Brace yourself! Storm is coming!
summary
Quick Apache Storm primer with a live word-count topology: explains tuples, reliable vs unreliable spouts, bolts, and the DAG topology, shows ack/fail trees with a message timeout example (30s) and mentions Trident for exactly-once, stateful processing. Demo builds a spout→splitter→counter pipeline, emits a few hundred sentences while the splitter produces over a thousand words, uses tick tuple every 5s to log counts, and deploys to a tiny cluster (Zookeeper, Nimbus, one Supervisor with four worker slots) that successfully runs the topology.
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