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https://issues.apache.org/jira/browse/HIVE-20129?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16537774#comment-16537774
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Gunther Hagleitner commented on HIVE-20129:
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+1
> Revert to position based schema evolution for orc tables
> --------------------------------------------------------
>
> Key: HIVE-20129
> URL: https://issues.apache.org/jira/browse/HIVE-20129
> Project: Hive
> Issue Type: Bug
> Affects Versions: 4.0.0, 3.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
> Priority: Major
> Attachments: HIVE-20129.1.patch
>
>
> Hive has been doing positional based schema evolution. ORC-54 changed it to
> column name based schema evolution causing unexpected results. Queries
> returned results earlier are now returning no results. Change the default in
> hive to positional schema evolution.
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