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https://issues.apache.org/jira/browse/HIVE-13974?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15333277#comment-15333277
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Matt McCline commented on HIVE-13974:
-------------------------------------
Lots of related unit test failures -- clearly this change has broken some major
assumptions in the unit tests. I don't understand the schema_evol_stats.q Q
file failure. But otherwise, no other Q file failures???
> ORC Schema Evolution doesn't support add columns to non-last STRUCT columns
> ---------------------------------------------------------------------------
>
> Key: HIVE-13974
> URL: https://issues.apache.org/jira/browse/HIVE-13974
> Project: Hive
> Issue Type: Bug
> Components: Hive, ORC, Transactions
> Affects Versions: 1.3.0, 2.1.0, 2.2.0
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Blocker
> Fix For: 2.1.0
>
> Attachments: HIVE-13974.01.patch, HIVE-13974.02.patch,
> HIVE-13974.03.patch, HIVE-13974.04.patch
>
>
> Currently, the included columns are based on the fileSchema and not the
> readerSchema which doesn't work for adding columns to non-last STRUCT data
> type columns.
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