SavedModelBundle Unable to Load Models with coo_sparse Encoded Input

Was trying to load a model using SavedModelBundle.load(savedModelPath, "serve") but ran into the operand "" does not exist on the graph issue. Error log:

Looking into Tensorflow Java source code this error is raised here.

And by inspecting the model being loaded the corresponding input tensor is coo_sparse encoded:

It appears to me that when building TensorDescription the library doesn't take coo_sparse encoded format into account: code link: it's trying to fetch the name field which is always empty for coo_sparse encoded format, because together with the name field it's oneof in TensorInfo proto: code link.

Is this a known unsupported feature or would the model loading just work if the validation is bypassed?

从 TensorFlow Java 的 TensorFunction.java 和 Signature.java 开始，然后将它们对 TensorInfo 的处理与 meta_graph.proto 中的 coo_sparse oneof 进行比较。复现所述 SavedModelBundle 的加载，并确定是否需要更改 validation 或模型加载；当已确定受支持的行为，并通过适当的 regression check 覆盖，或将其记录为不受支持时，即视为完成。