jorisvandenbossche opened a new issue, #38676:
URL: https://github.com/apache/arrow/issues/38676
### Describe the bug, including details regarding any error messages,
version, and platform.
With the following script:
```
from pyarrow import csv
from io import BytesIO
from concurrent.futures import ThreadPoolExecutor
data = "x,y,z"
def read_csv_pyarrow(i):
try:
csv.read_csv(BytesIO(data.encode()))
except:
pass
print(i)
return i
with ThreadPoolExecutor(4) as e:
list(e.map(read_csv_pyarrow, range(20)))
```
this occasionally hangs.
Reading the file itself gives the "ArrowInvalid: CSV parse error: Empty CSV
file or block: cannot infer number of columns" error:
https://github.com/apache/arrow/blob/db19a358cdf2b550b741fc7574dea38a6e32261b/cpp/src/arrow/csv/parser.cc#L545
We discovered this in the pandas test suite
(https://github.com/pandas-dev/pandas/pull/55687)
### Component(s)
C++
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