Hi David,
I'm not able to reset it. when i run the command:
POST _cluster/settings
{"persistent":{"logger.org.elasticsearch.cluster.routing.allocation.decider":null}}
it is giving me below error:
{"error":{"root_cause":[{"type":"action_request_validation_exception","reason":"Validation Failed: 1: no settings to update;"}],"type":"action_request_validation_exception","reason":"Validation Failed: 1: no settings to update;"},"status":400}