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https://issues.apache.org/jira/browse/YARN-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14233234#comment-14233234
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Zhijie Shen commented on YARN-2837:
-----------------------------------
bq. Maybe we want to make the "version control" logic a unified interface in
future?
I think it's a good suggestion, but how about leaving code refactoring
separately? In addition to the timeline server, other components have the state
store that is built on top of leveldb, and have the similar version related
code. We can do one-pass refactoring, make all leveldb store impls share the
common code. Let's file a Jira for it.
> Timeline server needs to recover the timeline DT when restarting
> ----------------------------------------------------------------
>
> 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
> Fix For: 2.7.0
>
> Attachments: YARN-2837.1.patch, YARN-2837.2.patch, YARN-2837.3.patch
>
>
> 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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