Compacting on-disk data
Kudu constantly performs several compaction tasks in order to maintain consistent read and write performance over time.
- A merging compaction, which combines multiple
DiskRowSetstogether into a single
DiskRowSet, is run by
- Kudu also runs two types of delta store compaction operations:
For more information on what these compaction operations do, see the Kudu Tablet design document.
The metrics associated with these tasks have the prefix