yjshen edited a comment on pull request #1905:
URL:
https://github.com/apache/arrow-datafusion/pull/1905#issuecomment-1058149127
I think I may also need to ~~tune `chunk_reader` in parquet a little bit~~,
since it also imposes immutability:
```rust
impl ChunkReader for ObjectReaderWrapper {
type T = Self;
fn get_read(&self, start: u64, length: usize) -> ParquetResult<Self::T>
```
In order to change ChunkReader to `&mut self` to cut of Mutex, it seems I
need to change the full code path of parquet reading. Since they all share an
immutability interface.
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