jonahgao commented on code in PR #21827:
URL: https://github.com/apache/datafusion/pull/21827#discussion_r3136910403
##########
datafusion/physical-plan/src/union.rs:
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@@ -612,13 +612,21 @@ impl ExecutionPlan for InterleaveExec {
self: Arc<Self>,
children: Vec<Arc<dyn ExecutionPlan>>,
) -> Result<Arc<dyn ExecutionPlan>> {
- // New children are no longer interleavable, which might be a bug of
optimization rewrite.
Review Comment:
As this comment says, I think another solution is to address it in the
optimizer.
This might be the root cause. Once identified, we can decide the best
option: either avoiding certain rewrites on InterleaveExec or falling back to
UnionExec.
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