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https://issues.apache.org/jira/browse/HDFS-4947?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13727840#comment-13727840
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Brandon Li commented on HDFS-4947:
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Looks like it's not trivial to get multiple names from a single IP with JDK 6
or 7.
Here is a workaround in case a user wants to give access to an IP with multiple
hostnames: he/she can give access to all hostnames of that IP in exports table.
Given the current patch is already >60K, I would suggest handling only single
hostname in this JIRA.
> Add NFS server export table to control export by hostname or IP range
> ---------------------------------------------------------------------
>
> Key: HDFS-4947
> URL: https://issues.apache.org/jira/browse/HDFS-4947
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: nfs
> Affects Versions: 3.0.0
> Reporter: Brandon Li
> Assignee: Jing Zhao
> Attachments: HDFS-4947.000.patch, HDFS-4947.001.patch,
> HDFS-4947.002.patch, HDFS-4947.003.patch
>
>
> This jira adds NFS server export table (hostname or IP range) to control
> export. Specifically, it
> 1. adds two new classes AccessPrivilege and ClientHostsMatcher for loading
> and checking the mapping between client hosts and their access privileges.
> These two classes are directly copied from Brock Noland's NFS4 implementation.
> 2. adds the access check (based on the export) to NFS3 procedures.
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