mingmwang commented on code in PR #2168:
URL: https://github.com/apache/arrow-datafusion/pull/2168#discussion_r844812467
##########
datafusion/core/src/physical_plan/mod.rs:
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@@ -258,6 +258,32 @@ pub trait ExecutionPlan: Debug + Send + Sync {
fn statistics(&self) -> Statistics;
}
+/// Returns a new plan where all children were replaced by new plans if the
provided children
+/// do not share the same point references with the existing children.
Review Comment:
Done.
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