[HDFS-6583] Remove clientNode in FileUnderConstructionFeature

• Type: Bug
• Status: Closed
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: 2.5.0
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Haohui Mai
• Reporter: Haohui Mai
• Created: 20/Jun/14 21:39
• Updated: 15/Aug/14 05:41
• Resolved: 22/Jun/14 07:41

Description

FileUnderConstructionFeature contains two fields clientMachine and clientNode. clientNode keeps a reference of a DatanodeDescriptor. The reference be recomputed by consulting DatanodeManager.

This jira proposes to remove clientNode in the FileUnderConstructionFeature to simplify the code and to reduce overhead.

Issue Links

• relates to: HDFS-5714 Use byte array to represent UnderConstruction feature and Snapshot feature for INodeFile