We have commented out "concurrent_compactors" in our Cassandra 2.1.13 installation. We would like to review this setting, as some issues indicate that the default configuration may affect read/write performance. https://issues.apache.org/jira/browse/CASSANDRA-8787 https://issues.apache.org/jira/browse/CASSANDRA-7139 Where can we see the value set for concurrent_compactors in our setup? Is it possible to update this configuration without a restart? Best Regards, Julian.