srowen commented on a change in pull request #26029: [SPARK-29336][SQL] Fix the
implementation of QuantileSummaries.merge (guarantee that the relativeError
will be respected)
URL: https://github.com/apache/spark/pull/26029#discussion_r331746346
##########
File path:
sql/catalyst/src/test/scala/org/apache/spark/sql/catalyst/util/QuantileSummariesSuite.scala
##########
@@ -169,5 +170,22 @@ class QuantileSummariesSuite extends SparkFunSuite {
checkQuantile(0.1, data, s)
checkQuantile(0.001, data, s)
}
+
+ // length of data21 is 4 * length of data22
+ val data21 = data.zipWithIndex.filter(_._2 % 5 != 0).map(_._1).toSeq
Review comment:
Nah, disregard this then if .toSeq is necessary
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