[YARN-2837] Timeline server needs to recover the timeline DT when restarting

• Type: New Feature
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 2.7.0
• Component/s: timelineserver
• Target Version/s: 2.7.0
• Hadoop Flags: Reviewed
• Assignee: Zhijie Shen
• Reporter: Zhijie Shen
• Created: 10/Nov/14 05:02
• Updated: 10/Apr/15 20:09
• Resolved: 24/Dec/14 02:27

Description

Timeline server needs to recover the stateful information when restarting as RM/NM/JHS does now. So far the stateful information only includes the timeline DT. Without recovery, the timeline DT of the existing YARN apps is not long valid, and cannot be renewed any more after the timeline server is restarted.