rdblue commented on a change in pull request #24768: [SPARK-27919][SQL] Add v2
session catalog
URL: https://github.com/apache/spark/pull/24768#discussion_r300533238
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/analysis/UpdateAttributeNullability.scala
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@@ -37,7 +37,7 @@ object UpdateAttributeNullability extends Rule[LogicalPlan] {
case p if !p.resolved => p
// Skip leaf node, as it has no child and no need to update nullability.
case p: LeafNode => p
- case p: LogicalPlan =>
+ case p: LogicalPlan if p.childrenResolved =>
Review comment:
@cloud-fan, feel free to look into that, but this case was matching with an
unresolved child that did not have expression IDs. I thought the best approach
was to require resolved children, but if you'd like to suggest a different
approach I can update here.
Otherwise, this solves the problem and it is clearly correct to only access
expression IDs when children are resolved.
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