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Posted to hdfs-issues@hadoop.apache.org by "Mukul Kumar Singh (JIRA)" <ji...@apache.org> on 2017/10/01 18:47:00 UTC
[jira] [Comment Edited] (HDFS-11575) Supporting HDFS NFS gateway
with Federated HDFS
[ https://issues.apache.org/jira/browse/HDFS-11575?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16187492#comment-16187492 ]
Mukul Kumar Singh edited comment on HDFS-11575 at 10/1/17 6:47 PM:
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The latest patch fixes the issue with {{resolvePath}} in the last patch, in the new patch for {{ViewFileSystem}} the path conversion is done by reading the entries in the ViewFileSystem.
[~jnp] Please have a look at the latest patch.
was (Author: msingh):
The latest patch fixes the issue with {{resolvePath}} in the last patch, in the new patch for {{ViewFileSystem}} the path conversion is done by reading the entries in the ViewFileSystem.
> Supporting HDFS NFS gateway with Federated HDFS
> -----------------------------------------------
>
> Key: HDFS-11575
> URL: https://issues.apache.org/jira/browse/HDFS-11575
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: nfs
> Reporter: Mukul Kumar Singh
> Assignee: Mukul Kumar Singh
> Attachments: HDFS-11575.001.patch, HDFS-11575.002.patch, HDFS-11575.003.patch, HDFS-11575.004.patch, HDFS-11575.005.patch, HDFS-11575.006.patch, HDFS-11575.007.patch, HDFS-11575.008.patch, HDFS-11575.009.patch, SupportingNFSwithFederatedHDFS.pdf
>
>
> Currently HDFS NFS gateway only supports HDFS as the underlying filesystem.
> Federated HDFS with ViewFS helps in improving the scalability of the name nodes. However NFS is not supported with ViewFS.
> With this change, ViewFS using HDFS as the underlying filesystem can be exported using NFS. ViewFS mount table will be used to determine the exports which needs to be supported.
> Some important points
> 1) This patch only supports HDFS as the underlying filesystem for ViewFS.
> 2) This patch add support to add more than one export point in the NFS gateway
> 3) Root filesystem of the ViewFS will not be mountable for NFS gateway with ViewFS,
> however this will not be the case for NFS gateway with HDFS
> 4) A filehandle now apart from the field will also contain an identifier to identify the name node, this will be used to map to correct name node for file operations.
> Please find the attached pdf document which helps in explaining the design and the solution.
>
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