[HIVE-13821] OrcSplit groups all delta files together into a single split

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 2.1.0
• Fix Version/s: 2.1.0
• Component/s: Transactions
• Target Version/s: 1.3.0, 2.1.0
• Assignee: Prasanth Jayachandran
• Reporter: Prasanth Jayachandran
• Created: 23/May/16 18:28
• Updated: 21/Jun/16 15:08
• Resolved: 26/May/16 01:25

Description

HIVE-7428 had fix for worst case column projection size estimate. It was removed in HIVE-10397 to return file length but for ACID strategy file length is passed as 0. In worst case, this always return 0 and all files ends up in single split.