Leon Gao created HDFS-15785:
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Summary: Datanode to support using DNS to resolve nameservices to
IP addresses to get list of namenodes
Key: HDFS-15785
URL: https://issues.apache.org/jira/browse/HDFS-15785
Project: Hadoop HDFS
Issue Type: Improvement
Components: datanode
Reporter: Leon Gao
Assignee: Leon Gao
Currently as HDFS supports observers, multiple-standby and router, the namenode
hosts are changing frequently in large deployment, we can consider supporting
https://issues.apache.org/jira/browse/HDFS-14118 on datanode to reduce the need
to update config frequently. In that case, datanode and clients can use the
same set of config as well.
Basically we can resolve the DNS and generate namenode for each IP behind it.
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