Hm that question is like "My car does not start - whats the problem?".
You have to monitor, monitor, monitor, monitor. I'd strongly advice to
graph as many metrics as you can. Read them from the JMX interface and
write them to a TSDB, visualize them e.g. with Grafana.
Then read logs, trace your
Dear Cassandra Users,
I have some issues since few days with the following cluster:
- 5 nodes
- Cassandra 3.7
- 2 seed nodes
- 1 keyspace with RF=2, 300Go / nodes, WRITE_LEVEL=ONE, READ_LEVEL=ONE
- 1 enormous table (90% of the keyspace)
- TTL for each line insered
The cluster is write
