tf.raw_ops.LMDBDataset
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 | |
|---|---|
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 | |
|---|---|
A Tensor of type variant. |
© 2020 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 3.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.3/api_docs/python/tf/raw_ops/LMDBDataset