[HDFS-1669] Federation: Datanode servlets need information about the namenode to service the request

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: Federation Branch
• Fix Version/s: Federation Branch
• Component/s: datanode, namenode
• Hadoop Flags: Reviewed
• Assignee: Suresh Srinivas
• Reporter: Suresh Srinivas
• Created: 28/Feb/11 17:45
• Updated: 01/Mar/11 04:38
• Resolved: 01/Mar/11 04:38

Description

Prior to federation datanode had only one namenode. In servlets hosted on datanode, a DFSClient was created to the only namenode to serve the request. However with federation datanode has multiple namenodes. When a request is redirected to a datanode, it does not know which namenode to use for servicing the request.

This results in TestHftpFileSystem failure.