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From "Li Lu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3051) [Storage abstraction] Create backing storage read interface for ATS readers
Date Mon, 30 Mar 2015 00:55:53 GMT

    [ https://issues.apache.org/jira/browse/YARN-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14386057#comment-14386057
] 

Li Lu commented on YARN-3051:
-----------------------------

I think for reader APIs,we need to support use cases both with and without the context info.
First of all, to the readers, the "context" info is only contextual for the entities, but
for for the queries. Actually, it's just a key for the query. 

IMHO, for GUIs, we need to support the "context" based query: given a cluster id, list all
related things, etc,. For end users, we need to support the queries to query those "context":
given a time window, query all entities in this window, etc,. I remember we had some discussion
on RESTful calls we need to support (and some documents drafted by [~vrushalic]), but I couldn't
find it...

Currently we're not including our first-class objects in the query. Are we doing that deliberately?
 

> [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
>
> Per design in YARN-2928, create backing storage read interface that can be implemented
by multiple backing storage implementations.



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