Log-slave-updates causes MySQL to synchronize abnormally slowly from the node

1, from the library only to open the Log-bin function, do not add log-slave-updates parameters, the data from the library copied from the main library will not be written to the Log-bin log file.

2. When writing data directly from the library, it is written to the Log-bin log.

3. When the Log-slave-updates parameter is turned on, data copied from the library from the main library is written to the Log-bin log file. This is also the function of this parameter

Note: Adding Log-slave-updates=1 from the node configuration file, synchronization is unusually slow

Log-slave-updates causes MySQL to synchronize abnormally slowly from the node