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Error Code Explanation

TransferEngine may generate various types of errors during execution. For most APIs, the return value indicates the error reason. For details, refer to mooncake-transfer-engine/include/error.h.

Group	Return Value	Description
Normal	0	Normal execution
Error Args	ERR_INVALID_ARGUMENT	Input parameters are incorrect (and cannot be detailed into other items in this group)
	ERR_TOO_MANY_REQUESTS	The number of requests passed by the user when calling the `SubmitTransfer` interface exceeds the maximum value specified by the allocated `BatchID`
	ERR_ADDRESS_NOT_REGISTERED	The source address and/or target address in the request initiated by the user are not registered (including the situation where it has been registered locally but not uploaded to the metadata server)
	ERR_BATCH_BUSY	Reclaim a `BatchID` that is currently executing a request
	ERR_DEVICE_NOT_FOUND	No available RDMA device to execute the user's request
	ERR_ADDRESS_OVERLAPPED	Registering overlapping memory areas multiple times
Handshake	ERR_DNS	Local server name is not a valid DNS hostname or IP address, preventing other nodes from handshaking with this node
	ERR_SOCKET	Errors related to TCP Socket during the handshake process
	ERR_MALFORMED_JSON	Data format error during handshake exchange
	ERR_REJECT_HANDSHAKE	Peer rejects the handshake due to peer's errors
Other	ERR_METADATA	Failed to communicate with metadata server
	ERR_ENDPOINT	Exceptions during the creation and use of `RdmaEndPoint` objects
	ERR_NUMA	The system does not support numa interface
	ERR_CLOCK	The system does not support `clock_gettime` interface
	ERR_MEMORY	Out of memory