The B-Tree of Horror:
Kafka migration tales to chill your partitions
Polster
Lenses.io
Gamble
AI by Wire
Every Kafka engineer has one. The migration that was “basically a lift and shift.” The cutover that was “just a config change.” The night the call came from inside the cluster.
This Halloween, we're hosting a live show built on real Kafka migration war stories from the people who survived them:
👻 The Offsets That Came Back Wrong: MirrorMaker 2 cutover, missing checkpoints, 2.1M orders replayed
🧟 The Migration Stuck in Limbo: half ZooKeeper, half KRaft, fully neither
🕸️ The Znode Too Big to Write: one reassignment to rule them all, zero sessions left alive
🔥 The Version That Didn’t Match: one forgotten 0.10 client vs. a freshly upgraded cluster
⏳ The Producer From the Future: clock skew so bad retention stopped believing in time
Expect short clips from the Kafka community, a couple of live interviews, plenty of heckling, and some practical lessons on keeping your own migration out of the crypt. We’ll show what these looked like through Lenses, because you can’t fix what you can’t see.
No partitions were harmed in the making of this webinar.* Bring your own trauma, and your questions.