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https://issues.apache.org/jira/browse/HIVE-14354?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pengcheng Xiong updated HIVE-14354:
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Target Version/s: 3.0.0 (was: 2.2.0)
> Cleanup ORC reader interfaces and redundant metadata objects
> ------------------------------------------------------------
>
> Key: HIVE-14354
> URL: https://issues.apache.org/jira/browse/HIVE-14354
> Project: Hive
> Issue Type: Bug
> Components: ORC
> Affects Versions: 2.2.0
> Reporter: Prasanth Jayachandran
> Assignee: Prasanth Jayachandran
>
> ORC reader interface has to separated out to a new interface that only
> returns metadata.
> OrcTail should implement the new interface that only provides metadata
> information about the file.
> OrcFileMetadata object contains many redundant information that can be
> obtained from OrcTail. This class should be cleaned up and OrcTail should be
> reused.
> Remove all references to List<OrcProto.Types> and replace them with
> TypeDescription.
> SchemaEvolution objects are created in multiple places. But the information
> required for creating SchemaEvolution is already present within the Reader
> (file types, projection and schema on read).
> Schema on read can be specified only to RecordReader options. Reader options
> should also accept schema on read type description.
> Consolidate Reader options and RecordReader options.
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