Github user CodingCat commented on a diff in the pull request:
https://github.com/apache/spark/pull/19864#discussion_r157381589
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/columnar/InMemoryRelation.scala
---
@@ -71,9 +74,8 @@ case class InMemoryRelation(
override def computeStats(): Statistics = {
if (batchStats.value == 0L) {
- // Underlying columnar RDD hasn't been materialized, no useful
statistics information
- // available, return the default statistics.
--- End diff --
done
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