[HDFS-5104] Support dotdot name in NFS LOOKUP operation

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0-alpha1
• Fix Version/s: 2.1.1-beta
• Component/s: nfs
• Assignee: Brandon Li
• Reporter: Brandon Li
• Created: 15/Aug/13 23:45
• Updated: 12/May/16 18:15
• Resolved: 17/Aug/13 21:18

Description

Procedure LOOKUP searches a directory for a specific name and returns the file handle for the corresponding file system object. NFS client sets filename as ".." to get the parent directory information.

Currently ".." is considered invalid name component. We only allow ".." when the path is an inodeID path as "/.reserved/.inodes/.."