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https://issues.apache.org/jira/browse/HDFS-9123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14904747#comment-14904747
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Yongjun Zhang commented on HDFS-9123:
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Hi Guys, thanks for the review and comments.
{quote}
However, the fact that the source path is the root, does not imply the
destination path must be its sub-directory. Correct? I mean they do not
necessarily belong to the same file system.
{quote}
Correct.
About
{quote}
should the tests really downgrade exceptions to logs? I'd expect them to signal
failure and be rethrown
{quote}
Good point. Since all the tests in this test file are coded like that, I think
we can create a new jira to fix all of them.
For HDFS-9123, I'd suggest that we should make the newly added test fail when
without the fix (it currently succeeds as I mentioned earlier), and make it
succeed when with the fix.
Do you guys agree?
Thanks.
> Copying from the root to a subdirectory should be forbidden
> -----------------------------------------------------------
>
> Key: HDFS-9123
> URL: https://issues.apache.org/jira/browse/HDFS-9123
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: fs
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Minor
> Attachments: HDFS-9123.001.patch, HDFS-9123.002.patch
>
>
> HDFS forbids copying from a directory to its subdirectory (e.g. hdfs dfs -cp
> /abc /abc/xyz) as otherwise it could cause infinite copying (/abc/xyz/xyz,
> /abc/xyz/xyz, /abc/xyz/xyz/xyz,... etc)
> However, the existing path validation fails if the source path is the root,
> causing infinite copying, until the disk space is filled up.
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