This short report brings to light some interesting commits to
scylla.git master from the last weeks. Commits in the
034f79cfb4..4950ce539 range are covered.
There were 56 non-merge commits from 10 authors in that period. Some notable commits:
In Time Window Compaction Strategy compactions, fully expired
sstables will be compacted
separately, since that can be done by just dropping them.
Scrub compaction, which re-sorts unsorted sstables, will now use
memtables as a sorting mechanism instead of generating many
Automatic I/O configuration during setup now supports AWS
Alternator, ScyllaDB's implementation of the DynamoDB API, now
supports the ADD
Usually a memtable is flushed into one sstable. In some cases,
however, it can be flushed into several sstables. We now adjust
the partition estimate for these sstables so the bloom
filters allocated by these sstables will not occupy too much
Size-tiered compaction strategy will prefer compactions with larger
fan-in in order to improve efficiency. Moreover, once a
compaction with large fan-in is started, compactions with lower
fan-in will be delayed in
order to improve overall write amplification.
See you in the next issue of last week in scylla.git master!