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https://issues.apache.org/jira/browse/HDFS-5293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15282169#comment-15282169
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Sangjin Lee commented on HDFS-5293:
-----------------------------------
There has been no movement on this for a while. We'll need to move it out of
scope for 2.8.0 soon. Let me know if you disagree.
> Symlink resolution requires unnecessary RPCs
> --------------------------------------------
>
> Key: HDFS-5293
> URL: https://issues.apache.org/jira/browse/HDFS-5293
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: namenode
> Affects Versions: 2.0.0-alpha, 3.0.0-alpha1
> Reporter: Daryn Sharp
> Priority: Critical
>
> When the NN encounters a symlink, it throws an {{UnresolvedLinkException}}.
> This exception contains only the path that is a symlink. The client issues
> another RPC to obtain the link target, followed by another RPC with the link
> target + remainder of the original path.
> {{UnresolvedLinkException}} should be returning both the link and the target
> to avoid a costly and unnecessary intermediate RPC to obtain the link target.
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