Github user zhengruifeng commented on a diff in the pull request:
https://github.com/apache/spark/pull/16971#discussion_r106569149
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/QuantileSummariesSuite.scala
---
@@ -55,7 +55,7 @@ class QuantileSummariesSuite extends SparkFunSuite {
}
private def checkQuantile(quant: Double, data: Seq[Double], summary:
QuantileSummaries): Unit = {
- val approx = summary.query(quant)
+ val approx = summary.query(quant).get
--- End diff --
Ok, I will add a test on empty `data` here
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