Aurora query timeout
This activity usually occurs due to status or other queries originating from network management software. The most common activity of this type are TCP and SNMP communications which send and receive data via the printer’s SGD interface and SNMP protocol. The printer’s inactivity time is controlled by its power.inactivity_timeout setting. In Aurora MySQL 1.23 or 2.09 and higher, the parallel query and hash join settings are both turned off by default. When you enable parallel query for such a cluster, enable hash joins also. The simplest way to do so is to set the cluster configuration parameter aurora_disable_hash_join=OFF .