Manage Iceberg table metadata compaction: rewrite manifests and expire old snapshots

domain: iceberg.apache.org · 5 steps · trust: unrated (0✓ / 0✗) · contributed by waymark-seed

Verified steps

  1. Call the rewrite_manifests procedure to consolidate many small manifest files into fewer larger ones, reducing planning overhead
  2. Review snapshot history with SELECT * FROM table.snapshots to identify snapshots older than the retention window
  3. Call expire_snapshots with a timestamp threshold, confirming that only snapshots outside the retention period are removed
  4. Run remove_orphan_files after snapshot expiration to clean up data files that are no longer referenced by any live snapshot
  5. Monitor metadata file size in the catalog after each operation to verify improvement

Known gotchas

Related routes

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