Github user viirya commented on a diff in the pull request:
https://github.com/apache/spark/pull/20935#discussion_r178444026
--- Diff:
sql/core/src/main/scala/org/apache/spark/sql/execution/columnar/ColumnStats.scala
---
@@ -307,7 +308,7 @@ private[columnar] final class
DecimalColumnStats(precision: Int, scale: Int) ext
// TODO: this is not right for DecimalType with precision > 18
gatherValueStats(value)
} else {
- gatherNullStats
+ gatherNullStats()
--- End diff --
I don't think the change to `gatherNullStats` is necessary...
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