Weather splitter fix - #560
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Previously, all three splitters used an all-or-nothing approach: if any output file existed (via wildcard match), the entire input file was skipped. If even one output file was missing, the splitter re-split the whole input and overwrote all previously created children. Now each splitter checks existence per output file and only generates the missing ones: - GribSplitter: replaced the upfront should_skip() guard with a per-key should_skip_file() check inside the message loop, using a skipped_keys set to avoid redundant filesystem calls for the same output path. - GribSplitterV2: already checked per-file before running grib_copy, but the upload loop was copying every file grib_copy produced (including already-existing ones). Fixed by filtering the upload loop to only paths in output_paths. - NetCdfSplitter: removed the upfront should_skip() guard and moved the existence check into _write_dataset(), which now returns a bool so split_data() can track how many files were actually written. Added test_splits_only_missing_files for both GribSplitter/GribSplitterV2 (parametrized) and NetCdfSplitter: full split, delete one output file, re-split, assert only the deleted file was recreated and all others have unchanged modification times.
- Resolve file_splitters.py conflict: keep issue google#538 skip of already-split files while adopting upstream's recursive copy_dir upload. - Log each skipped (already-split) file across GribSplitter, GribSplitterV2, and NetCdfSplitter for pipeline telemetry. - Patch-bump VERSION.txt (0.2.2 -> 0.2.3) and weather_sp/setup.py (0.3.10 -> 0.3.11).
j9sh264
reviewed
Aug 24, 2026
| assert splitter.should_skip() | ||
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| def test_splits_only_missing_files(self, data_dir, grib_splitter): | ||
| input_path = f'{data_dir}/era5_sample.grib' |
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Let's create all the paths using the os.path module please.
j9sh264
reviewed
Aug 24, 2026
| num_files = 0 | ||
| for f in os.listdir(tmpdir): | ||
| dest_file_path = f'{prefix}{f.replace(delimiter, "/")}' | ||
| dest_file_path = os.path.join(prefix, *f.split(delimiter)) |
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nit: os.path.join(prefix, f.replace(delimiter, "/")) seems more readable
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