Expand description
Per-segment delete bitmap for columnar UPDATE/DELETE.
Uses roaring bitmaps for space-efficient tracking of deleted row indices.
Each segment has at most one associated DeleteBitmap, stored alongside
the segment as {segment_id}.del.
The bitmap is serialized to bytes for persistence and deserialized on segment open. Scans consult the bitmap to skip deleted rows.
Structsยง
- Delete
Bitmap - Per-segment bitmap of deleted row indices.