Comments (6)
Seems to be happening because overrides_file.parquet
is empty.
Minimal repro:
import polars as pl
pl.LazyFrame(schema=["a", "b", "c"]).cast(pl.String).sink_parquet("empty.parquet")
pl.LazyFrame({"a": ["uno"]}).join(
pl.scan_parquet("empty.parquet"),
on="a"
).collect()
# shape: (0, 3)
# ┌─────┬─────┬─────┐
# │ a ┆ b ┆ c │
# │ --- ┆ --- ┆ --- │
# │ str ┆ str ┆ str │
# ╞═════╪═════╪═════╡
# └─────┴─────┴─────┘
pl.LazyFrame({"a": ["uno"]}).join(
pl.scan_parquet("empty.parquet"),
on="a"
).collect(streaming=True)
# PanicException: called `Option::unwrap()` on a `None` value
from polars.
Thank you for the issue report. Can you make a rminimal eproducable example?
Remove all code that doesn't influence and ideally reproduce from an in-memory table. If not, provide the code that generates the file. Currently a file is missing and I cannot reproduce.
from polars.
I'll work on putting an example together that will compile for you.
from polars.
parquet_files.tgz
I've attached an archive of the parquet files here as well if you want to try with those.
from polars.
Thanks @cmdlineluser!
from polars.
I would like to take on this please
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