What are Delta Lake / Iceberg / Hudi and why lakehouse?

Delta Lake, Apache Iceberg, and Apache Hudi are open formats for data storage and data management engines for Data Lake, providing reliability, transactional support, and version control.

Main features:

• Support for ACID transactions in Data Lake.
• Version management and rollback capabilities.
• Optimization of reading and writing large volumes of data.
• Support for incremental updates and data deletion.

Lakehouse is an architectural approach that combines the best properties of Data Warehouse and Data Lake. It allows storing structured and unstructured data in one place with analytical and machine learning capabilities.

Why Lakehouse is needed:

• Simplifies data infrastructure.
• Improves data quality and consistency.
• Supports diverse workloads (BI, ML, analytics).

Thus, Delta Lake, Iceberg, and Hudi are key technologies for implementing lakehouse, ensuring reliable and efficient large-scale data storage and processing.