Vrushali C commented on YARN-3411:

Hi [~gtCarrera9] and [~djp] 

Thanks for the comments, I will reply to these shortly but wanted to quickly 
respond about 
bq. Can we turn this into java code? As we haven't add any ruby code before, it 
could bring extra complexity/dependency on ruby.

Sure, I can change it to java but I think, as such there should not be any 
problem running ruby code with hbase, it does not add to dependencies. In fact, 
the HBase Shell, which is a command line interpreter for HBase is written in 

> [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.poc.2.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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