[HDFS-10683] Make class Token$PrivateToken private

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 2.9.0
• Fix Version/s: 2.9.0, 3.0.0-alpha2, 2.8.2
• Labels: fs ha security security_token
• Target Version/s: 2.9.0, 3.0.0-alpha2
• Hadoop Flags: Reviewed
• Assignee: John Zhuge
• Reporter: John Zhuge
• Created: 24/Jul/16 23:15
• Updated: 07/Jun/17 23:58
• Resolved: 06/Oct/16 00:52

Description

Avoid instanceof or typecasting of Toke.PrivateToken by introducing an interface method in Token. Make class Toke.PrivateToken private. Use a factory method instead.

Issue Links

• depends upon: HDFS-9276 Failed to Update HDFS Delegation Token for long running application in HA mode