Module compaction 

Segment compaction: merge segments, drop deleted rows, re-encode.

Compaction reads one or more source segments along with their delete bitmaps, filters out deleted rows, and writes a new compacted segment. The caller is responsible for the atomic metadata swap (WAL commit marker → swap segment references → delete old files).

Triggered when a segment’s delete ratio exceeds the threshold (default 20%) or when the segment count exceeds a limit.

Structs

CompactionResult

Result of a compaction operation.

Constants

DEFAULT_DELETE_RATIO_THRESHOLD

Default compaction threshold: compact when >20% of rows are deleted.

Functions

compact_segment

Compact a single segment by removing deleted rows.

compact_segments

Compact multiple segments into a single merged segment.