Description:
From the docs: http://dev.mysql.com/doc/refman/5.0/en/server-status-variables.html#option_mysqld_Slave_ru...
Slave_running
This is ON if this server is a slave that is connected to a master.
In real life, stopping the slave makes it go to OFF even though it's still connected to a master.
How to repeat:
slave2 [localhost] {msandbox} ((none)) > show status like '%running%';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| Slave_running | ON |
| Threads_running | 1 |
+-----------------+-------+
2 rows in set (0.00 sec)
slave2 [localhost] {msandbox} ((none)) > stop slave;
Query OK, 0 rows affected (0.00 sec)
slave2 [localhost] {msandbox} ((none)) > show status like '%running%';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| Slave_running | OFF |
| Threads_running | 1 |
+-----------------+-------+
slave2 [localhost] {msandbox} ((none)) > start slave io_thread;
Query OK, 0 rows affected (0.00 sec)
slave2 [localhost] {msandbox} ((none)) > show status like '%running%';
+-----------------+-------+
| Variable_name | Value |
+-----------------+-------+
| Slave_running | OFF |
| Threads_running | 1 |
+-----------------+-------+
Suggested fix:
It should probably say
This is ON if this server is a slave that is connected to a master, and both the SQL and I/O threads are running.
