fletcher32 checksum for hdf

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Nick Eubank

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Apr 9, 2017, 12:23:51 PM4/9/17

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Hello All,

I'm saving files with compression, and would like to make use of the fletcher32 checksum. It seems clear how to get a checksum computed when writing a file -- just pass `fletcher32=True` to `to_hdf()`.

Do I also need to do something when reading out a file to make sure the checksum is verified, or is it done automatically? I don't see anything about it in the `pd.read_hdf()` docs.

Thanks,

Nick

Francesc Alted

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Apr 10, 2017, 3:30:10 AM4/10/17

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Hi Nick,

Yes, once the fletcher32 checksum is stored in the file, the HDF5 library will always will verify it while reading in a transparent way.

Francesc

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