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From "Junping Du (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (YARN-3031) [Storage abstraction] Create backing storage write interface for ATS writers
Date Wed, 25 Feb 2015 19:06:05 GMT

    [ https://issues.apache.org/jira/browse/YARN-3031?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14336994#comment-14336994
] 

Junping Du commented on YARN-3031:
----------------------------------

Hi [~vrushalic], thanks for updating the patch. A quick question here: 
Looks like we only specify three tracks for entity: FLOW, USER and QUEUE
{code}
+public enum AggregateUpTo {
+	FLOW,
+	USER,
+	QUEUE
+}
{code}
But we have more tracks (type) in YARN-3041.
{code}
+public enum TimelineEntityType {
+  YARN_CLUSTER,
+  YARN_FLOW,
+  YARN_APPLICATION,
+  YARN_APPLICATION_ATTEMPT,
+  YARN_CONTAINER,
+  YARN_USER,
+  YARN_QUEUE;
{code}
May be we should add more here?

> [Storage abstraction] Create backing storage write interface for ATS writers
> ----------------------------------------------------------------------------
>
>                 Key: YARN-3031
>                 URL: https://issues.apache.org/jira/browse/YARN-3031
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Vrushali C
>         Attachments: Sequence_diagram_write_interaction.2.png, Sequence_diagram_write_interaction.png,
YARN-3031.01.patch, YARN-3031.02.patch, YARN-3031.03.patch
>
>
> Per design in YARN-2928, come up with the interface for the ATS writer to write to various
backing storages. The interface should be created to capture the right level of abstractions
so that it will enable all backing storage implementations to implement it efficiently.



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