NDB Cluster Configuration Files Command-Line Format --ndb-log-binlog-index[={OFF|ON}] System Variable ndb_log_binlog_index Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Boolean Default Value ON Default Value ( ≤  8.0.15-ndb-8.0.15) ON 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 • ndb_log_empty_epochs 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. 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 . 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 • ndb_log_empty_update 4183 Command-Line Format --ndb-log-empty-update[={OFF|ON}] System Variable ndb_log_empty_update Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Boolean Default Value OFF Command-Line Format --ndb-log-empty-epochs[={OFF|ON}] System Variable ndb_log_empty_epochs Scope Global Dynamic Yes SET_VAR  Hint Applies No Type Boolean Default Value OFF