[HIVE-18693] Snapshot Isolation does not work for Micromanaged table when a insert transaction is aborted

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 3.0.0
• Component/s: Transactions
• Release Note: n/a
• Assignee: Steve Yeom
• Reporter: Steve Yeom
• Created: 13/Feb/18 06:50
• Updated: 22/May/18 23:12
• Resolved: 15/Mar/18 18:19

Description

TestTxnCommands2#writeBetweenWorkerAndCleaner with minor
changes (changing delete command to insert command) fails on MM table.

Specifically the last SELECT commands returns wrong results.

But this test works fine with full ACID table.
======
MM table inserts were not making entries into TXN_COMPONENTS, thus the txnHandler.cleanEmptyAbortedTxns(); logic in Initiator can wipe out TXNS entry for an aborted transaction before the relevant files on disk are removed.

Issue Links

• blocks: HIVE-18773 Support multiple instances of Cleaner
• links to: https://reviews.apache.org/r/65843/