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https://issues.apache.org/jira/browse/YARN-3051?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14495596#comment-14495596
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Sangjin Lee commented on YARN-3051:
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Basically attempts to create a new row in the entity table with a different PK
but with identical (cluster id, entity type, entity id) should be disallowed.
Of course, updates to an existing PK should not be affected.
> [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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