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https://issues.apache.org/jira/browse/HDFS-8500?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zhang Wei resolved HDFS-8500.
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Resolution: Not A Problem
$HADOOP_PREFIX/sbin/refresh-namenodes.sh is appropriate choice.
> Improve refreshNodes in DFSAdmin to support hdfs federation
> -----------------------------------------------------------
>
> Key: HDFS-8500
> URL: https://issues.apache.org/jira/browse/HDFS-8500
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: federation
> Affects Versions: 2.7.0
> Reporter: Zhang Wei
> Assignee: Zhang Wei
> Priority: Minor
> Labels: decommission, federation, refreshnodes
>
> In hdfs federated cluster, we find the dfsadmin command "hdfs dfsadmin
> -refreshNodes" can only refresh the nameservice (or namenode) which
> configured in fs.defaultFS. The other nameservices configured in
> hdfs-site.xml can't be refreshed unless changing the fs.defaultFS value and
> run this command again. I think we need additional parameters as following to
> give a convenient way:
> [-a] fresh all namenodes configured in hdfs-site.xml.
> [-ns <nameserviceId>] specify a nameservice to refresh.
> [host:ipc_port] specify a nn to refresh.
> please give your opinions. Thanks!
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