lszskye opened a new pull request, #364:
URL: https://github.com/apache/paimon-cpp/pull/364
### Purpose
Linked issue: #325
Add an internal `OptimizedRoaringBitmap64` implementation as the foundation
for
supporting Java-compatible 64-bit deletion vectors.
The new bitmap:
- Uses the high 32 bits of a position as an index into an array of 32-bit
Roaring
bitmaps.
- Stores the low 32 bits in the corresponding `RoaringBitmap32`.
- Supports adding individual positions and ranges, union, containment checks,
cardinality, iteration, and run-length optimization.
- Supports copy and move construction and assignment.
- Supports conversion from `RoaringBitmap32`.
- Reads and writes the little-endian portable format used by Java Paimon's
`OptimizedRoaringBitmap64`.
### Tests
src/paimon/common/utils/optimized_roaring_bitmap64_test.cpp
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