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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 

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Controls whether or not constraint checks are deferred, where these are supported. 0  is the default. 

This variable is not normally needed for operation of NDB Cluster or NDB Cluster Replication, and is intended primarily for use in testing. 

• ndb_distribution 

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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. 

• ndb_eventbuffer_free_percent 

