Read a dataset from a set of files
Read files into a dataset, optionally processing them in parallel.
read_files(files, reader, ..., parallel_files = 1, parallel_interleave = 1,
num_shards = NULL, shard_index = NULL)
Arguments
files | List of filenames or glob pattern for files (e.g. "*.csv") |
reader | Function that maps a file into a dataset (e.g.
|
... | Additional arguments to pass to |
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