ERR: Raise ValueError when non-default index is given for orc format #51828
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mroeschke
reviewed
Mar 7, 2023
pandas/io/orc.py
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| # validate that we have only a default index | ||
| # raise on anything else as we don't serialize the index | ||
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| if not df.index.equals(RangeIndex.from_range(range(len(df)))): |
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Might be clearer to use pandas.core.indexes.api.default_index
Just confirming, they are dropped without a warning/exception from pyarrow? |
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Yes they are just gone when roundtripping |
mroeschke
reviewed
Mar 8, 2023
mroeschke
reviewed
Mar 8, 2023
Co-authored-by: Matthew Roeschke <[email protected]>
# Conflicts: # pandas/io/orc.py
mroeschke
approved these changes
Mar 14, 2023
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Thanks @phofl |
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doc/source/whatsnew/vX.X.X.rstfile if fixing a bug or adding a new feature.orc can't handle indexes right now (they are dropped), so we should raise like we did in feather