[HDFS-6465] Support "region" in HDFS configurations

• Type: Sub-task
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Assignee: Dian Fu
• Reporter: Dian Fu
• Created: 29/May/14 08:57
• Updated: 19/Jun/14 10:04

Description

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>