Docs4dev
Docs
tensorflow / 2.9 / raw_ops / snapshotdataset.html

tf.raw_ops.SnapshotDataset

Creates a dataset that will write to / read from a snapshot.

tf.raw_ops.SnapshotDataset(
    input_dataset,
    path,
    output_types,
    output_shapes,
    compression='',
    reader_path_prefix='',
    writer_path_prefix='',
    shard_size_bytes=10737418240,
    pending_snapshot_expiry_seconds=86400,
    num_reader_threads=1,
    reader_buffer_size=1,
    num_writer_threads=1,
    writer_buffer_size=1,
    shuffle_on_read=False,
    seed=0,
    seed2=0,
    mode='auto',
    snapshot_name='',
    name=None
)

This dataset attempts to determine whether a valid snapshot exists at the snapshot_path, and reads from the snapshot in lieu of using input_dataset. If not, it will run the preprocessing pipeline as usual, and write out a snapshot of the data processed for future use.

Args
input_dataset A Tensor of type variant. A variant tensor representing the input dataset.
path A Tensor of type string. The path we should write snapshots to / read snapshots from.
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.
compression An optional string. Defaults to "".
reader_path_prefix An optional string. Defaults to "".
writer_path_prefix An optional string. Defaults to "".
shard_size_bytes An optional int. Defaults to 10737418240.
pending_snapshot_expiry_seconds An optional int. Defaults to 86400.
num_reader_threads An optional int. Defaults to 1.
reader_buffer_size An optional int. Defaults to 1.
num_writer_threads An optional int. Defaults to 1.
writer_buffer_size An optional int. Defaults to 1.
shuffle_on_read An optional bool. Defaults to False.
seed An optional int. Defaults to 0.
seed2 An optional int. Defaults to 0.
mode An optional string. Defaults to "auto".
snapshot_name An optional string. Defaults to "".
name A name for the operation (optional).
Returns
A Tensor of type variant.

© 2022 The TensorFlow Authors. All rights reserved.
Licensed under the Creative Commons Attribution License 4.0.
Code samples licensed under the Apache 2.0 License.
https://www.tensorflow.org/versions/r2.9/api_docs/python/tf/raw_ops/SnapshotDataset