Request Timed Out

Symptom

The prediction request times out, and the error {"error_code": "ModelArts.4205","error_msg":"Connection time out."} is reported.

Possible Causes

If a request times out, there is a high probability that the request is intercepted by API Gateway. Check the API Gateway and model.

Solution

1. Run the :curl -kv {Prediction address} command on the local host to check whether the API Gateway is reachable. If the request timed out, check the local firewall, proxy, and network configurations.
2. Check whether the model is started or the duration for the model to process a single request. Due to the limitation of API Gateway, the duration of a single prediction cannot exceed 40s. If the duration exceeds 40s, the system will return a timeout error by default.