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https://issues.apache.org/jira/browse/HIVE-4123?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13718830#comment-13718830
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Prasanth J commented on HIVE-4123:
----------------------------------

Just noticed. Please ignore the formatting changes that slipped through in 
SerializationUtils.java. I will fix that in next version of patch. 
                
> The RLE encoding for ORC can be improved
> ----------------------------------------
>
>                 Key: HIVE-4123
>                 URL: https://issues.apache.org/jira/browse/HIVE-4123
>             Project: Hive
>          Issue Type: New Feature
>          Components: File Formats
>            Reporter: Owen O'Malley
>            Assignee: Prasanth J
>         Attachments: HIVE-4123.1.git.patch.txt, HIVE-4123.2.git.patch.txt, 
> HIVE-4123.3.patch.txt, ORC-Compression-Ratio-Comparison.xlsx
>
>
> The run length encoding of integers can be improved:
> * tighter bit packing
> * allow delta encoding
> * allow longer runs

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