Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/17148#discussion_r104281194
--- Diff:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/plans/logical/statsEstimation/FilterEstimation.scala
---
@@ -249,17 +251,19 @@ case class FilterEstimation(plan: Filter,
catalystConf: CatalystConf) extends Lo
attr: Attribute,
literal: Literal,
update: Boolean): Option[Double] = {
+ if (!colStatsMap.contains(attr)) {
+ logDebug("[CBO] No statistics for " + attr)
+ return None
--- End diff --
If we don't have stats, there's no need to go through the logic below.
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