[IGNITE-12548] Possible tx desync during recovery on near node left.

• Type: Bug
• Status: Resolved
• Priority: Blocker
• Resolution: Fixed
• Affects Version/s: 2.7.6
• Fix Version/s: 2.9, 2.8.1
• Ignite Flags: Docs Required, Release Notes Required
• Assignee: Alexey Scherbakov
• Reporter: Alexey Scherbakov
• Created: 16/Jan/20 07:51
• Updated: 17/Apr/20 07:49
• Resolved: 20/Jan/20 11:44

Description

The problem appears if a transaction is starting to rollback in PREPARED state for some reason and concurrently near node is left triggering tx recovery protocol.

Consider having two enlisted keys from different partitions mapped to different nodes N1 and N2.

Due to race N1 local tx can be rolled back while N2 local tx is committed breaking tx atomicity guarantee.

Issue Links

• links to: GitHub Pull Request #7274