[jira] [Updated] (YARN-3862) Support for fetching specific configs and metrics based on prefixes

["Varun Saxena (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/YARN-3862?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Varun Saxena updated YARN-3862:
-------------------------------
    Summary: Support for fetching specific configs and metrics based on prefixes  (was: Decide which contents to retrieve and send back in response in TimelineReader)

> Support for fetching specific configs and metrics based on prefixes
> -------------------------------------------------------------------
>
>                 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
>              Labels: yarn-2928-1st-milestone
>         Attachments: YARN-3862-YARN-2928.wip.01.patch, YARN-3862-YARN-2928.wip.02.patch, YARN-3862-feature-YARN-2928.wip.03.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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