Github user chenghao-intel commented on a diff in the pull request:
https://github.com/apache/spark/pull/13585#discussion_r66714698
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/patterns.scala
---
@@ -92,6 +92,36 @@ object PhysicalOperation extends PredicateHelper {
.map(Alias(_, a.name)(a.exprId, a.qualifier, isGenerated =
a.isGenerated)).getOrElse(a)
}
}
+
+ /**
+ * Drop the non-partition key expression in the disjunctions, to
optimize the partition pruning.
--- End diff --
Oh, OK, originally, I think the conjunction cases was handled in
`collectProjectsAndFilters` already, before being passed into this function,
and here, we only handle the `AND` in the disjunction. (You can see this in
HiveTableScans in HiveStrategies.scala)
Anyway, you convinced me. :)
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