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https://issues.apache.org/jira/browse/YARN-3411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14554142#comment-14554142
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Junping Du commented on YARN-3411:
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Hi [~vrushalic], I had the same concern with [~zjshen]'s previous comments that 
we are putting flow_version in column instead of keys which is different with 
current schema for Phoenix patch. Putting a field as key or column could have 
different performance hint for writing as only row key involve indexing but 
column is not (we don't have secondary index for now). To make our performance 
test/comparison as apple-to-apple, may be we should keep consistent between the 
two schema?

> [Storage implementation] explore the native HBase write schema for storage
> --------------------------------------------------------------------------
>
>                 Key: YARN-3411
>                 URL: https://issues.apache.org/jira/browse/YARN-3411
>             Project: Hadoop YARN
>          Issue Type: Sub-task
>          Components: timelineserver
>            Reporter: Sangjin Lee
>            Assignee: Vrushali C
>            Priority: Critical
>         Attachments: ATSv2BackendHBaseSchemaproposal.pdf, 
> YARN-3411-YARN-2928.001.patch, YARN-3411-YARN-2928.002.patch, 
> YARN-3411-YARN-2928.003.patch, YARN-3411-YARN-2928.004.patch, 
> YARN-3411-YARN-2928.005.patch, YARN-3411-YARN-2928.006.patch, 
> YARN-3411-YARN-2928.007.patch, YARN-3411.poc.2.txt, YARN-3411.poc.3.txt, 
> YARN-3411.poc.4.txt, YARN-3411.poc.5.txt, YARN-3411.poc.6.txt, 
> YARN-3411.poc.7.txt, YARN-3411.poc.txt
>
>
> There is work that's in progress to implement the storage based on a Phoenix 
> schema (YARN-3134).
> In parallel, we would like to explore an implementation based on a native 
> HBase schema for the write path. Such a schema does not exclude using 
> Phoenix, especially for reads and offline queries.
> Once we have basic implementations of both options, we could evaluate them in 
> terms of performance, scalability, usability, etc. and make a call.



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