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Posted to issues@orc.apache.org by "Dongjoon Hyun (Jira)" <ji...@apache.org> on 2024/04/10 16:18:00 UTC
[jira] [Assigned] (ORC-642) ORC specification for RLEv2 is incomplete
[ https://issues.apache.org/jira/browse/ORC-642?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Dongjoon Hyun reassigned ORC-642:
---------------------------------
Assignee: Jeffrey Vo
> ORC specification for RLEv2 is incomplete
> -----------------------------------------
>
> Key: ORC-642
> URL: https://issues.apache.org/jira/browse/ORC-642
> Project: ORC
> Issue Type: Bug
> Reporter: Devavret Makkar
> Assignee: Jeffrey Vo
> Priority: Minor
>
> The documentation at [https://orc.apache.org/specification/ORCv1/] fails to mention that in RLEv2 patched base mode, the bit width of PW + PGW is to be ceiled to the nearest fixed bit size. The values in the fixed bit size set appear to be from the table here [https://github.com/apache/orc/blob/9c65bc116a2208d5d729687b7744b2ffbd72fea0/c%2B%2B/src/RLEV2Util.cc#L30-L37] which does not exactly match the values in the 5 bit width encoding table as the latter lacks support for sizes 22 and 23.
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