[HIVE-23503] ValidTxnManager doesn't consider txns opened and committed between snapshot generation and locking when evaluating ValidTxnListState

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Transactions
• Assignee: Denys Kuzmenko
• Reporter: Denys Kuzmenko
• Created: 19/May/20 10:48
• Updated: 17/Nov/22 08:48
• Resolved: 19/Jun/20 11:24

Description

ValidTxnManager doesn't consider txns opened and committed between snapshot generation and locking when evaluating ValidTxnListState. This cause issues like duplicate insert in case of concurrent merge insert & insert.

Issue Links

• relates to: HIVE-23725 ValidTxnManager snapshot outdating causing partial reads in merge insert
• links to: Review Board