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Fix issue #43 (empty files creation) and improve reading/writing speed #1

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merged 1 commit into from
Apr 29, 2024
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Fix issue #43 (empty files creation) and improve reading/writing speed #1

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15 changes: 11 additions & 4 deletions nemo_curator/utils/file_utils.py
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Original file line number Diff line number Diff line change
Expand Up @@ -182,8 +182,7 @@ def _save_jsonl(documents, output_path, start_index=0, max_index=10000, prefix=N
"""Worker function to write out the data to jsonl files"""

def _output_json(document):
myjson = json.dumps(document, ensure_ascii=False)
return myjson.encode("utf-8")
return document.strip().encode('utf-8')

def _name(start_index, npad, prefix, i):
tag = str(start_index + i).rjust(npad, "0")
Expand All @@ -195,11 +194,19 @@ def _name(start_index, npad, prefix, i):

output_glob_string = os.path.join(output_path, "*.jsonl")

documents.map(_output_json).to_textfiles(
output_files = documents.map(_output_json).to_textfiles(
output_glob_string,
name_function=name,
)

# Delete empty files generated due to empty partitions in the bag
for output_file in output_files:
try:
if os.path.getsize(output_file) == 0:
os.remove(output_file)
except Exception as exception:
print(f"An exception occurred when trying to delete {output_file}.\n{exception}", flush=True)


def reshard_jsonl(
input_dir, output_dir, output_file_size="100M", start_index=0, file_prefix=""
Expand All @@ -222,7 +229,7 @@ def reshard_jsonl(
input_files = list(get_all_files_paths_under(input_dir))

# Read in the dask bag
b = db.read_text(input_files, blocksize=blocksize).map(json.loads)
b = db.read_text(input_files, blocksize=blocksize)

# Prepare the output
output_dir = expand_outdir_and_mkdir(output_dir)
Expand Down