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chrislu
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- Create PROTOCOL_COMPATIBILITY_REVIEW.md documenting all compatibility issues - Add critical TODOs to most problematic protocol implementations: * Produce: Record batch parsing is simplified, missing compression/CRC * Offset management: Hardcoded 'test-topic' parsing breaks real clients * JoinGroup: Consumer subscription extraction hardcoded, incomplete parsing * Fetch: Fake record batch construction with dummy data * Handler: Missing API version validation across all endpoints - Identify high/medium/low priority fixes needed for real client compatibility - Document specific areas needing work: * Record format parsing (v0/v1/v2, compression, CRC validation) * Request parsing (topics arrays, partition arrays, protocol metadata) * Consumer group protocol metadata parsing * Connection metadata extraction * Error code accuracy - Add testing recommendations for kafka-go, Sarama, Java clients - Provide roadmap for Phase 4 protocol compliance improvements This review is essential before attempting integration with real Kafka clients as current simplified implementations will fail with actual client libraries.