Liyixin95 opened a new issue, #5304:
URL: https://github.com/apache/arrow-rs/issues/5304
**Describe the bug**
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A clear and concise description of what the bug is.
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**To Reproduce**
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Steps to reproduce the behavior:
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first, create an empty parquet file using pandas
```python
import pandas as pd
df = pd.DataFrame().reset_index(drop=True)
df.to_parquet("./test.parquet")
```
then, read this parquet using rust:
```rust
let file = File::open("./test.parquet")?;
let reader = SerializedFileReader::new(file)?;
let iter = reader.get_row_iter(None)?;
for record in iter {
println!("{:?}", record);
}
```
and the program paniced:
```
thread 'main' panicked at
D:\env\rust\.cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\parquet-50.0.0\src\schema\types.rs:1088:78:
called `Option::unwrap()` on a `None` value
stack backtrace:
0: std::panicking::begin_panic_handler
at
/rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\std\src\panicking.rs:645
1: core::panicking::panic_fmt
at
/rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\panicking.rs:72
2: core::panicking::panic
at
/rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library\core\src\panicking.rs:127
3: enum2$<core::option::Option<parquet::format::Type>
>::unwrap<parquet::format::Type>
at
/rustc/82e1608dfa6e0b5569232559e3d385fea5a93112\library\core\src\option.rs:931
4: parquet::schema::types::from_thrift_helper
at
D:\env\rust\.cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\parquet-50.0.0\src\schema\types.rs:1088
5: parquet::schema::types::from_thrift
at
D:\env\rust\.cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\parquet-50.0.0\src\schema\types.rs:1035
6: parquet::file::footer::decode_metadata
at
D:\env\rust\.cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\parquet-50.0.0\src\file\footer.rs:74
7: parquet::file::footer::parse_metadata<std::fs::File>
at
D:\env\rust\.cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\parquet-50.0.0\src\file\footer.rs:65
8:
parquet::file::serialized_reader::SerializedFileReader<std::fs::File>::new<std::fs::File>
at
D:\env\rust\.cargo\registry\src\rsproxy.cn-8f6827c7555bfaf8\parquet-50.0.0\src\file\serialized_reader.rs:182
9: parquet_test::read_parquet_file<ref$<str$> >
at .\src\main.rs:9
10: parquet_test::main
at .\src\main.rs:29
11: core::ops::function::FnOnce::call_once<void (*)(),tuple$<> >
at
/rustc/82e1608dfa6e0b5569232559e3d385fea5a93112\library\core\src\ops\function.rs:250
12: core::hint::black_box
at
/rustc/82e1608dfa6e0b5569232559e3d385fea5a93112\library\core\src\hint.rs:286
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose
backtrace.
error: process didn't exit successfully: `target\debug\parquet_test.exe`
(exit code: 101)
```
**Expected behavior**
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**Additional context**
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Add any other context about the problem here.
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