Mysql master not replicate data to slave (no replies)

Dear Team,

Recently, I faced an issue with mysql master-slave replication.

When I run command show slave status\G, it show Slave_IO_Running: Yes and Slave_SQL_Running: Yes.

However, when my check data in the table, I recognize that master not replicate data to slave. It miss some rows.

Please help t check.

I use mysql version 5.1.71-log on Red Hat Enterprise Linux Server release 6.5 (Santiago).

Regards,