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From "Zhijie Shen (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (YARN-2837) Timeline server needs to recover the timeline DT when restarting
Date Mon, 08 Dec 2014 23:22:13 GMT

     [ https://issues.apache.org/jira/browse/YARN-2837?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Zhijie Shen updated YARN-2837:
    Attachment: YARN-2837.5.patch

Do two more things in the new patch:

1. Correct the logic of storing version by differentiating the cases of create a new state
store and the existing state store. It seems that LeveldbTimelineStore needs to be fixed too.
Let's treat it as a separate issue.

2. Like RMDelegationTokenIdentifierData, create a TimelineDelegationTokenIndentifierData to
wrap all fields to be serialized into leveldb for better compatibility if we add more fields
in the future.

> 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, YARN-2837.4.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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