Reasons for nodes not compacting?

Cassandra 2.1.2 with size-tiered compaction worked well during an initial test run when data was first written to the cluster, but during the second run when the initial data got overwritten we noticed that two nodes stopped compacting altogether and the number of SSTables grew dramatically. Wha

RE: Growing SSTable count as Cassandra does not saturate the disk I/O

SSTable count as Cassandra does not saturate the disk I/O Are you using compression on the sstables? If so, possibly you're CPU bound instead of disk bound. On Mon, Jan 12, 2015 at 3:47 AM, William Saar mailto:william.s...@king.com>> wrote: Hi, We are running a test with Cassandra 2.1.2 on

Growing SSTable count as Cassandra does not saturate the disk I/O

Hi, We are running a test with Cassandra 2.1.2 on Fusion I/O drives where we load about 2 billion rows of data during a few hours each night onto a 6-node cluster, but compactions that run 24/7 don't seem to be keeping up as the number of SSTables keep growing and our disks seem way underutilize