rust-data-processing 0.3.3

Schema-first ingestion (CSV, JSON, Parquet, Excel) into an in-memory DataSet, plus Polars-backed pipelines, SQL, profiling, validation, and map/reduce-style processing.
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KAFKA_PORT=19092
KAFKA_BROKERS=127.0.0.1:19092
KAFKA_TOPIC=rdp-uber-pickups
KAFKA_GROUP_ID=rdp-integration-test