Xiao Chen created HDFS-10756:
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Summary: 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
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 into 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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