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From "Todd Lipcon (Created) (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HDFS-2934) HA: Allow configs to be scoped to all NNs in the nameservice
Date Fri, 10 Feb 2012 06:15:59 GMT
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


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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