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jerry-024
marked this pull request as draft
September 16, 2026 09:01
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Purpose
DE scan planning converts global-index matches into row ranges, then calls
RowRangeIndex.create, which copies, sorts and merges those ranges again. For non-negative row IDs, the bitmap conversion already produces ordered, disjoint ranges. Reprocessing them adds allocations and traversal overhead, especially when an index query returns many fragmented ranges.Add
RowRangeIndex.fromBitmapand use it inDataEvolutionBatchScanto build the range index directly from the converted ranges. Mixed-sign bitmaps retain the existing signed sort-and-merge path because bitmap iteration uses unsigned order. The generalcreate(List<Range>)API keeps its existing behavior.Tests
Added an equivalence test covering empty and singleton bitmaps, sparse and contiguous ranges, 32-bit boundaries, mixed signs and long-value boundaries. It checks range queries against the existing construction path and verifies that subsequent bitmap mutations do not change the constructed index.
Local validation with JDK 11:
RowRangeIndexTest(2 tests) andRoaringNavigableMap64Test(8 tests).DataEvolutionBatchScanTest(6 tests) andDataEvolutionFileStoreScanTest#testIntersectsRowRanges(1 test).BtreeGlobalIndexTableTest#testBTreeGlobalIndexWithCoreScanfailed during index creation withNoSuchMethodError: ManifestAvroReader.<init>(SeekableInputStream). This end-to-end check remains unverified.