On Tue, May 1, 2012 at 10:00 PM, Oleg Proudnikov <olegp@cloudorange.com> wrote:
There is this note regarding major compaction in the tuning guide:

"once you run a major compaction, automatic minor compactions are no longer
triggered frequently forcing you to manually run major compactions on a routine
basis"

I think, this means that unless you run major compactions regularly, the number
of sstables will naturally grow leading to incremental degradation in read
performance for update workloads.

No, that's not true. Minor automatic compactions continue in the exact same way as before, and if you outgrow that single largest file your major compaction resulted in, you'll be in exactly the same state as if you had never done that major compaction at all.


/Henrik