jonathanc-n commented on code in PR #16380:
URL: https://github.com/apache/datafusion/pull/16380#discussion_r2141169183
##########
datafusion/physical-plan/src/joins/hash_join.rs:
##########
@@ -1372,15 +1407,16 @@ pub fn equal_rows_arr(
// The results are then folded (combined) using the and function to get a
final equality result.
equal = iter
.map(|(left, right)| {
- let arr_left = take(left.as_ref(), indices_left, None)?;
+ let left_refs: Vec<&dyn Array> =
left.iter().map(Arc::as_ref).collect();
+ let arr_left = interleave(&left_refs, indices_left)?;
let arr_right = take(right.as_ref(), indices_right, None)?;
eq_dyn_null(arr_left.as_ref(), arr_right.as_ref(),
null_equals_null)
})
.try_fold(equal, |acc, equal2| and(&acc, &equal2?))?;
let filter_builder = FilterBuilder::new(&equal).optimize().build();
- let left_filtered = filter_builder.filter(indices_left)?;
+ let left_filtered = filter_builder.filter(indices_left)?; // annoying
Review Comment:
```let mut left_filtered = Vec::with_capacity(equal.len());
for (i, &pair) in indices_left.iter().enumerate() {
if equal.value(i) {
left_filtered.push(pair);
}
}
```
I currently did this for now, but it defeats the whole point of the mask
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