[SPARK-26447] Allow OrcColumnarBatchReader to return less partition columns

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: SQL
• Assignee: Gengliang Wang
• Reporter: Gengliang Wang
• Created: 26/Dec/18 17:33
• Updated: 29/Apr/19 05:51
• Resolved: 03/Jan/19 16:37

Description

Currently OrcColumnarBatchReader returns all the partition column values in the batch read.
In data source V2, we can improve it by returning the required partition column values only.

Issue Links

• links to: GitHub Pull Request #23387