[HDFS-9844] Correct path creation in getTrashRoot to handle root dir

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.8.0
• Fix Version/s: 2.8.0, 3.0.0-alpha1
• Component/s: encryption
• Target Version/s: 2.8.0
• Hadoop Flags: Reviewed
• Assignee: Zhe Zhang
• Reporter: Zhe Zhang
• Created: 22/Feb/16 23:39
• Updated: 30/Aug/16 01:19
• Resolved: 23/Feb/16 21:32

Description

      if ((ez != null)) {
        return this.makeQualified(
            new Path(ez.getPath() + "/" + FileSystem.TRASH_PREFIX +
                dfs.ugi.getShortUserName()));

This doesn't handle root dir correctly. The unit test testRootDirEZTrash in the attached patch can reproduce the error.

Issue Links

• relates to: HDFS-8831 Trash Support for deletion in HDFS encryption zone