cassandra-env.sh bash script file can be used to pass additional
options to the Java virtual machine (JVM), such as maximum and minimum
heap size, rather than setting them in the environment. If the JVM
settings are static and do not need to be computed from the node
cassandra-jvm-options files should be used
instead. For example, commonly computed values are the heap sizes, using
the system values.
For example, add
JVM_OPTS="$JVM_OPTS -Dcassandra.load_ring_state=false" to the
cassandra_env.sh file and run the command-line
cassandra to start.
The option is set from the
cassandra-env.sh file, and is equivalent to
starting Cassandra with the command-line option
-D option specifies the start-up parameters in both the command
cassandra-env.sh file. The following options are available:
Facilitates setting auto_bootstrap to false on initial set-up of the
cluster. The next time you start the cluster, you do not need to change
cassandra.yaml file on each node to revert to true, the default
In a multi-instance deployment, multiple Cassandra instances will independently assume that all CPU processors are available to it. This setting allows you to specify a smaller set of processors.
If JNA fails to initialize, Cassandra fails to boot. Use this command to boot Cassandra without JNA.
The directory location of the
cassandra.yaml file. The default
location depends on the type of installation.
Setting this property to true causes the dynamic snitch to ignore the severity indicator from gossip when scoring nodes. Explore failure detection and recovery and dynamic snitching for more information.
Use when virtual nodes (vnodes) are not used. Sets the initial partitioner token for a node the first time the node is started. Note: Vnodes are highly recommended as they automatically select tokens.
Set to false to start Cassandra on a node but not have the node join the
cluster. You can use
nodetool join and a JMX call to join the ring
Set to false to clear all gossip state for the node on restart.
Enable pluggable metrics reporter. Explore pluggable metrics reporting for more information.
Set the partitioner.
Set the cache size for prepared statements.
cassandra.replace_address=<listen_address of dead node>|<broadcast_address of dead node>
To replace a node that has died, restart a new node in its place
broadcast_address that the new node
is assuming. The new node must not have any data in its data directory,
the same state as before bootstrapping. Note: The
defaults to the
listen_address except when using the
Defines the amount of time a node waits to hear from other nodes before formally joining the ring.
Set the port on which the CQL native transport listens for clients.
Set the port for the Thrift RPC service, which is used for client connections.
Enable or disable the native transport server. See
Set the default location for the trigger JARs.
For testing new compaction and compression strategies. It allows you to experiment with different strategies and benchmark write performance differences without affecting the production workload.