HyukjinKwon commented on a change in pull request #25646: [SPARK-27336][SQL]
Incorrect DataSet.summary() result
URL: https://github.com/apache/spark/pull/25646#discussion_r319817318
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File path:
sql/catalyst/src/main/scala/org/apache/spark/sql/catalyst/expressions/aggregate/ApproximatePercentile.scala
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@@ -51,7 +51,7 @@ import org.apache.spark.sql.types._
usage = """
_FUNC_(col, percentage [, accuracy]) - Returns the approximate percentile
value of numeric
column `col` at the given percentage. The value of percentage must be
between 0.0
- and 1.0. The `accuracy` parameter (default: 10000) is a positive numeric
literal which
+ and 1.0. The `accuracy` parameter (default: 100000) is a positive
numeric literal which
Review comment:
It's just an approximate to summarize the current Dataset. If you need more
accurate number, you can just manually call this function.
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