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Lakehouse Table Format — Understanding Apache Iceberg Through Its Metadata

Verify snapshots, schema and partition evolution, MERGE and maintenance in the metadata

중급 · Lessons 27 · Lab 9

Curriculum

Table formats and the metadata tree

Catalogs

Schema evolution and column IDs

Hidden partitioning and partition evolution

Time travel, rollback, tags and branches

Undo means moving a pointer, not copying files — time travel, rollback, tags and branches reading
Undo a region you deleted by mistake, and review the next day's data on a branch before publishing lab
Quiz: Time travel, rollback, tags and branches quiz

Concurrent writes and optimistic concurrency

MERGE and deletes — copy-on-write vs merge-on-read

Compaction, snapshot expiration and orphan cleanup

Many engines, one table

Reference docs