Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/19438#discussion_r143761026
--- Diff:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/QuantileSummariesSuite.scala
---
@@ -58,7 +58,7 @@ class QuantileSummariesSuite extends SparkFunSuite {
if (data.nonEmpty) {
val approx = summary.query(quant).get
// The rank of the approximation.
- val rank = data.count(_ < approx) // has to be <, not <= to be exact
+ val rank = data.count(_ <= approx)
--- End diff --
Yes I think rounding up the average can solve the problem.
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