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https://issues.apache.org/jira/browse/ORC-120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15748763#comment-15748763
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ASF GitHub Bot commented on ORC-120:
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Github user asfgit closed the pull request at:
https://github.com/apache/orc/pull/72
> Create a backwards compatibility mode of ignoring names for evolution
> ---------------------------------------------------------------------
>
> Key: ORC-120
> URL: https://issues.apache.org/jira/browse/ORC-120
> Project: Orc
> Issue Type: Task
> Reporter: Owen O'Malley
>
> ORC's schema evolution uses the column names when they are available. Hive
> 2.1 uses a positional schema, so ORC should support a backward compatibility
> mode for Hive users during the transition.
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