DrewMcArthur opened a new issue, #8231:
URL: https://github.com/apache/arrow-rs/issues/8231
**Describe the bug**
Attempting to create a `ParquetRecordBatchStreamBuilder`, reading from S3
panics with the following error: `there is no reactor running, must be called
from the context of a Tokio 1.x runtime`. The confusion for me is that the
code is running within a Tokio runtime, v1.47.
**To Reproduce**
```rust
#[tokio::main]
async fn main() {
let path = "path/to/key";
let s3_store: Arc<AmazonS3> = Arc::new(
AmazonS3Builder::from_env()
.with_bucket_name(BUCKET_NAME)
.build()?,
);
let path = Path::from(key);
let reader = ParquetObjectReader::new(s3_store, path);
let builder = ParquetRecordBatchStreamBuilder::new(reader).await?;
}
```
The code panics on the last line, and a backtrace leads me to [this
function](https://github.com/apache/arrow-rs/blob/1dacecba8e11cac307eea5d1a0f10c22d7f4a8b7/parquet/src/arrow/async_reader/store.rs#L197),
which has a comment above it referencing something about async/IO.
**Expected behavior**
I'd expect the code above to *just work*^tm - am I doing something wrong
here?
**Additional context**
There's a decent likelihood that I'm just misconfiguring something, but I
figured I'd post this here either way so that someone else (or me, in the
future) has the troubleshooting that will follow as a reference.
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