Scope: wipe & rebuild the full ThingsBoard data pathKeyspace: thingsboard (drop + recreate)Kafka topics: tb.thingsboard.ts_kv_cf, tb.thingsboard.ts_kv_partitions_cf (auto-create enabled)Delta root: /delta […]
Goal: make Cassandra’s memory use predictable by pinning the JVM heap and (optionally) capping off-heap/direct memory. This guide targets Ubuntu
Goal of this postDocument the exact debugging path we followed when our Delta table started showing more rows than Cassandra—step
This post shows a clean, reproducible path to stream ThingsBoard data stored in Cassandra 5.0.5 into Kafka 4.0 using Debezium
Symptom Ubuntu 24.04 ships Python 3.12, but cqlsh 6.2.0 (Cassandra 5.0.x) only supports up to Python 3.11. This post shows
This guide shows how to mirror time-series data stored in ThingsBoard’s Cassandra database into a Delta Lake table using spark-sql.
