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We reintroduced writing the metadata file in #864 to preserve the divisions of the data when writing and reading again. We turned this behavior off in the past, but without proper documentation of the reason.
I'm now running into issues with Dask workers dying when writing large datasets though, presumably because of the metadata file, as documented in these Dask issues:
write_metadata
inDataFrame.to_parquet
kills worker dask/dask#6600to_parquet
default towrite_metadata_file=False
dask/dask#8901Also, while I ran into issues with the preservation of divisions before, I can't reproduce this locally with a small example. Let's turn writing metadata off again and validate if we are still having issues with this.