• Rpl_semi_sync_master_net_wait_time 

The total time in microseconds the source waited for replica replies. This variable is always 0 , and is deprecated; expect it to be removed in a future version. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_net_waits 

The total number of times the source waited for replica replies. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_no_times 

The number of times the source turned off semisynchronous replication. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_no_tx 

The number of commits that were not acknowledged successfully by a replica. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_status 

Whether semisynchronous replication currently is operational on the source. The value is ON  if the plugin has been enabled and a commit acknowledgment has occurred. It is OFF  if the plugin is not enabled or the source has fallen back to asynchronous replication due to commit acknowledgment timeout. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_timefunc_failures 

The number of times the source failed when calling time functions such as gettimeofday() . 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_tx_avg_wait_time 

The average time in microseconds the source waited for each transaction. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_tx_wait_time 

The total time in microseconds the source waited for transactions. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

• Rpl_semi_sync_master_tx_waits 

The total number of times the source waited for transactions. 

This variable is available only if the source-side semisynchronous replication plugin is installed. 

