rdettai commented on a change in pull request #8525:
URL: https://github.com/apache/arrow/pull/8525#discussion_r513246472
##########
File path: rust/parquet/src/util/io.rs
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@@ -243,6 +251,19 @@ mod tests {
assert_eq!(src.pos(), 4);
}
+ #[test]
+ fn test_io_slice_over_limit() {
Review comment:
When you slice a reader in a way that it exceeds the bounds of the
original reader, the slice reader should be clamped to the original reader.
This is what is tested here.
```
Original: ++++++++++++++++++++
Requested Slice: ----------------+++++++++++++
Resulting Slice: ----------------++++
```
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