What does schema evolution in Apache Iceberg allow you to do safely?
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Short Explanation and Infographic
Iceberg supports safe schema evolution — adding; dropping; renaming; or reordering columns — by tracking the schema in metadata rather than in the data files; so existing files are never rewritten.
Full explanation below image
Full Explanation
Iceberg supports safe schema evolution — adding; dropping; renaming; or reordering columns — by tracking the schema in metadata rather than in the data files; so existing files are never rewritten. The incorrect options ("Convert Iceberg tables back to raw Parquet files", "Automatically migrate data from Delta Lake to Iceberg", "Roll back to a previous partition strategy without data loss") are distractors that don't fully capture the concept described.