Speed up state_view::Iter
by special casing committed-with-no-deletes
#2003
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Description of Changes
Based on flamegraphs of
iter
, this speeds it up by avoiding checking the delete tables for every committed row if there isn't a delete table. Meanwhile, here, we also only fetch the delete table once instead of for every committed row.Fixes #2012.
API and ABI breaking changes
None
Expected complexity level and risk
1, localized and already well tested change.