(Cross posting discuss & developers, as broad API interest. Usually these notices just go todevelopers@, where you should definitely join if you are interested in reviewing design proposals.)
Summary
This proposal addresses the known limitations of the current tf.data batching API:
it provides a mechanism for padded batching of sparse tensors
it facilitates customization of batching logic (users can now express batching logic as a pure Python function)
it enables application of different batching logic on different components