[jira] [Assigned] (SPARK-31306) rand() function documentation suggests an inclusive upper bound of 1.0

2020-04-13 Thread Bryan Cutler (Jira)


 [ 
https://issues.apache.org/jira/browse/SPARK-31306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Bryan Cutler reassigned SPARK-31306:


Assignee: Ben

> rand() function documentation suggests an inclusive upper bound of 1.0
> --
>
> Key: SPARK-31306
> URL: https://issues.apache.org/jira/browse/SPARK-31306
> Project: Spark
>  Issue Type: Documentation
>  Components: PySpark, R, Spark Core
>Affects Versions: 2.4.5, 3.0.0
>Reporter: Ben
>Assignee: Ben
>Priority: Major
>
>  The rand() function in PySpark, Spark, and R is documented as drawing from 
> U[0.0, 1.0]. This suggests an inclusive upper bound, and can be confusing 
> (i.e for a distribution written as `X ~ U(a, b)`, x can be a or b, so writing 
> `U[0.0, 1.0]` suggests the value returned could include 1.0). The function 
> itself uses Rand(), which is [documented |#L71] as having a result in the 
> range [0, 1).



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[jira] [Assigned] (SPARK-31306) rand() function documentation suggests an inclusive upper bound of 1.0

2020-04-10 Thread Bryan Cutler (Jira)


 [ 
https://issues.apache.org/jira/browse/SPARK-31306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Bryan Cutler reassigned SPARK-31306:


Assignee: Bryan Cutler

> rand() function documentation suggests an inclusive upper bound of 1.0
> --
>
> Key: SPARK-31306
> URL: https://issues.apache.org/jira/browse/SPARK-31306
> Project: Spark
>  Issue Type: Documentation
>  Components: PySpark, R, Spark Core
>Affects Versions: 2.4.5, 3.0.0
>Reporter: Ben
>Assignee: Bryan Cutler
>Priority: Major
>
>  The rand() function in PySpark, Spark, and R is documented as drawing from 
> U[0.0, 1.0]. This suggests an inclusive upper bound, and can be confusing 
> (i.e for a distribution written as `X ~ U(a, b)`, x can be a or b, so writing 
> `U[0.0, 1.0]` suggests the value returned could include 1.0). The function 
> itself uses Rand(), which is [documented |#L71] as having a result in the 
> range [0, 1).



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[jira] [Assigned] (SPARK-31306) rand() function documentation suggests an inclusive upper bound of 1.0

2020-04-10 Thread Bryan Cutler (Jira)


 [ 
https://issues.apache.org/jira/browse/SPARK-31306?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
 ]

Bryan Cutler reassigned SPARK-31306:


Assignee: (was: Bryan Cutler)

> rand() function documentation suggests an inclusive upper bound of 1.0
> --
>
> Key: SPARK-31306
> URL: https://issues.apache.org/jira/browse/SPARK-31306
> Project: Spark
>  Issue Type: Documentation
>  Components: PySpark, R, Spark Core
>Affects Versions: 2.4.5, 3.0.0
>Reporter: Ben
>Priority: Major
>
>  The rand() function in PySpark, Spark, and R is documented as drawing from 
> U[0.0, 1.0]. This suggests an inclusive upper bound, and can be confusing 
> (i.e for a distribution written as `X ~ U(a, b)`, x can be a or b, so writing 
> `U[0.0, 1.0]` suggests the value returned could include 1.0). The function 
> itself uses Rand(), which is [documented |#L71] as having a result in the 
> range [0, 1).



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