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https://issues.apache.org/jira/browse/HDFS-5523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14364152#comment-14364152
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Zhe Zhang commented on HDFS-5523:
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Thanks [~brandonli] for the thoughts.
bq. 1. if there are multiple exports, each export may need an access setting
like that in Linux export table
Agreed; this is one of the motivations of allowing multiple exports
bq. 2. do we want to allow exporting both a directory and its subdirectory,
e.g., export /a and /a/b?
This is theoretically useful, but we don't see a clear use case yet. We should
probably disallow nesting in this phase.
bq. 3. if the exports are not allowed to be nested, do we want to allow users
to mount the subdirectory of the export? e.g., the export is /a, can user mount
/a/b even /a/b is not in the export table?
I think we should allow mounting a non-top-level directory.
> Support multiple subdirectory exports in HDFS NFS gateway
> ----------------------------------------------------------
>
> Key: HDFS-5523
> URL: https://issues.apache.org/jira/browse/HDFS-5523
> Project: Hadoop HDFS
> Issue Type: New Feature
> Components: nfs
> Reporter: Brandon Li
>
> Currently, the HDFS NFS Gateway only supports configuring a single
> subdirectory export via the {{dfs.nfs3.export.point}} configuration setting.
> Supporting multiple subdirectory exports can make data and security
> management easier when using the HDFS NFS Gateway.
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