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https://issues.apache.org/jira/browse/AVRO-806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448671#comment-13448671
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Raymie Stata commented on AVRO-806:
-----------------------------------

I'm strongly against option (1).  Trevni is clearly designed to use Avro (and 
Thrift and Protocol Buffers).  Indeed, it's code is in org.apache.trevni, not 
org.apache.avro.trevni (which it should be -- I'm not suggesting otherwise).  
Further, I can imagine large number of Avro usages -- perhaps the majority -- 
not wanting Trevni.  So it seems like option (1) creates unnecessary coupling 
-- and just sets us up for refactoring the code base in the future.

Regarding option (2), I think that's bad for Trevni.  If you want to recruit 
members of the Thrift and Protocol Buffers communities to the Trevni project, 
it seems like a mistake to put Trevni into the Avro project.  You write "I 
worry that Trevni's too small to sustain an independent community," but this 
has the danger of becoming a self-fulfilling prophesy.  For example, as far as 
I can tell, the Thrift and Protocol Buffer communities are larger than Avro's, 
so from a recruiting perspective, aren't you working to fulfill your "small 
community" prophesy by dropping Trevni into the smallest community of the three?

However, if you believe that the Avro project is currently the best home for 
Trevni, then I believe a top-level trevni/ directory in the Avro project is the 
right place for it.
                
> add a column-major codec for data files
> ---------------------------------------
>
>                 Key: AVRO-806
>                 URL: https://issues.apache.org/jira/browse/AVRO-806
>             Project: Avro
>          Issue Type: New Feature
>          Components: java, spec
>            Reporter: Doug Cutting
>            Assignee: Doug Cutting
>         Attachments: AVRO-806.patch, AVRO-806-v2.patch, avro-file-columnar.pdf
>
>
> Define a codec that, when a data file's schema is a record schema, writes 
> blocks within the file in column-major order.  This would permit better 
> compression and also permit efficient skipping of fields that are not of 
> interest.

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