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https://issues.apache.org/jira/browse/AVRO-806?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13448632#comment-13448632
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Tom White commented on AVRO-806:
--------------------------------

+1 for option (1)
                
> 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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