option

Synopsis

option(arg).set( value )

Graphs can be configured per graph using the following options. The Gremlin console must be used to set system commands.

Graph-Specific Options. Graph-specific options are preceded by `graph`. For example, `graph.replication_config`.
Option argument	Setting Example	Description	Default
replication_config (replaced by replication in DSE 5.0.3 and later)	{ 'class' : 'NetworkTopologyStrategy', 'dc1' : 3 }	Set replication configuration for a single graph.	{'class' : 'SimpleStrategy', 'replication_factor' : 1 }
system_replication_config (replaced by systemReplication in DSE 5.0.3 and later)	{ 'class' : 'NetworkTopologyStrategy', 'dc1' : 3 }	Set replication configuration for a single graph_system data.	{'class' : 'SimpleStrategy', 'replication_factor' : 1 }
default_property_key_cardinality	Multiple	The default cardinality for automatically defined properties	Single

Description

Configure a graph. Options can be set.

Examples

Create a new graph and set the graph replication configuration and the graph_system replication configuration to the Cassandra settings shown.

system.graph('food').
  option("graph.replication_config").set("{'class' : 'NetworkTopologyStrategy', 'dc1' : 3 }").
  option("graph.system_replication_config").set("{'class' : 'NetworkTopologyStrategy', 'dc1' : 3 }").
  ifNotExists().create()

The resulting list:

==>null

The replication settings can be verified using the cqlsh tool, running the CQL command

DESCRIBE keyspace
          food;

.

Note: The options shown (graph.replication_config and graph.system_replication_config) have been replaced in DSE 5.0.3 and later; see the table above.

Other schema settings can be set at graph creation, but must be changed using schema.config() if modified later.

system.graph('food2').
  option("graph.replication_config").set("{'class' : 'SimpleStrategy', 'replication_factor' : 1 }").
  option("graph.system_replication_config").set("{'class' : 'SimpleStrategy', 'replication_factor' : 1 }").
  option("graph.schema_mode").set("Development").
  option("graph.allow_scan").set("false").
  option("graph.default_property_key_cardinality").set("multiple").
  option("graph.tx_groups.*.write_consistency").set("ALL").
  create()

To check the schema settings:

:remote config alias g food2.g
schema.config().describe()

to get the results:

graph.schema_mode: Development
graph.allow_scan: False
graph.tx_groups.*.write_consistency: ALL
graph.default_property_key_cardinality: Multiple
gremlin> schema.config().option("graph.allow_scan").set("true")

Note the use of a wildcard * to set the write consistency for all transaction groups.