gRPC 2 UNKNOWN vs 14 UNAVAILABLE
Both gRPC 2 (UNKNOWN) and 14 (UNAVAILABLE) belong to the gRPC Status Codes category. 2 indicates that an unknown error occurred. This may be returned when a server raises an exception that doesn't map to any known gRPC status code. Meanwhile, 14 means that the service is currently unavailable. This is most likely a transient condition, which can be corrected by retrying with a backoff.
描述
An unknown error occurred. This may be returned when a server raises an exception that doesn't map to any known gRPC status code.
何时出现
The server threw an unhandled exception or returned an error that gRPC couldn't classify into a more specific status code.
如何修复
Check the server logs for the underlying exception. Wrap server-side errors with explicit gRPC status codes instead of letting them bubble up as UNKNOWN.
描述
The service is currently unavailable. This is most likely a transient condition, which can be corrected by retrying with a backoff.
何时出现
The server is overloaded, shutting down, or a network partition occurred. This is the most common code to retry on, as it's explicitly transient.
如何修复
Retry with exponential backoff. If persistent, check the server health, load balancer configuration, and network connectivity between client and server.
主要区别
gRPC 2: An unknown error occurred. This may be returned when a server raises an exception that doesn't map to any known gRPC status code.
gRPC 14: The service is currently unavailable. This is most likely a transient condition, which can be corrected by retrying with a backoff.
You encounter 2 when the server threw an unhandled exception or returned an error that gRPC couldn't classify into a more specific status code.
You encounter 14 when the server is overloaded, shutting down, or a network partition occurred. This is the most common code to retry on, as it's explicitly transient.
何时使用哪个
For 2 (UNKNOWN): Check the server logs for the underlying exception. Wrap server-side errors with explicit gRPC status codes instead of letting them bubble up as UNKNOWN. For 14 (UNAVAILABLE): Retry with exponential backoff. If persistent, check the server health, load balancer configuration, and network connectivity between client and server.