Here's a good article from New Relic on the problem, if you'd like more detail: https://newrelic.com/blog/best-practices/kafka-consumer-conf...

Or here, you can reproduce it yourself using the Bufstream or Redpanda/Kafka test suite. Here's a real quick run I just dashed off. You can watch it skip over writes: https://gist.github.com/aphyr/1af2c4eef9aacde7f08f1582304908...

lein run test --enable-auto-commit --bin bufstream-0.1.3-rc.12 --time-limit 30 --txn --final-time-limit 1/10000