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UnoptimizedTableState -> OptimizedTableState
Asynchronously merge small change/delta files into optimized base storage format files using scheduled query-pattern and table layout statistics.
Problem it solves
Frequent streaming ingestion creates highly fragmented change files, deteriorating read query performance over time.
Consumes
Emits
The real projects this mechanism was found in. Attribution is the point — this is how the best teams actually do it.