wangyum opened a new pull request #31901:
URL: https://github.com/apache/spark/pull/31901
### What changes were proposed in this pull request?
Move `// Operator push down` to the back of `// Constant folding and
strength reduction`.
### Why are the changes needed?
Current order will push down useless condition from join condition. For
example:
```
spark.sql("SELECT * FROM t1 INNER JOIN t2 ON (a = b AND true)").explain
```
```
=== Applying Rule org.apache.spark.sql.catalyst.optimizer.PushDownPredicates
===
!Join Inner, ((a#4L = b#5L) AND true) Join Inner, (a#4L = b#5L)
!:- Relation default.t1[a#4L] parquet :- Filter true
!+- Relation default.t2[b#5L] parquet : +- Relation default.t1[a#4L]
parquet
! +- Relation default.t2[b#5L] parquet
```
### Does this PR introduce _any_ user-facing change?
No.
### How was this patch tested?
TODO
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