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https://issues.apache.org/jira/browse/HDFS-12292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16158366#comment-16158366
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Mikhail Erofeev commented on HDFS-12292:
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HI [~msingh], [~vagarychen], [~xkrogen], it's been a while since the last
update, don't you mind to take a look at my patch again, please?
Thank you!
> Federation: Support viewfs:// schema path for DfsAdmin commands
> ---------------------------------------------------------------
>
> Key: HDFS-12292
> URL: https://issues.apache.org/jira/browse/HDFS-12292
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: federation
> Reporter: Mikhail Erofeev
> Assignee: Mikhail Erofeev
> Attachments: HDFS-12292-002.patch, HDFS-12292-003.patch,
> HDFS-12292-004.patch, HDFS-12292.patch
>
>
> Motivation:
> As of now, clients need to specify a nameservice when a cluster is federated,
> otherwise, the exception is fired:
> {code}
> hdfs dfsadmin -setQuota 10 viewfs://vfs-root/user/uname
> setQuota: FileSystem viewfs://vfs-root/ is not an HDFS file system
> # with fs.defaultFS = viewfs://vfs-root/
> hdfs dfsadmin -setQuota 10 vfs-root/user/uname
> setQuota: FileSystem viewfs://vfs-root/ is not an HDFS file system
> # works fine thanks to https://issues.apache.org/jira/browse/HDFS-11432
> hdfs dfsadmin -setQuota 10 hdfs://users-fs/user/uname
> {code}
> This creates inconvenience, inability to rely on fs.defaultFS and forces to
> create client-side mappings for management scripts
> Implementation:
> PathData that is passed to commands should be resolved to its actual
> FileSystem
> Result:
> ViewFS will be resolved to the actual HDFS file system
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