The cassandra utility

JVM_OPTS="$JVM_OPTS -D[PARAMETER]"

cassandra [PARAMETERS]

• Command line: $ bin/cassandra -Dcassandra.load_ring_state=false
• cassandra-env.sh: JVM_OPTS="$JVM_OPTS -Dcassandra.load_ring_state=false"

cassandra.auto_bootstrap=false

Sets auto_bootstrap to false on initial set-up of the cluster. The next time you start the cluster, you do not need to change the cassandra.yaml file on each node to revert to true.

cassandra.available_processors=number_of_processors

In a multi-instance deployment, each Cassandra instance independently assumes that all CPU processors are available to it. Use this setting to specify a smaller set of processors.

cassandra.boot_without_jna=true

Configures Cassandra to boot without JNA. If you do not set this parameter to true, and JNA does not initalize, Cassandra does not boot.

cassandra.config=directory

Sets the directory location of the cassandra.yaml file. The default location depends on the type of installation.

cassandra.expiration_date_overflow_policy=POLICY

Set the policy for TTL (time to live) timestamps that exceed the maximum value supported by the storage engine, 2038-01-19T03:14:06+00:00. The database storage engine can only encode TTL timestamps through January 19 2038 03:14:07 UTC due to the Year 2038 problem.

• REJECT: Reject requests that contain an expiration timestamp later than 2038-01-19T03:14:06+00:00.
• CAP: Allow requests and insert expiration timestamps later than 2038-01-19T03:14:06+00:00 as 2038-01-19T03:14:06+00:00.

Default: REJECT.

cassandra.ignore_dynamic_snitch_severity=true|false (Default: false)

Setting this property to true causes the dynamic snitch to ignore the severity indicator from gossip when scoring nodes. Severity is a numeric representation of a node based on compaction events occurring on it, which it broadcasts via gossip. This factors into the dynamic snitch's formula, unless overridden.

Future versions will default to true and this setting will be removed. See Failure detection and recoveryand Dynamic snitching in Cassandra: past, present, and future.

cassandra.initial_token=token

Use when Cassandra is not using virtual nodes (vnodes). Sets the initial partitioner token for a node the first time the node is started. (Default: disabled)

Note: Vnodes automatically select tokens.

cassandra.join_ring=true|false

When set to false, prevents the Cassandra node from joining a ring on startup. (Default: true) You can add the node to the ring afterwards using nodetool join and a JMX call.

cassandra.load_ring_state=true|false

When set to false, clears all gossip state for the node on restart. (Default: true)

cassandra.metricsReporterConfigFile=file

Enables pluggable metrics reporter. See Pluggable metrics reporting in Cassandra 2.0.2.

cassandra.native_transport_startup_delay_second=seconds

Delays the startup of native transport for the number of seconds. (Default: 0)

cassandra.native_transport_port=port

Sets the port on which the CQL native transport listens for clients. (Default: 9042)

cassandra.partitioner=partitioner

Sets the partitioner. (Default: org.apache.cassandra.dht.Murmur3Partitioner)

cassandra.replace_address=listen_address or broadcast_address of dead node

To replace a node that has died, restart a new node in its place specifying the listen_address or broadcast_address that the new node is assuming. The new node must be in the same state as before bootstrapping, without any data in its data directory.

Note: The broadcast_address defaults to the listen_address except when the ring is using the Ec2MultiRegionSnitch.

cassandra.replayList=table

Allows restoring specific tables from an archived commit log.

cassandra.ring_delay_ms=ms

Defines the amount of time a node waits to hear from other nodes before formally joining the ring. (Default: 30000ms)

cassandra.rpc_port=port

Sets the port for the Thrift RPC service, which is used for client connections. (Default: 9160).

cassandra.ssl_storage_port=port

Sets the SSL port for encrypted communication. (Default: 7001)

cassandra.start_native_transport=true | false

Enables or disables the native transport server. See start_native_transport in cassandra.yaml. (Default: true)

cassandra.start_rpc=true | false

Enables or disables the Thrift RPC server. (Default: true)

cassandra.storage_port=port

Sets the port for inter-node communication. (Default: 7000)

cassandra.triggers_dir=directory

Sets the default location for the triggers JARs.

The location of the triggers directory depends on the type of installation:

Cassandra package installations	/etc/cassandra/triggers
Cassandra tarball installations	install_location/conf/triggers

cassandra.write_survey=true

Enables a tool for testing new compaction and compression strategies to experiment with different strategies and benchmark write performance differences without affecting the production workload. See Testing compaction and compression.

consistent.rangemovement=true

Set to true, makes bootstrapping behavior effective.