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https://issues.apache.org/jira/browse/YARN-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14609205#comment-14609205
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Sangjin Lee commented on YARN-3051:
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bq. It's not that straightforward. For example, I can put entity 1 twice: one
contains event 1 and the other contains event 2. In fact, when I want to
retrieve the entity 1 with event field included. I actually want to have both
events. I can see two choices: one is to merge the entity data at the write
path and the other at the read path.
I think it would be easier (for the filesystem writer/reader) to do this on the
read path.
> [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
> Affects Versions: YARN-2928
> Reporter: Sangjin Lee
> Assignee: Varun Saxena
> Attachments: YARN-3051-YARN-2928.003.patch,
> YARN-3051-YARN-2928.03.patch, YARN-3051-YARN-2928.04.patch,
> YARN-3051-YARN-2928.05.patch, YARN-3051.Reader_API.patch,
> YARN-3051.Reader_API_1.patch, YARN-3051.Reader_API_2.patch,
> YARN-3051.Reader_API_3.patch, YARN-3051.Reader_API_4.patch,
> YARN-3051.wip.02.YARN-2928.patch, YARN-3051.wip.patch, 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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