Dandandan commented on code in PR #19975:
URL: https://github.com/apache/datafusion/pull/19975#discussion_r2724245655
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datafusion/physical-expr-common/src/binary_view_map.rs:
##########
@@ -267,24 +272,32 @@ where
};
observe_payload_fn(payload);
continue;
- };
+ }
+
+ // Extract length from the view (first 4 bytes of u128)
+ // This is used for potential future optimizations
+ let _len = (view_u128 & 0xFFFFFFFF) as u32;
- // get the value as bytes
- let value: &[u8] = value.as_ref();
+ // Get the input value - Arrow's value() method is already
optimized
+ // to handle inline strings efficiently
+ let input_value: &[u8] = values.value(i).as_ref();
Review Comment:
This part is slow for inlined bytes (u128) as it converts it back to `&[u8]`
.
We should avoid it if we know either
* all views are inlined (e.g. no buffer)
* this view is inlined (length < 12)
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