mingmwang commented on code in PR #5322:
URL: https://github.com/apache/arrow-datafusion/pull/5322#discussion_r1116448488
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datafusion/core/src/execution/context.rs:
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@@ -1528,6 +1528,9 @@ impl SessionState {
// repartitioning and local sorting steps to meet distribution and
ordering requirements.
// Therefore, it should run before EnforceDistribution and
EnforceSorting.
Arc::new(JoinSelection::new()),
+ // Enforce sort before PipelineFixer
Review Comment:
I think the comment for `PipelineFixer` need to be adjusted.
```rust
// If the query is processing infinite inputs, the PipelineFixer rule
applies the
// necessary transformations to make the query runnable (if it is not
already runnable).
// If the query can not be made runnable, the rule emits an error with a
diagnostic message.
// Since the transformations it applies may alter output partitioning
properties of operators
// (e.g. by swapping hash join sides), this rule runs before
EnforceDistribution.
```
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