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https://issues.apache.org/jira/browse/HDFS-10756?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17039317#comment-17039317
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Kihwal Lee commented on HDFS-10756:
-----------------------------------
Filed HDFS-15181.
> Expose getTrashRoot to HTTPFS and WebHDFS
> -----------------------------------------
>
> Key: HDFS-10756
> URL: https://issues.apache.org/jira/browse/HDFS-10756
> Project: Hadoop HDFS
> Issue Type: Improvement
> Components: encryption, httpfs, webhdfs
> Reporter: Xiao Chen
> Assignee: Yuanbo Liu
> Priority: Major
> Fix For: 2.9.0, 3.0.0-alpha2
>
> Attachments: HDFS-10756.001.patch, HDFS-10756.002.patch,
> HDFS-10756.003.patch, HDFS-10756.004.patch, HDFS-10756.005.patch,
> HDFS-10756.006.patch, HDFS-10756.007.patch
>
>
> Currently, hadoop FileSystem API has
> [getTrashRoot|https://github.com/apache/hadoop/blob/trunk/hadoop-common-project/hadoop-common/src/main/java/org/apache/hadoop/fs/FileSystem.java#L2708]
> to determine trash directory at run time. Default trash dir is under
> {{/user/$USER}}
> For an encrypted file, since moving files between/in/out of EZs are not
> allowed, when an EZ file is deleted via CLI, it calls in to [DFS
> implementation|https://github.com/apache/hadoop/blob/trunk/hadoop-hdfs-project/hadoop-hdfs-client/src/main/java/org/apache/hadoop/hdfs/DistributedFileSystem.java#L2485]
> to move the file to a trash directory under the same EZ.
> This works perfectly fine for CLI users or java users who call FileSystem
> API. But for users via httpfs/webhdfs, currently there is no way to figure
> out what the trash root would be. This jira is proposing we add such
> interface to httpfs and webhdfs.
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