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https://issues.apache.org/jira/browse/HDFS-5329?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tsz Wo (Nicholas), SZE updated HDFS-5329:
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Hadoop Flags: Reviewed
+1 patch looks good. Thanks, Brandon.
> Update FSNamesystem#getListing() to handle inode path in startAfter token
> -------------------------------------------------------------------------
>
> Key: HDFS-5329
> URL: https://issues.apache.org/jira/browse/HDFS-5329
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Reporter: Brandon Li
> Assignee: Brandon Li
> Attachments: HDFS-5329.1.patch, HDFS-5329.2.patch, HDFS-5329.3.patch,
> HDFS-5329.4.patch, HDFS-5329.5.patch, HDFS-5329.patch
>
>
> This is to support network protocols which can't use file name as the token
> to resume directory listing.
> NFS gateway doesn't know the name of startAfter and has to use inode id
> instead. NFS protocol uses readdir and readdirplus to list directory content.
> In the response, each dirent has an 8-byte number verifier.
> To list the content of large directories, NFS client sends multiple readdir
> or readdirplus requests to NFS gateway with one verifier(resume point) in the
> request. The verifier is basically of the same usage as "startAfter" in
> getListing. Since NFSv3 uses file handle to communicate and doesn't know the
> file name. NFS gateway has to use the inode id path as "startAfter" when
> sending getList request to NN, however NN currently expects "startAfter" to
> be just a file name. As a result, NFS gateway can't list the content of large
> directories.
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