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From "Todd Lipcon (Resolved) (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (HDFS-2934) HA: Allow configs to be scoped to all NNs in the nameservice
Date Wed, 15 Feb 2012 22:20:00 GMT

     [ https://issues.apache.org/jira/browse/HDFS-2934?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Todd Lipcon resolved HDFS-2934.

       Resolution: Fixed
    Fix Version/s: HA branch (HDFS-1623)
     Hadoop Flags: Reviewed

Thanks for the review. I addressed the nits on commit.
> HA: Allow configs to be scoped to all NNs in the nameservice
> ------------------------------------------------------------
>                 Key: HDFS-2934
>                 URL: https://issues.apache.org/jira/browse/HDFS-2934
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>            Priority: Minor
>             Fix For: HA branch (HDFS-1623)
>         Attachments: hdfs-2934.txt
> Currently, for namenode-specific keys in HA, one must configure them as keyfoo.nameserviceid.namenodeid.
However, in many cases all of the NNs in a nameservice would share the same value. So we should
allow the configuration of "keyfoo.nameserviceid" to apply to all NNs. The resolution path
for these keys would then be:
> keyfoo.nameserviceid.nnid
> keyfoo.nameserviceid (if above not set)
> keyfoo (if neither of above set)

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