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From "Varun Saxena (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3051) [Storage abstraction] Create backing storage read interface for ATS readers
Date Tue, 31 Mar 2015 16:08:53 GMT

    [ https://issues.apache.org/jira/browse/YARN-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14388755#comment-14388755

Varun Saxena commented on YARN-3051:

Some use case scenarios which are pending.
# To plot graphs based on timeseries data, we may need to provide a time window for metrics
too. This would be useful in case of getEntity() API. So do we specify this time window separately
for each metric to be retrieved or same for all metrics ?
# Queries based on relations i.e. queries such as get all containers for an app. We can return
relatesto field while querying for an app. And then client can use this result to fetch detailed
info about related entities. Is that fine ? Or we have to be handle it as part of a single
query ? 
# Some understanding on how flow id, flow run id will be stored is required.

> [Storage abstraction] Create backing storage read interface for ATS readers
> ---------------------------------------------------------------------------
>                 Key: YARN-3051
>                 URL: https://issues.apache.org/jira/browse/YARN-3051
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Varun Saxena
>         Attachments: YARN-3051_temp.patch
> Per design in YARN-2928, create backing storage read interface that can be implemented
by multiple backing storage implementations.

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