Hi, When I run nodetool compactionstats I see the number of pending tasks keep going up steadily.
I tried to increase the compactionthroughput, by using nodetool setcompactionthroughput I even tried the extreme to set it to 0 to disable the throttling. I checked iostats and we have SSD for data, the disk util is less than 5% which means it's not I/O bound, CPU is also less than 10% We are using levelcompaction and in the process of migrating data. We have 4500 writes per second and very few reads. We have about 70G data now and will grow to 150G when the migration finishes. We only have one CF and right now the number of SSTable is around 15000, write latency is still under 0.1ms. Anything needs to be concerned? Or anything I can do to reduce the number of pending compaction? Thanks. -Wei
