Error
Error Code:
4011
MySQL Error 4011: Replica Monitor Busy
Description
This error indicates that a `STOP REPLICA` command was issued, but the MySQL Replica Monitor thread is currently executing a task and cannot stop immediately. The replica will cease monitoring operations once its ongoing work is finished, leading to a delayed but eventual stop.
Error Message
STOP REPLICA command execution is incomplete: Replica Monitor thread got the stop signal, thread is busy, Monitor thread will stop once the current task is complete.
Known Causes
3 known causesActive I/O Operations
The Replica Monitor thread is currently engaged in reading relay logs, writing status updates, or other critical I/O tasks when the `STOP REPLICA` command is issued.
Internal Thread Task
The monitor thread is executing an internal, non-interruptible task or a complex processing loop that must complete before it can safely terminate.
High Replica Workload
The replica server is under significant load, which can delay the monitor thread's ability to process the stop signal and complete its current operations swiftly.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service