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Date: Fri, 14 Aug 2015 22:01:46 +0000 (UTC)
From: "Li Lu (JIRA)" <jira@apache.org>
To: yarn-issues@hadoop.apache.org
Message-ID: <JIRA.12841288.1435573666000.73170.1439589706130@Atlassian.JIRA>
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 <JIRA.12841288.1435573666087@arcas>
Subject: [jira] [Commented] (YARN-3862) Decide which contents to retrieve
 and send back in response in TimelineReader
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    [ https://issues.apache.org/jira/browse/YARN-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14697845#comment-14697845 ] 

Li Lu commented on YARN-3862:
-----------------------------

Oh and, BTW, I thinks it's pretty much fine on the code side, so please feel free to proceed this JIRA as planed. Thanks! 

> Decide which contents to retrieve and send back in response in TimelineReader
> -----------------------------------------------------------------------------
>
>                 Key: YARN-3862
>                 URL: https://issues.apache.org/jira/browse/YARN-3862
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>    Affects Versions: YARN-2928
>            Reporter: Varun Saxena
>            Assignee: Varun Saxena
>         Attachments: YARN-3862-YARN-2928.wip.01.patch
>
>
> Currently, we will retrieve all the contents of the field if that field is specified in the query API. In case of configs and metrics, this can become a lot of data even though the user doesn't need it. So we need to provide a way to query only a set of configs or metrics.
> As a comma spearated list of configs/metrics to be returned will be quite cumbersome to specify, we have to support either of the following options :
> # Prefix match
> # Regex
> # Group the configs/metrics and query that group.
> We also need a facility to specify a metric time window to return metrics in a that window. This may be useful in plotting graphs 


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