[YARN-3836] add equals and hashCode to TimelineEntity and other classes in the data model

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: YARN-2928
• Fix Version/s: 2.9.0, 3.0.0-alpha1
• Component/s: timelineserver
• Target Version/s: YARN-2928
• Hadoop Flags: Reviewed
• Assignee: Li Lu
• Reporter: Sangjin Lee
• Created: 20/Jun/15 00:59
• Updated: 21/Oct/17 06:05
• Resolved: 10/Jul/15 03:54

Description

Classes in the data model API (e.g. TimelineEntity, TimelineEntity.Identifer, etc.) do not override equals() or hashCode(). This can cause problems when these objects are used in a collection such as a HashSet. We should implement these methods wherever appropriate.