This issue resolved? Iam also facing the same issue(MySQL datasource Net write timeout behaviour) when reflection full update on MySQL 8.x db, when changing the net_write_timeout from mysql server side global varible it’s not coming, impact always happens when changing the varible at server side not at dremio advanced options.So if you have any troubleshoot procedure please let me know.
Thanks,
Ajay Babu Maguluri.