameservice ID for namenodes, secondary and backup
nodes. The need for xml include can be eliminated by namenodes determining the nameservice
ID by matching its local address with a configured address (such as namenode rpc address)
and on match using the nameservice ID of the corresponding configuration parameter.
> For more details about federation configuration see https://issues.apache.org/jira/browse/HDFS-1689?focusedCommentId=13001749&page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel#comment-13001749

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