Junping Du commented on YARN-3411:

Hi [~vrushalic], thanks for updating the patch! Just a quick go through for the 
latest patch, sounds like we have ruby code to create schema:
+create 'ats.entity', 
+  {NAME => 'm', VERSIONS => 2147483647, MIN_VERSIONS => 1, COMPRESSION => 
'LZO', BLOCKCACHE => false, TTL => '2592000'},
Can we turn this into java code? As we haven't add any ruby code before, it 
could bring extra complexity/dependency on ruby.

BTW, I meet the problem to build locally with applying the patch. I think the 
reason seems like my local use JDK 1.8, but HBase version we are using here 
(1.0.0) depends on jdk tools 1.7. I assume we will move to Java 8 in short term 
(may be in 2.8 release cycle? - need confirm later). If so, we may need 
solution for this problem.

> [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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