Databricks Community

Every Spark engineer eventually hits the same wall: the query works, but you don't know why it's slow, or why it suddenly got fast after a one-line config change. The gap between "I can write Spark SQL" and "I can reason about Spark's execution" is a...

IntroductionIoT devices generate a large amount of data every day. In a perfect scenario, all this data arrives on time and our ingestion pipeline processes it using incremental loads. But in real-world IoT systems, this does not always happen.A devi...