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What does show slave status mean in MySQL?
When the replica SQL thread receives an error, it reports the error first, then stops the SQL thread. This means that there is a small window of time during which SHOW SLAVE STATUS shows a nonzero value for Last_SQL_Errno even though Slave_SQL_Running still displays Yes .
Is there a problem with MySQL replication slave lag?
Here on the Percona MySQL Supportteam, we often see issues where a customer is complaining about replication delays – and many times the problem ends up being tied to MySQL replication slave lag.
What does slave _ Io _ running do in MySQL?
For this state, Slave_IO_Running is Connecting . MYSQL_SLAVE_RUN_CONNECT. The replica I/O thread is running, and is connected to a replication source. For this state, Slave_IO_Running is Yes . The value of the Slave_running system status variable corresponds with this value.
When is seconds behind Master null in MySQL?
(In older versions of MySQL, this field was NULL if the slave SQL thread or the slave I/O thread was not running or was not connected to the master.) If the I/O thread is running but the relay log is exhausted, Seconds_Behind_Master is set to 0.
Why is MySQL replication still showing ” waiting “?
In my case binary log position (through show master status) at master and Read_Master_Log_Pos (show slave status) at slave had a huge gap, i simply stopped the slave and start the slave. The difference decreased to nominal. Thanks for contributing an answer to Database Administrators Stack Exchange!
Why is my Slave lagging behind the Master?
I have a master/slave replication on my MySql DB. my slave DB was down for a few hours and is back up again (master was up all the time), when issuing show slave status I can see that the slave is X seconds behind the master. the problem is that the slave dont seem to catch up with the master, the X seconds behind master dont seem to drop…
Is there way to get only the result of slave _ Io _ running column?
I wanted to capture only status/result of Slave_IO_Running and Slave_SQL_Running column values, which I will be using to integrate into our application. Is there any way to get only the values of those fields instead of getting values of all fields of SHOW SLAVE STATUS. My OS is windows. I am using MySQL 5.0.24
Where to find global SQL slave skip counter?
See SET GLOBAL sql_slave_skip_counter Statement . The position in the current source binary log file to which the SQL thread has read and executed, marking the start of the next transaction or event to be processed.
What does issuing reset master or reset slave do?
Issuing RESET MASTER or RESET SLAVE resets the values shown in these columns. When the replica SQL thread receives an error, it reports the error first, then stops the SQL thread.