[HDFS-6690] Deduplicate xattr names in memory

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.5.0
• Fix Version/s: 2.6.0
• Component/s: namenode
• Target Version/s: 2.6.0
• Assignee: Andrew Wang
• Reporter: Andrew Wang
• Created: 15/Jul/14 21:15
• Updated: 01/Dec/14 03:07
• Resolved: 17/Jul/14 00:44

Description

When the same string is used repeatedly for an xattr name, we could potentially save some NN memory by deduplicating the strings.