This article introduces Delta Lake as an open‑source lakehouse storage framework, explains its core features, file and metadata structures, details Alibaba Cloud EMR's enhancements and deep integration with DLF, and presents G‑SCD and CDC solutions for real‑time incremental data warehousing.
This article introduces Delta Lake as an open‑source storage layer for lake‑house architectures, explains its key features, file and metadata structures, and details how Alibaba Cloud EMR and Data Lake Formation integrate and extend Delta Lake with advanced capabilities such as G‑SCD, CDC, performance optimizations, and future roadmap.
Delta Lake, an open‑source storage layer from Databricks, provides ACID transactions, data versioning, schema evolution, and unified batch‑stream processing, with a detailed file structure and metadata mechanism, while Alibaba Cloud EMR enhances it with advanced DML, performance optimizations, deep DLF integration, and solutions for G‑SCD and CDC.
This article explains the concept of Slowly Changing Dimensions (SCD), discusses practical design questions, compares three change‑tracking requirements, presents three implementation patterns, and provides detailed Hive/SQL examples for historical data initialization and incremental updates in large‑scale data warehouses.
