Schema Evolution in Table Formats

Modern table formats (Iceberg, Delta Lake, Hudi) handle schema evolution natively, eliminating many of the problems that older Hive/Parquet-based pipelines suffer from. Knowing how each format handles evolution is a differentiator in interviews at companies using lakehouse architectures. Table Format Comparison Iceberg uses column IDs (integers) instead of column names for field matching. This means renaming a column in Iceberg is a metadata-only operation that does not require rewriting any data files. This is Iceberg's key advantage over Delta and Hudi for schema evolution. Vocabulary That Signals Seniority