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Posted to issues@orc.apache.org by "Owen O'Malley (JIRA)" <ji...@apache.org> on 2019/07/03 17:25:00 UTC

[jira] [Commented] (ORC-519) Incorrect ORC v1 specification of Decimal encoding

    [ https://issues.apache.org/jira/browse/ORC-519?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16878010#comment-16878010 ] 

Owen O'Malley commented on ORC-519:
-----------------------------------

Yeah, I agree the spec is wrong. (At least the Java agrees with the C++.) :)

> Incorrect ORC v1 specification of Decimal encoding
> --------------------------------------------------
>
>                 Key: ORC-519
>                 URL: https://issues.apache.org/jira/browse/ORC-519
>             Project: ORC
>          Issue Type: Bug
>          Components: documentation
>            Reporter: Brent Kerby
>            Priority: Minor
>
> According to the ORC v1 specification ([https://orc.apache.org/specification/ORCv1/]), the SECONDARY (scale) stream in a Decimal column is encoded using Unsigned Integer RLE v1. However, observing the implementation and behavior of the C++ library, it is evident that the Signed Integer RLE v1 is what is actually used.



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