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https://issues.apache.org/jira/browse/HDFS-16816?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17627964#comment-17627964
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Íñigo Goiri edited comment on HDFS-16816 at 11/2/22 8:10 PM:
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I still don't fully understand the premise:
```
When the user home dir is not created before-hand at a namenode, we run into
permission denied exceptions when trying to create the parent dir for the trash
file before moving the file into it
```
Why does move have permission denied issues?
was (Author: elgoiri):
I still don't fully understand the premise:
```
When the user home dir is not created before-hand at a namenode, we run into
permission denied exceptions when trying to create the parent dir for the trash
file before moving the file into it
```
Why does move have permission denied issues?
> RBF: auto-create user home dir for trash paths by router
> --------------------------------------------------------
>
> Key: HDFS-16816
> URL: https://issues.apache.org/jira/browse/HDFS-16816
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: rbf
> Reporter: Xing Lin
> Assignee: Xing Lin
> Priority: Minor
> Labels: pull-request-available
>
> In RBF, trash files are moved to trash root under user's home dir at the
> corresponding namespace/namenode where the files reside. This was added in
> HDFS-16024. When the user home dir is not created before-hand at a namenode,
> we run into permission denied exceptions when trying to create the parent dir
> for the trash file before moving the file into it. We propose to enhance
> Router, to auto-create a user home's dir at the namenode for trash paths,
> using router's identity (which is assumed to be a super-user).
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