NDB Cluster Configuration Files • --ndb-default-column-format=[FIXED|DYNAMIC] • --ndb-deferred-constraints=[0|1] • --ndb-schema-dist-timeout=# Command-Line Format --ndb-default-column-format={FIXED| DYNAMIC} System Variable ndb_default_column_format Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Enumeration Default Value FIXED Valid Values FIXED DYNAMIC Sets the default  COLUMN_FORMAT  and  ROW_FORMAT  for new tables (see Section 13.1.20, “CREATE TABLE Statement” ). The default is  FIXED . Controls whether or not constraint checks on unique indexes are deferred until commit time, where such checks are supported.  0  is the default. This option is not normally needed for operation of NDB Cluster or NDB Cluster Replication, and is intended primarily for use in testing. Command-Line Format --ndb-schema-dist-timeout=# Introduced 8.0.17-ndb-8.0.17 System Variable ndb_schema_dist_timeout Scope Global Dynamic No SET_VAR  Hint Applies No Type Integer Default Value 120 Minimum Value 5 4165 Command-Line Format --ndb-deferred-constraints System Variable ndb_deferred_constraints Scope Global, Session Dynamic Yes SET_VAR  Hint Applies No Type Integer Default Value 0 Minimum Value 0 Maximum Value 1