phillipleblanc commented on code in PR #10259:
URL: https://github.com/apache/datafusion/pull/10259#discussion_r1584722484
##########
datafusion/core/src/physical_optimizer/enforce_distribution.rs:
##########
@@ -1192,7 +1192,11 @@ fn ensure_distribution(
.collect::<Result<Vec<_>>>()?;
let children_plans = children.iter().map(|c|
c.plan.clone()).collect::<Vec<_>>();
- plan = if plan.as_any().is::<UnionExec>() &&
can_interleave(children_plans.iter()) {
+
+ plan = if plan.as_any().is::<UnionExec>()
+ && !config.optimizer.prefer_existing_union
Review Comment:
Nope, I think this approach looks good! Thanks!
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