Zhijie Shen created YARN-2837:

             Summary: Timeline server needs to recover the timeline DT when 
                 Key: YARN-2837
                 URL: https://issues.apache.org/jira/browse/YARN-2837
             Project: Hadoop YARN
          Issue Type: New Feature
          Components: timelineserver
            Reporter: Zhijie Shen
            Assignee: Zhijie Shen
            Priority: Blocker

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.

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