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From "Vrushali C (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3914) Entity created time should be part of the row key of entity table
Date Wed, 20 Jul 2016 16:49:20 GMT

    [ https://issues.apache.org/jira/browse/YARN-3914?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15386190#comment-15386190
] 

Vrushali C commented on YARN-3914:
----------------------------------

+ 1 on closing this issue. 

> Entity created time should be part of the row key of entity table
> -----------------------------------------------------------------
>
>                 Key: YARN-3914
>                 URL: https://issues.apache.org/jira/browse/YARN-3914
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Zhijie Shen
>            Assignee: Zhijie Shen
>              Labels: YARN-5355
>
> Entity created time should be part of the row key of entity table, between entity type
and entity Id. The reason to have it is to index the entities. Though we cannot index the
entities for all kinds of information, indexing them according to the created time is very
necessary. Without it, every query for the latest entities that belong to an application and
a type will scan through all the entities that belong to them. For example, if we want to
list the 100 latest started containers in an YARN app.



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