[HDFS-10779] Rename does not need to re-solve destination

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.8.0, 3.0.0-alpha2
• Component/s: hdfs
• Hadoop Flags: Reviewed
• Assignee: Daryn Sharp
• Reporter: Daryn Sharp
• Created: 19/Aug/16 17:10
• Updated: 28/Sep/16 23:17
• Resolved: 28/Sep/16 23:05

Description

Rename uses FSDirectory.isDir(String) to determine if the destination is a directory. This dissect the path, creates an IIP, checks if the last inode is a directory. The rename operations already have the IIP and can check it directly.