dilipbiswal commented on a change in pull request #24118: [SPARK-26736][SQL] if
filter condition `And` has non-determined sub function it does not do partition
prunning
URL: https://github.com/apache/spark/pull/24118#discussion_r267206675
##########
File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/planning/patterns.scala
##########
@@ -63,10 +63,27 @@ object PhysicalOperation extends PredicateHelper {
val substitutedFields =
fields.map(substitute(aliases)).asInstanceOf[Seq[NamedExpression]]
(Some(substitutedFields), filters, other,
collectAliases(substitutedFields))
- case Filter(condition, child) if condition.deterministic =>
- val (fields, filters, other, aliases) =
collectProjectsAndFilters(child)
- val substitutedCondition = substitute(aliases)(condition)
- (fields, filters ++ splitConjunctivePredicates(substitutedCondition),
other, aliases)
+ case filter: Filter if filter.condition.deterministic ||
filter.condition.isInstanceOf[And] =>
+ val condition = filter.condition
+ val determinedCondition = if (condition.deterministic) {
+ Some(condition)
+ } else {
+ val andCondition = condition.asInstanceOf[And]
+ if (andCondition.left.deterministic) {
Review comment:
Do we intend to handle only at the top level ? What happens when the
non-deterministic predicate is nested like :
```
where ((c1 = 10 and rand() < 1) and (c2 = 20))
```
in this case, in my understanding of the code, we will ignore (c1 = 10) for
pruning purposes ? cc @maropu
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