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https://issues.apache.org/jira/browse/HDFS-2355?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13116680#comment-13116680
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Jitendra Nath Pandey commented on HDFS-2355:
--------------------------------------------
DFSUtil.java#getNameServiceId
- We should throw HadoopIllegalArgumentException if no match found?
Currently, no match found and non federation cases are treated as same.
Remove a System.out.println.
> 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
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Attachments: 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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