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https://issues.apache.org/jira/browse/HDFS-15785?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Leon Gao resolved HDFS-15785.
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Resolution: Fixed
> 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
> Priority: Major
> Labels: pull-request-available
> Time Spent: 4h 10m
> Remaining Estimate: 0h
>
> 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 on all datanodes. 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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