> On Dec 7, 2024, at 7:08 PM, Mick Semb Wever <m...@apache.org> wrote: > > Chiming in with my two cents… > > >> When people have the luxury of working in environments where clusters are >> massively over provisioned, LCS as a default makes a lot of sense, because >> there's not much downside. The use cases where you'd actually fall behind >> in compaction are pretty slim, so the negative impact isn't felt. >> >> Most people aren't doing this. Putting LCS as the default significantly >> changes the performance profile of new clusters in a way that actively harms >> a portion of the community. > > > > Haddad's statement here resonates above everything else that's been said so > far. It is this particular audience that I'm thinking first about not > screwing over, everyone else is a step in front of them wrt knowing what > compaction is and making an informed decision into changing it.
“You have to over-provision (iops) to use LCS” isn’t that different from “you have to over-provision (space) to use LCS” (by perhaps 50%). Both of them are sub-optimal and you’re trading off either extra space or extra compute/ops.
