Creates a dataset that emits the key-value pairs in one or more LMDB files.
tf.raw_ops.LMDBDataset( filenames, output_types, output_shapes, name=None ) The Lightning Memory-Mapped Database Manager, or LMDB, is an embedded binary key-value database. This dataset can read the contents of LMDB database files, the names of which generally have the .mdb suffix.
Each output element consists of a key-value pair represented as a pair of scalar string Tensors, where the first Tensor contains the key and the second Tensor contains the value.
LMDB uses different file formats on big- and little-endian machines. LMDBDataset can only read files in the format of the host machine.
Args | |
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filenames | A Tensor of type string. A scalar or a vector containing the name(s) of the binary file(s) to be read. |
output_types | A list of tf.DTypes that has length >= 1. |
output_shapes | A list of shapes (each a tf.TensorShape or list of ints) that has length >= 1. |
name | A name for the operation (optional). |
Returns | |
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A Tensor of type variant. |