Dandandan commented on code in PR #2218:
URL: https://github.com/apache/arrow-datafusion/pull/2218#discussion_r848816216
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datafusion/physical-expr/src/physical_expr.rs:
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@@ -51,23 +47,15 @@ pub trait PhysicalExpr: Send + Sync + Display + Debug {
batch: &RecordBatch,
selection: &BooleanArray,
) -> Result<ColumnarValue> {
- if selection.iter().all(|b| b == Some(true)) {
+ let filter_count = selection
Review Comment:
I thought this as well, but the earlier fast path also avoided the `scatter`
path in case of all values being true.
The filter count can not easily be reused between this code and the `filter`
kernel.
I am also OK with removing this path, for making the code a bit simpler.
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