Fix heap size for Arc

mkleen · mkleen · commit f3a157fc1d9b · 2026-04-09T01:48:48.000+02:00
diff --git a/datafusion/common/src/heap_size.rs b/datafusion/common/src/heap_size.rs
@@ -230,7 +230,7 @@ impl<K: DFHeapSize, V: DFHeapSize> DFHeapSize for HashMap<K, V> {
 impl<T: DFHeapSize> DFHeapSize for Arc<T> {
     fn heap_size(&self) -> usize {
         // Arc stores weak and strong counts on the heap alongside an instance of T
-        2 * size_of::<usize>() + size_of::<T>() + self.as_ref().heap_size()
+        2 * size_of::<usize>() + self.as_ref().heap_size()
     }
 }
 

Original file line number	Diff line number	Diff line change
`@@ -230,7 +230,7 @@ impl<K: DFHeapSize, V: DFHeapSize> DFHeapSize for HashMap<K, V> {`
`230`	`230`	`impl<T: DFHeapSize> DFHeapSize for Arc<T> {`
`231`	`231`	`fn heap_size(&self) -> usize {`
`232`	`232`	`// Arc stores weak and strong counts on the heap alongside an instance of T`
`233`		`- 2 * size_of::<usize>() + size_of::<T>() + self.as_ref().heap_size()`
	`233`	`+ 2 * size_of::<usize>() + self.as_ref().heap_size()`
`234`	`234`	`}`
`235`	`235`	`}`
`236`	`236`