I revert one of the fix for duplicate key and try to reproduce the issue using the data-validation-stress-test-checkpoint. In the log, I can see I have reproduced the data mismatch error but the error is not reported to upstream and the test keeps running. The failures are ignored by the testing script.

The command I run is

../../../tools/run_parallel.sh 'nice ../../../test/checkpoint/recovery-test.sh "-t r -W 3 -D -n 100000 -k 100000 -C cache_size=100MB" WT_TEST.$t' 120