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Failed or interrupted downloads leaves corrupted template files. #53
Description
If a templateflow image download fails, the truncated file is non-zero and considered as fetched and returned in subsequent queries.
This occurred in a rare case where the truncated image silently propagated through Ants-based resampling and subsequent brain extraction, corrupting the whole pipeline.
nipreps/fmriprep#2192
It seems that it was using the default non-datalad download.
An option would be to checksum-validate each time the template is queried.
Reacted by Mathias Goncalves
Activity
oesteban commentedon Dec 10, 2020
Using the datalad backend this should not occur. I'm not sure it is worth the pain maintaining a MANIFEST file with MD5 sums. Perhaps we could reconsider making datalad the default since it is more stable now?
oesteban commentedon Mar 15, 2024
Opening with nibabel could be an easy tradeoff between today and a decent validation of checksums.