Issue Summary

16 out of 66 BFG configurations encountered a checksum mismatch issue during testing, even after applying Ivan's fix and setting ops.reserve=0. Subsequent reruns of the 16 failed BFG configs using Chenhao's WT-16955 PR branch did not resolve the checksum mismatch issue.

Context

• The tests were run as part of WT-16483.
• Ivan's fix and the ops.reserve=0 parameter were applied to all BFG configs.
• 16 specific BFG configs failed with checksum mismatch (see list below).
• Some BFGs also hit a stable timestamp issue tracked in WT-16577.
• Applying Chenhao's WT-16955 branch did not resolve the checksum mismatch for these configs.

Failed BFG Configs

BFG-2936972
BFG-2941549
BFG-2943810
BFG-2943813
BFG-2945545
BFG-2947243
BFG-2947244
BFG-2949069
BFG-2951649
BFG-2957917
BFG-2957919
BFG-2958556
BFG-2960142
BFG-2960146
BFG-2962211
BFG-2962213

Proposed Solution

• Further investigation is required to identify the root cause of the checksum mismatch in these 16 BFG configs.
• Review logs and test output from the failed runs for additional clues.
• Coordinate with the team to determine if additional instrumentation or debugging is needed.

Original Slack thread: Slack Thread
This ticket was generated by AI from a Slack thread.