QuakeWang opened a new pull request, #8787:
URL: https://github.com/apache/paimon/pull/8787
### Purpose
`RoaringBitmap64.to_range_list` materialized every row ID into a temporary
Python list before building ranges. For large dense bitmaps, this caused memory
usage to grow with bitmap cardinality even when only one
range was produced.
Iterate over `BitMap64` directly and build ranges incrementally, removing
the O(cardinality) temporary allocation. Add focused tests for empty,
single-value, disjoint, and cross-32-bit-boundary bitmaps.
### Tests
- Python 3.11 Flake8
- License header check
- Roaring bitmap and global index tests
- Btree and bitmap global index build tests
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