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Causes updates to NDB  tables to be written to the binary log. The setting for this variable has no effect if binary logging is not already enabled on the server using log_bin . In NDB 8.0.16 and later, ndb_log_bin  defaults to 0 (FALSE). 

• ndb_log_binlog_index 

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Causes a mapping of epochs to positions in the binary log to be inserted into the ndb_binlog_index table. Setting this variable has no effect if binary logging is not already enabled for the server using log_bin . (In addition, ndb_log_bin  must not be disabled.) ndb_log_binlog_index  defaults to 1 ( ON ); normally, there is never any need to change this value in a production environment. 

• ndb_log_empty_epochs 

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When this variable is set to 0, epoch transactions with no changes are not written to the binary log, although a row is still written even for an empty epoch in ndb_binlog_index . 

• ndb_log_empty_update 

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When this variable is set to ON  ( 1 ), update transactions with no changes are written to the binary log, even when log_slave_updates  is enabled. 

• ndb_log_exclusive_reads 

