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https://issues.apache.org/jira/browse/HDFS-2231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13080506#comment-13080506
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Rajiv Chittajallu commented on HDFS-2231:
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{quote}
Rather than having to xmlinclude a separate file with the NN's ID, can we allow
the user to just use the local hostname? eg set the default to
$\{env.hostname\} or some such, and have it get substituted?
{quote}
Physical hosts serving the primary and backup service might change during the
lifetime of the cluster. Using hostname(1) or hostid(1) might work but it not
advisable, in production sites, as it might require a configuration refresh
when the physical host is replaced.
> Configuration changes for HA namenode
> -------------------------------------
>
> Key: HDFS-2231
> URL: https://issues.apache.org/jira/browse/HDFS-2231
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Reporter: Suresh Srinivas
> Assignee: Suresh Srinivas
> Fix For: HA branch (HDFS-1623)
>
>
> This jira tracks the changes required for configuring HA setup for namenodes.
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