cloud-fan commented on code in PR #50921:
URL: https://github.com/apache/spark/pull/50921#discussion_r2097051187
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sql/core/src/main/scala/org/apache/spark/sql/execution/datasources/v2/V2ScanRelationPushDown.scala:
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@@ -98,6 +108,89 @@ object V2ScanRelationPushDown extends Rule[LogicalPlan]
with PredicateHelper {
filterCondition.map(Filter(_, sHolder)).getOrElse(sHolder)
}
+ def pushDownJoin(plan: LogicalPlan): LogicalPlan = plan.transformUp {
+ // Join can be attempted to be pushed down only if left and right side of
join are
+ // compatible (same data source, for example). Also, another requirement
is that if
+ // there are projections between Join and ScanBuilderHolder, these projec
+ case node @ Join(
+ PhysicalOperation(
Review Comment:
identation please
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