WARN [main] 2021-11-21 10:41:13,832 DatabaseDescriptor.java:530 - Small cdc volume detected at /home/tjy/apache-cassandra-3.11.8/data/cdc_raw; setting cdc_total_space_in_mb to 1999. You can override this in cassandra.yaml
WARN [main] 2021-11-21 10:41:13,929 DatabaseDescriptor.java:579 - Only 48.669GiB free across all data volumes. Consider adding more capacity to your cluster or removing obsolete snapshots
WARN [main] 2021-11-21 10:41:14,084 NativeLibrary.java:189 - Unable to lock JVM memory (ENOMEM). This can result in part of the JVM being swapped out, especially with mmapped I/O enabled. Increase RLIMIT_MEMLOCK or run Cassandra as root.
WARN [main] 2021-11-21 10:41:14,084 StartupChecks.java:136 - jemalloc shared library could not be preloaded to speed up memory allocations
WARN [main] 2021-11-21 10:41:14,084 StartupChecks.java:169 - JMX is not enabled to receive remote connections. Please see cassandra-env.sh for more info
WARN [main] 2021-11-21 10:41:14,093 SigarLibrary.java:174 - Cassandra server running in degraded mode. Is swap disabled? : false, Address space adequate? : true, nofile limit adequate? : false, nproc limit adequate? : false
WARN [main] 2021-11-21 10:41:14,094 StartupChecks.java:311 - Maximum number of memory map areas per process (vm.max_map_count) 65530 is too low, recommended value: 1048575, you can change it with sysctl.
