[HDFS-4188] Add a snapshot id comparator

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Fix Version/s: Snapshot (HDFS-2802)
• Component/s: namenode
• Hadoop Flags: Reviewed
• Assignee: Tsz-wo Sze
• Reporter: Tsz-wo Sze
• Created: 14/Nov/12 03:25
• Updated: 16/Nov/12 13:23
• Resolved: 15/Nov/12 22:01

Description

The Snapshot class currently has two compareTo methods. The one for comparing IDs is not implementing the Comparable interface since Java does not allow implementing the same interface twice with different generic types. It is better to remove one of the compareTo methods for avoiding confusion.