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[ https://issues.apache.org/jira/browse/HDFS-1649?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jitendra Nath Pandey resolved HDFS-1649.
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Resolution: Fixed
Hadoop Flags: [Reviewed]

I have committed this.
Federation: Datanode command to refresh namenode list at the datanode.
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Key: HDFS-1649
URL: https://issues.apache.org/jira/browse/HDFS-1649
Project: Hadoop HDFS
Issue Type: Sub-task
Affects Versions: Federation Branch
Reporter: Jitendra Nath Pandey
Assignee: Jitendra Nath Pandey
Fix For: Federation Branch

Attachments: HDFS-1649.1.patch, HDFS-1649.2.patch, HDFS-1649.4.patch


When a namenode is added to or removed from a cluster, we need a way to refresh the datanodes:
1. Datanode should load new configuration.
2. Compares the namenode list it has with that of new configuration. If a namenode is deleted, then corresponding
BPOfferService thread is shutdown. If a new namenode is added, a BPOfferService thread is started to service the new
namenode.
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postedFeb 25, '11 at 12:52a
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