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?

TensorFlow Java の TensorFunction.java と Signature.java から始め、meta_graph.proto の coo_sparse oneof と、それらの TensorInfo の処理を比較します。説明されている SavedModelBundle の読み込みを再現し、検証またはモデルの読み込みを変更する必要があるかどうかを判断します。サポートされる動作が確立され、適切な回帰チェックでカバーされるか、サポート対象外として文書化されれば完了です。