Does moving to Iceberg automatically improve query performance?
No performance result is guaranteed for a specific workload. Iceberg supplies table-management capabilities such as snapshots and schema evolution, while performance depends on file layout, engines, query patterns and maintenance.
Answered in
AWS’s Managed Hive-to-Iceberg Migration Still Needs a Cutover PlanS3 Tables can migrate eligible Glue-registered Parquet Hive tables to Iceberg. Teams still own compatibility checks and cutover.
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