Github user srowen commented on a diff in the pull request: https://github.com/apache/spark/pull/19438#discussion_r143406835 --- 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 -- I still tend to think we need to fix this test case differently, as it has the same potential problem but the other way.
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