NDB Cluster Configuration Files System Variable ndb_default_column_format Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Enumeration Default Value FIXED Valid Values FIXED DYNAMIC 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 Command-Line Format --ndb-distribution={KEYHASH|LINHASH} System Variable ndb_distribution Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Enumeration Default Value KEYHASH Valid Values LINHASH KEYHASH • ndb_eventbuffer_free_percent • ndb_distribution Controls the default distribution method for  NDB  tables. Can be set to either of  KEYHASH  (key hashing) or LINHASH  (linear hashing).  KEYHASH  is the default. 4176 This variable is not normally needed for operation of NDB Cluster or NDB Cluster Replication, and is intended primarily for use in testing. Controls whether or not constraint checks are deferred, where these are supported.  0  is the default. Sets the default  COLUMN_FORMAT  and  ROW_FORMAT  for new tables (see Section 13.1.20, “CREATE TABLE Statement” ). The default is  FIXED . • ndb_deferred_constraints