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https://issues.apache.org/jira/browse/YARN-3984?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14648605#comment-14648605
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Vrushali C commented on YARN-3984:
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Yes, right. Given an event id,  in the case the column key is {code}  e! 
eventid # inverse_event_timestamp ? eventkey  {code}, we can query for a 
particular event.




> Rethink event column key issue
> ------------------------------
>
>                 Key: YARN-3984
>                 URL: https://issues.apache.org/jira/browse/YARN-3984
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Zhijie Shen
>            Assignee: Vrushali C
>             Fix For: YARN-2928
>
>
> Currently, the event column key is event_id?info_key?timestamp, which is not 
> so friendly to fetching all the events of an entity and sorting them in a 
> chronologic order. IMHO, timestamp?event_id?info_key may be a better key 
> schema. I open this jira to continue the discussion about it which was 
> commented on YARN-3908.



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