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https://issues.apache.org/jira/browse/HIVE-14214?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15374775#comment-15374775
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Matt McCline commented on HIVE-14214:
-------------------------------------
Work-In-Progress patch.
Areas that need work:
1) Using readerTypes to check and not do PPD in LocalCache.
2) OrcFileFormatProxy.applySargToMetadata -- need to pass down or generate
included boolean array.
3) HiveMetaStore.get_file_metadata_by_expr -- need to deserialize the
readerTypes. And, modify the Thrift source to add the readerTypes.
And add unit tests and/or Q file tests.
> ORC Schema Evolution and Predicate Push Down do not work together (no rows
> returned)
> ------------------------------------------------------------------------------------
>
> Key: HIVE-14214
> URL: https://issues.apache.org/jira/browse/HIVE-14214
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Reporter: Matt McCline
> Assignee: Matt McCline
> Priority: Critical
> Attachments: HIVE-14214.WIP.patch
>
>
> In Schema Evolution, the reader schema is different than the file schema
> which is used to evaluate predicate push down.
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