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Posted to issues@spark.apache.org by "Alexander Belov (JIRA)" <ji...@apache.org> on 2018/08/10 00:32:00 UTC
[jira] [Created] (SPARK-25082) Documentation for Spark Function
expm1 is incomplete
Alexander Belov created SPARK-25082:
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Summary: Documentation for Spark Function expm1 is incomplete
Key: SPARK-25082
URL: https://issues.apache.org/jira/browse/SPARK-25082
Project: Spark
Issue Type: Documentation
Components: Spark Core
Affects Versions: 2.3.1, 2.0.0
Reporter: Alexander Belov
The documentation for the function expm1 that takes in a string
public static [Column|https://spark.apache.org/docs/2.3.1/api/java/org/apache/spark/sql/Column.html] expm1(String columnName) ([https://spark.apache.org/docs/2.3.1/api/java/org/apache/spark/sql/functions.html#expm1-java.lang.String-)]
States that it "Computes the exponential of the given column." without mentioning that it first subtracts 1 from the value.
The documentation for the function expm1 that takes in a column has the correct documentation:
https://spark.apache.org/docs/2.3.1/api/java/org/apache/spark/sql/functions.html#expm1-org.apache.spark.sql.Column-
"Computes the exponential of the given value minus one."
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