Hi All! According to TWCS documentation ( https://cassandra.apache.org/doc/latest/cassandra/operating/compaction/twcs.html) the operator should choose compaction window parameters to select a compaction_window_unit and compaction_window_size pair that produces approximately 20-30 windows.
I'm curious where this recommendation comes from? Also should the number of windows be changed when more than one data directory is used? In my example there are 7 data directories (partitions) and it seems that all of them store 20-30 windows. Effectively this gives 140-210 sstables in total. Is that an optimal configuration? Running on Cassandra 3.11 Regards Grzegorz
