"
Quoting patch 3/4:
"This continues the work in a69d98c3d0,
by implementing the cleanup method in TWCS to make it bucket aware.
Till now, the default impl was used which cleanups on file at a
time, starting from the smallest.
The cleanup strategy for TWCS is simple. It's simply calling the
size tiered cleanup method for each bucket, so there will be
one job for each tier in each window.
The next strategies to receive this improvement are LCS and ICS
(the latter one being only available in enterprise).
Refs #10097."
** Simply put, the goal is to reduce writeamp when performing cleanup
on a TWCS table, therefore reducing the operation time. **
tests: unit(dev).
"
* 'twcs_cleanup_bucket_aware/v1' of https://github.com/raphaelsc/scylla:
tests: sstable_compaction_test: Add test for TWCS' bucket-aware cleanup
compaction: TWCS: Implement cleanup method for bucket awareness
compaction: TWCS: change get_buckets() signature to work with const qualified functions
compaction_strategy: get_cleanup_compaction_jobs: accept candidates by value
0c3d4091a4