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Druid notes

• Build and Debug
• Query Structure
• Query Lifecycle
• Sequences and Yielders
• Custom Service
• Integration Test Analysis
• Integration Test Revisions
• Integration Tests for Extensions
• Metadata Storage
• Calcite Notes
• Calcite Integration
• Calcite Table Functions
• Clint's Filter Writeup
• Query Execution in Tests
• Aggregators for the Catalog
• Compaction Notes

Projects

• Query Profile (Abandoned)
• Single Process (Abandoned)
• ZooKeeper Replacement (Abandoned)
• Toward Operators (Abandoned)
• Planner Tests
• Window Functions (Abandoned)

Helpful Resources

• Try Druid

Other Notes

• Druid Query Engine Integration
• Scripts