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https://issues.apache.org/jira/browse/HIVE-13840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Prasanth Jayachandran updated HIVE-13840:
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Attachment: HIVE-13840.1.patch
[~owen.omalley] Can you please take a look? This fixes the perf regression.
> Orc split generation is reading file footers twice
> --------------------------------------------------
>
> Key: HIVE-13840
> URL: https://issues.apache.org/jira/browse/HIVE-13840
> Project: Hive
> Issue Type: Bug
> Components: ORC
> Affects Versions: 2.1.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Critical
> Attachments: HIVE-13840.1.patch
>
>
> Recent refactorings to move orc out introduced a regression in split
> generation. This leads to reading the orc file footers twice during split
> generation.
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