LantaoJin commented on a change in pull request #29062:
URL: https://github.com/apache/spark/pull/29062#discussion_r465523230
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/Analyzer.scala
##########
@@ -200,18 +200,18 @@ class Analyzer(
val postHocResolutionRules: Seq[Rule[LogicalPlan]] = Nil
lazy val batches: Seq[Batch] = Seq(
+ Batch("Substitution", fixedPoint,
Review comment:
I don't know which PR causes this regression problem since there is a
big gap between 2.4 and 3.0 about CTE. I am not familiar with this part.
I fixed this by debuging. In 3.0, I found only the `child of CTE` could
enter into the rule of `ResolveCoalesceHints`
For the above test case:
```
CTE [cte]
: +- 'SubqueryAlias `cte`
: +- 'UnresolvedHint REPARTITION, [3]
: +- 'Project [*]
: +- 'UnresolvedRelation `t`
+- 'Project [*]
+- 'UnresolvedRelation `cte`
```
Only this child `Project` branch could enter into the rule of
`ResolveCoalesceHints`
```
+- 'Project [*]
+- 'UnresolvedRelation `cte`
```
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