Table 21.207 Type and value information for ndbcluster
| Property | Value | 
|---|---|
| Name | ndbcluster | 
| Command Line | Yes | 
| System Variable | No | 
| Status Variable | No | 
| Option File | Yes | 
| Scope | |
| Dynamic | No | 
| Type | |
| Default, Range | FALSE (Version: NDB 7.5-7.6) | 
| Notes | DESCRIPTION: Enable NDB Cluster (if this version of MySQL supports it) 
                                        Disabled by
                                         | 
                The NDBCLUSTER storage engine
                is necessary for using NDB Cluster. If a
                mysqld binary includes support for the
                NDBCLUSTER storage engine,
                the engine is disabled by default. Use the
                --ndbcluster option to
                enable it. Use --skip-ndbcluster to
                explicitly disable the engine.
            
                It is not necessary or desirable to use this option
                together with --initialize.
                Beginning with NDB 7.5.4, --ndbcluster is
                ignored (and the NDB storage engine is
                not enabled) if
                --initialize is also used. (Bug #81689,
                Bug #23518923)
            
                
                
                --ndb-allow-copying-alter-table=[ON|OFF]
            
Table 21.208 Type and value information for ndb-allow-copying-alter-table
| Property | Value | 
|---|---|
| Name | ndb-allow-copying-alter-table | 
| Command Line | Yes | 
| System Variable | Yes | 
| Status Variable | No | 
| Option File | Yes | 
| Scope | Both | 
| Dynamic | Yes | 
| Type | |
| Default, Range | ON (Version: NDB 7.5-7.6) | 
| Notes | DESCRIPTION: Set to OFF to keep ALTER TABLE from using copying operations on NDB tables | 
                Let ALTER TABLE and other
                DDL statements use copying operations on
                NDB tables. Set to
                OFF to keep this from happening; doing
                so may improve performance of critical applications.