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From "Yuanbo Liu (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HDFS-10756) Expose getTrashRoot to HTTPFS and WebHDFS
Date Tue, 30 Aug 2016 08:11:20 GMT

     [ https://issues.apache.org/jira/browse/HDFS-10756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Yuanbo Liu updated HDFS-10756:
------------------------------
    Attachment: HDFS-10756.002.patch

> 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
>         Attachments: HDFS-10756.001.patch, HDFS-10756.002.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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