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https://issues.apache.org/jira/browse/HDFS-10883?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15514555#comment-15514555
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Xiaoyu Yao commented on HDFS-10883:
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bq. I think the second behavior is more consistent, because of the case Weichiu
mentioned with nested EZs. That is, getTrashRoot("/") should return
/.Trash/USER. I don't know why there is a special case.
I agree 2nd behavior is preferred.
bq. How about adding an subsection here: TransparentEncryption.md#Architecture
and name it as "operation with a nested encryption zone".
HDFS-9644 is the document JIRA added for nested encryption zone support. We
could also improve the newly added "Rename_and_Trash_considerations" section to
document not only the case for file rename but also the directory rename,
especially the root of the encryption zone cases.
> `getTrashRoot`'s behavior is not consistent in DFS after enabling EZ.
> ---------------------------------------------------------------------
>
> Key: HDFS-10883
> URL: https://issues.apache.org/jira/browse/HDFS-10883
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Yuanbo Liu
> Assignee: Yuanbo Liu
> Attachments: HDFS-10883-test-case.txt, HDFS-10883.001.patch
>
>
> Let's say root path ("/") is the encryption zone, and there is a file called
> "/test" in root path.
> {code}
> dfs.getTrashRoot(new Path("/"))
> {code}
> returns "/user/$USER/.Trash",
> while
> {code}
> dfs.getTrashRoot(new Path("/test"))
> {code}
> returns "/.Trash/$USER".
> Please see the attachment to know how to reproduce this issue.
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