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Patch md access in the rechunker #711

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merged 1 commit into from
Feb 17, 2023
Merged

Patch md access in the rechunker #711

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9 changes: 5 additions & 4 deletions strax/storage/file_rechunker.py
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Original file line number Diff line number Diff line change
Expand Up @@ -65,8 +65,8 @@ def rechunker(source_directory: str,
dest_directory, _temp_dir = _get_dest_and_tempdir(dest_directory, replace, backend_key)

backend = strax.FileSytemBackend(set_target_chunk_mb=target_size_mb)
meta_data = _get_meta_data(backend, source_directory, compressor, target_size_mb)
source_compressor = meta_data['compressor']
meta_data, source_compressor = _get_meta_data_and_compressor(
backend, source_directory, compressor, target_size_mb)
executor = _get_executor(parallel, max_workers)

data_loader = backend.loader(source_directory, executor=executor)
Expand Down Expand Up @@ -172,13 +172,14 @@ def _exhaust_generator(executor, saver, load_wrapper, data_loader, rechunk, _tim
executor.shutdown(wait=True)


def _get_meta_data(backend, source_directory, compressor, target_size_mb):
def _get_meta_data_and_compressor(backend, source_directory, compressor, target_size_mb):
meta_data = backend.get_metadata(source_directory)
old_compressor = meta_data['compressor']
if compressor is not None:
meta_data['compressor'] = compressor
if target_size_mb is not None:
meta_data['chunk_target_size_mb'] = target_size_mb
return meta_data
return meta_data, old_compressor


def _get_executor(parallel, max_workers):
Expand Down