adriangb commented on code in PR #19599:
URL: https://github.com/apache/datafusion/pull/19599#discussion_r2673998727
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datafusion/common/src/stats.rs:
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@@ -321,6 +321,13 @@ impl Statistics {
}
}
+ /// Returns the memory size in bytes.
+ pub fn heap_size(&self) -> usize {
+ // column_statistics + num_rows + total_byte_size
+ self.column_statistics.capacity() * size_of::<ColumnStatistics>()
+ + size_of::<Precision<usize>>() * 2
Review Comment:
We need to be able to get the heap size of arrays to implement it for
`Statistics`? What's the chain of fields that takes us there?
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