Append-only workloads are a good candidate for Date Tiered or better Time Windowed compaction. Effectively depending on how you set it up, data in older SStables will eventually come to rest and never be compacted again.
On Fri, Apr 8, 2016 at 7:42 AM Robert Wille <rwi...@fold3.com> wrote: > You still need compaction. Compaction is what organizes your data into > levels. Without compaction, every query would have to look at every > SSTable. > > Also, due to commit log rotation, your memtable may get flushed from time > to time before it is full, resulting in small SSTables that would benefit > from compaction. > > On Apr 8, 2016, at 5:49 AM, Yatong Zhang <bluefl...@gmail.com> wrote: > > I am using leveled strategy. What if my data are 'append-only'? I mean > there are always new data but will be never changed once written to > cassandra? > > On Fri, Apr 8, 2016 at 6:33 PM, Pedro Gordo <pedro.gordo1...@gmail.com> > wrote: > >> Hi Yatong >> >> My understanding is that if you have a table whichi read-only and hence >> doesn't receive any writes, then no SSTables will be created, and hence, no >> compaction will happen. What compaction strategy do you have on your table? >> >> Best regards >> >> Pedro Gordo >> >> On 8 April 2016 at 10:42, Yatong Zhang <bluefl...@gmail.com> wrote: >> >>> Hi there, >>> I am wondering if it is possible to disable compaction when all my data >>> are read-only? >>> >> >> > >
