Github user marmbrus commented on a diff in the pull request:
https://github.com/apache/spark/pull/1238#discussion_r14902100
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/LogicalPlan.scala
---
@@ -26,6 +26,28 @@ import org.apache.spark.sql.catalyst.trees
abstract class LogicalPlan extends QueryPlan[LogicalPlan] {
self: Product =>
+ // TODO: handle overflow?
+ /**
+ * Estimates of various statistics. The default estimation logic simply
sums up the corresponding
--- End diff --
This comment says `sum`, but the implementation below looks like `product`
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