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Date: Thu, 29 May 2014 08:58:01 +0000 (UTC)
From: "Dian Fu (JIRA)" <jira@apache.org>
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Subject: [jira] [Created] (HDFS-6465) Enable the configuration of multiple
 clusters
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Dian Fu created HDFS-6465:
-----------------------------

             Summary: Enable the configuration of multiple clusters
                 Key: HDFS-6465
                 URL: https://issues.apache.org/jira/browse/HDFS-6465
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Dian Fu
            Assignee: Dian Fu


Tracks the changes required for configuration DR.
configurations added:
    DFS_REGION_ID("dfs.region.id") : the region id of current cluster
    DFS_REGIONS("dfs.regions") : the region ids of all clusters, including both the primary cluster and mirror cluster
    DFS_REGION_PRIMARY("dfs.region.primary") : the region id of primary cluster

configurations modified:
    The configurations in NAMENODE.NAMENODE_SPECIFIC_KEYS can be configured in the following format to distinguish between clusters.
    If a configuration with a region id as suffix cannot be found, the configuration without region id as suffix will be used instead:
    <configuration key>.<nameservice id>.<namenode id>.<region id>

The configurations in NAMENODE.NAMESERVICE_SPECIFIC_KEYS can be configured in the following format to distinguish between clusters.
If a configuration with a region id as suffix cannot be found, the configuration without region id as suffix will be used instead:
<configuration key>.<nameservice id>.<region id>



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