berkaysynnada commented on code in PR #8817:
URL: https://github.com/apache/arrow-datafusion/pull/8817#discussion_r1467280368


##########
datafusion/core/src/physical_optimizer/enforce_sorting.rs:
##########
@@ -812,6 +634,50 @@ mod tests {
             let session_ctx = SessionContext::new_with_config(config);
             let state = session_ctx.state();
 
+            // This file has 4 rules that use tree node, apply these rules as 
in the
+            // EnforSorting::optimize implementation
+            // After these operations tree nodes should be in a consistent 
state.
+            // This code block makes sure that these rules doesn't violate 
tree node integrity.
+            {
+                let plan_requirements = 
PlanWithCorrespondingSort::new_default($PLAN.clone());
+                let adjusted = plan_requirements
+                    .transform_up(&ensure_sorting)
+                    .and_then(check_integrity)?;
+                // TODO: End state payloads will be checked here.

Review Comment:
   Adding payload checks to each test is time-consuming, and verifying the 
accuracy of the results necessitates a separate analysis. I suggest we track 
these tasks in a separate ticket as todo, so we don't delay this PR any further.



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