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https://issues.apache.org/jira/browse/HADOOP-20069?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18138512#comment-18138512
 ] 

ASF GitHub Bot commented on HADOOP-20069:
-----------------------------------------

hadoop-yetus commented on PR #8933:
URL: https://github.com/apache/hadoop/pull/8933#issuecomment-6650402878

   :confetti_ball: **+1 overall**
   
   
   
   
   
   
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   |||| _ trunk Compile Tests _ |
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Ubuntu-21.0.12.1+1-1-24.04.4-Ubuntu  |
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Ubuntu-21.0.12.1+1-1-24.04.4-Ubuntu  |
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Ubuntu-17.0.20.1+1-1-24.04-Ubuntu  |
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   |||| _ Patch Compile Tests _ |
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   | +1 :green_heart: |  blanks  |   0m  0s |  |  The patch has no blanks 
issues.  |
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   |||| _ Other Tests _ |
   | +1 :green_heart: |  unit  |  18m 40s |  |  hadoop-common in the patch 
passed.  |
   | +1 :green_heart: |  asflicense  |   0m 40s |  |  The patch does not 
generate ASF License warnings.  |
   |  |   | 142m 13s |  |  |
   
   
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   | Docker | ClientAPI=1.56 ServerAPI=1.56 base: 
https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8933/1/artifact/out/Dockerfile
 |
   | GITHUB PR | https://github.com/apache/hadoop/pull/8933 |
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   | uname | Linux 8923b6c5e34b 5.15.0-190-generic #200-Ubuntu SMP Fri Aug 7 
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https://ci-hadoop.apache.org/job/hadoop-multibranch/job/PR-8933/1/testReport/ |
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   | modules | C: hadoop-common-project/hadoop-common U: 
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   | Powered by | Apache Yetus 0.14.1 https://yetus.apache.org |
   
   
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> TrashPolicyDefault#moveToTrash compares paths as strings, so ~/.Trash_old is 
> deleted without the trash and a prefix of the home directory cannot be moved 
> to it
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-20069
>                 URL: https://issues.apache.org/jira/browse/HADOOP-20069
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>            Reporter: Yang Jie
>            Priority: Major
>              Labels: pull-request-available
>
> moveToTrash() decides whether a path is already in the trash, and whether it 
> contains the trash, with string prefix checks:
> {code:java}
> if (qpath.startsWith(trashRoot.toString())) {
>   return false;                               // already in trash
> }
> if (trashRoot.getParent().toString().startsWith(qpath)) {
>   throw new IOException("Cannot move \"" + path +
>                         "\" to the trash, as it contains the trash");
> }
> {code}
> Neither respects path component boundaries:
> * {{hadoop fs -rm -r /user/alice/.Trash_old}} run by alice: the path starts 
> with /user/alice/.Trash, so moveToTrash() returns false and Delete falls back 
> to fs.delete(). The directory is deleted permanently and the shell prints 
> "Deleted ..." instead of "Moved: ... to trash at: ...".
> * {{hadoop fs -rm -r /user/etl}} run by etl_prod: /user/etl_prod starts with 
> /user/etl, so the command fails with "Cannot move "/user/etl" to the trash, 
> as it contains the trash. Consider using -skipTrash option".
> Encryption zone and snapshot trash roots have the same problem, e.g. 
> /ez/.Trash/alice and /ez/.Trash/alice2.
> The fix compares whole path components. Paths that are inside the trash, or 
> that contain it, are handled as before.



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