We are new to Cassandra and have built a test cluster and loaded some data into the cluster.
We are seeing compaction behavior that seems to violate what we read about it's behavior. Our cluster is configured with JBOD with 3 3.6T disks. Those disks currently respectively have the following used/available space: Disk Used Available sdb1 1.8T 1.7T sdc1 1.8T 1.6T sdd1 1.5T 2.0T nodetool compactionstats -H reports that the compaction system is attempting to do a compaction that has a total of 6.83T The system hasn't had that much free space since sometime after we started loading data and there has never been that much free space on a single disk, so why would it ever attempt such a compaction? What have we done wrong, or am I reading this wrong? We have seen the same behavior on most of our 8 nodes. Can anyone tell us what is happening or what we have done wrong? Thanks
