What steps can I take to troubleshoot a MySQL import that gets stuck or hangs indefinitely?

If the import hangs, check the MySQL server logs for errors. Monitor server resource usage (CPU, memory, disk I/O) to identify bottlenecks. Try importing a smaller subset of the data to isolate the problem. Ensure there are no blocking queries or locks on the target tables. Consider increasing the `wait_timeout` and `interactive_timeout` variables.