FAQ
Parameter dfs.namenode.rpc-address does not get used when determining RPC address of NameNode
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Key: HDFS-2615
URL: https://issues.apache.org/jira/browse/HDFS-2615
Project: Hadoop HDFS
Issue Type: Bug
Components: name-node
Affects Versions: 0.24.0
Reporter: David Robson


When the NameNode is started it listens on two addresses. One defined by "dfs.namenode.servicerpc-address" and the other is derived from fs.defaultFS. It seems like it should check to see if "dfs.namenode.rpc-address" is set to match how getServiceRpcServerAddress.
I have written a patch which updates getRpcServerAddress to achieve this. This means you can set fs.defaultFS to hdfs://hostname/ then set dfs.namenode.rpc-address to 0.0.0.0:8020 and the NameNode will listen on all IP addresses on that machine.

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