Comments (3)
@max3-2 Thanks for the report. It's hard to say without seeing a traceback of the error you get, but I assume this is an issue in fastparquet: dask/fastparquet#919 (essentially, fastparquet is not yet fully compatible with the new CoW mode)
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The error is indeed "ValueError: assignment destination is read-only", so I am going to close this in favor of the issue on the fastparquet side (as this is something that needs to fixed there): dask/fastparquet#919
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Yeah my bad I skipped the traceback in favor of the repoducer. But yes, the error reported is the one I was referring to and since it only occurs with non-unique indexing I placed it here.
Thanks for referring to the other issue!
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