[HIVE-18190] Consider looking at ORC file schema rather than using _metadata_acid file

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: Transactions
• Target Version/s: 3.0.0
• Assignee: Eugene Koifman
• Reporter: Eugene Koifman
• Created: 01/Dec/17 01:14
• Updated: 01/Oct/19 22:07
• Resolved: 11/Jan/18 21:23

Description

See if it's possible to just look at the schema of the file in base_ or delta_ to see if it has Acid metadata columns. If not, it's an 'original' file and needs ROW_IDs generated.

see more discussion at https://reviews.apache.org/r/64131/