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https://issues.apache.org/jira/browse/YARN-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14987636#comment-14987636
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Sangjin Lee commented on YARN-3862:
-----------------------------------

[~aw], sorry to bother you here, but our latest jenkins run is an unmitigated 
failure full of incomprehensible errors (projects banned, unrecognizable 
dependencies showing up out of nowhere, etc.). Would you be able to share what 
is going on here and how we can restore this? 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, 
> YARN-3862-YARN-2928.wip.02.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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