daniel-shields opened a new issue, #36385:
URL: https://github.com/apache/arrow/issues/36385
### Describe the bug, including details regarding any error messages,
version, and platform.
Parquet statistics appear to always return true for distinct value count
even when it is not set.
```
import os
import sys
import pyarrow as pa
import pyarrow.parquet as pq
print(f"{sys.version}")
print(f"{pa.__version__=}")
array = pa.array([0.0, 1.0], pa.float64()) # Two distinct values
table = pa.table([array], names="x")
path = os.path.expanduser("~/test.parquet")
pq.write_table(table, path)
with pq.ParquetFile(path) as file:
has_distinct_count =
file.metadata.row_group(0).column(0).statistics.has_distinct_count
distinct_count =
file.metadata.row_group(0).column(0).statistics.distinct_count
print(f"{has_distinct_count=}, {distinct_count=}")
```
output:
```
3.9.12 (main, Jan 1 2020, 00:00:00)
[GCC 8.3.0]
pa.__version__='12.0.0'
has_distinct_count=True, distinct_count=0
```
### Component(s)
Python
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