read_files

Read a dataset from a set of files

Description

Read files into a dataset, optionally processing them in parallel.

Usage

read_files(
  files,
  reader,
  ...,
  parallel_files = 1,
  parallel_interleave = 1,
  num_shards = NULL,
  shard_index = NULL
)

Arguments

Argument Description
files List of filenames or glob pattern for files (e.g. “*.csv”)
reader Function that maps a file into a dataset (e.g. text_line_dataset() or tfrecord_dataset()).
Additional arguments to pass to reader function
parallel_files An integer, number of files to process in parallel
parallel_interleave An integer, number of consecutive records to produce from each file before cycling to another file.
num_shards An integer representing the number of shards operating in parallel.
shard_index An integer, representing the worker index. Shared indexes are 0 based so for e.g. 8 shards valid indexes would be 0-7.

Value

A dataset