Examples

DRLS includes example scripts demonstrating all major features. Each example is a standalone Python script in the examples/ directory.

Available Examples

Example	File	Features
Quickstart	examples/quickstart.py	Spark-on-Ray, Iceberg table creation, Ray Dataset conversion
Streaming	examples/streaming_iceberg.py	Forward + reverse streaming bridge
Agent	examples/agent_demo.py	AI agent with natural language commands
Time Travel	examples/time_travel.py	Snapshot history, time-travel queries, rollback
CDC	examples/cdc_pipeline.py	Change data capture streaming
Feast Features	examples/feast_features.py	Feature store lifecycle — define, materialize, retrieve
Feast Serving	examples/feast_serving.py	HTTP API feature access (no SDK required)

Running Examples

All examples require:

1. Python 3.12+ with drls installed
2. Java 17 with JVM JARs built

# Install
cd python && pip install -e ".[all]"

# Build JVM JARs
cd core && mvn clean package -DskipTests

# Run
python examples/quickstart.py

The agent demo additionally requires an LLM provider:

# With Ollama (local)
ollama serve &
ollama pull llama3:8b
python examples/agent_demo.py --provider ollama --model llama3:8b

# With OpenAI
OPENAI_API_KEY=sk-... python examples/agent_demo.py --provider openai --model gpt-4o