• ndb_conflict_role : Role for replica to play in conflict detection and resolution. Value is one of PRIMARY, SECONDARY, PASS, or NONE (default). Can be changed only when replication SQL thread is stopped. See documentation for further information. Added in NDB 8.0.23. 

• ndb_dbg_check_shares : Check for any lingering shares (debug builds only). Added in NDB 8.0.13. 

• ndb_metadata_check : Enable auto-detection of NDB metadata changes with respect to MySQL data dictionary; enabled by default. Added in NDB 8.0.16. 

• ndb_metadata_check_interval : Interval in seconds to perform check for NDB metadata changes with respect to MySQL data dictionary. Added in NDB 8.0.16. 

• ndb_metadata_sync : Triggers immediate synchronization of all changes between NDB dictionary and MySQL data dictionary; causes ndb_metadata_check and ndb_metadata_check_interval values to be ignored. Resets to false when synchronization is complete. Added in NDB 8.0.19. 

• ndb_schema_dist_lock_wait_timeout : Time during schema distribution to wait for lock before returning error. Added in NDB 8.0.18. 

• ndb_schema_dist_timeout : Time to wait before detecting timeout during schema distribution. Added in NDB 8.0.16. 

• ndb_schema_dist_upgrade_allowed : Allow schema distribution table upgrade when connecting to NDB. Added in NDB 8.0.17. 

## Options and Variables Deprecated in NDB 8.0 

• ndbinfo : Enable ndbinfo plugin, if supported. Added in NDB 8.0.13. 

The following system variables, status variables, and options have been deprecated in NDB 8.0. 

• Ndb_api_adaptive_send_deferred_count_slave : Number of adaptive send calls not actually sent by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_adaptive_send_forced_count_slave : Number of adaptive sends with forced-send set sent by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_adaptive_send_unforced_count_slave : Number of adaptive sends without forced- send sent by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_bytes_received_count_slave : Quantity of data (in bytes) received from data nodes by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_bytes_sent_count_slave : Qunatity of data (in bytes) sent to data nodes by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_pk_op_count_slave : Number of operations based on or using primary keys by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_pruned_scan_count_slave : Number of scans that have been pruned to one partition by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_range_scan_count_slave : Number of range scans that have been started by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_read_row_count_slave : Total number of rows that have been read by this replica. Deprecated in NDB 8.0.23. 

• Ndb_api_scan_batch_count_slave : Number of batches of rows received by this replica. Deprecated in NDB 8.0.23. 

