[HIVE-17526] Disable conversion to ACID if table has _copy_N files on branch-1

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 1.3.0
• Component/s: Transactions
• Assignee: Daniel Voros
• Reporter: Daniel Voros
• Created: 13/Sep/17 14:29
• Updated: 31/Oct/17 14:47
• Resolved: 19/Oct/17 09:20

Description

As discussed in HIVE-16177, non-ACID to ACID conversion can lead to data loss if the table has *_copy_N files.

The patch for HIVE-16177 is quite massive and would basically need a reimplementation to apply for branch-1 since the related code paths have diverged a lot. We could disable the conversion to ACID if there are *_copy_N files instead.

Issue Links

• relates to: HIVE-17947 Concurrent inserts might fail for ACID table since HIVE-17526 on branch-1
• relates to: HIVE-16177 non Acid to acid conversion doesn't handle _copy_N files